Molding adsorbent and molding method and application thereof

Abstract

The invention discloses a forming adsorbent and a forming method and application thereof, and belongs to the technical field of adsorption materials. According to the forming process of the adsorbent, a thermoplastic polymer is used as a main acting substance for bonding, and on the basis, the addition amount of a second component is required to be 3-20wt%, so that the formed adsorbent can be ensured to have enough strength, and the effective adsorption capacity can be ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of adsorption materials, and more specifically, relates to a formed adsorbent, a forming method thereof and an application thereof. Background Art

[0002] Adsorption materials are also called absorbent materials. Such materials can make certain components adhere to the surface of their particles, turning liquid trace compound additives into solid compounds. They are materials that can effectively adsorb certain components from gases or liquids. Generally, such materials have a large specific surface area, suitable pore structure and surface structure; have a strong adsorption capacity for adsorbates; generally do not chemically react with adsorbates and media; and also require convenient manufacturing, easy regeneration, and excellent adsorption and mechanical properties. Adsorption materials are an indispensable product in modern industry and are widely used in the oil industry for oil production, oil refining, sewage and tank washing water generated during oil storage and transportation, cold lubricating fluids and rolling mill water in the machinery industry, electroplating sewage, and multiple industries such as grain and oil processing, leather, paper, textile, and food processing.

[0003] One of the typical uses of adsorption materials is that they are often processed and used as desiccants, which have a drying effect in moisture-proofing and mildew-proofing. Currently, desiccants are widely used for moisture-proofing of products such as food, medicine, agricultural products, furniture, integrated circuits, precision electronics, leather products, instruments, textiles, books and documents, cultural relics and paintings, containers, and auto parts, and can effectively prevent food, medicine, or goods from being damaged due to moisture and condensed water in packaging, warehouses, containers, cartons, wooden boxes, and wooden cases. In daily life, desiccants for removing water vapor by the adsorption method include silica gel, alumina gel, molecular sieve, activated carbon, bone char, or activated clay, etc., and common adsorbents for removing water vapor by the chemical absorption method include substances with a large chemical affinity for water vapor such as calcium chloride, quicklime, or phosphorus pentoxide.

[0004] Another typical use of the adsorbent material is as the inner core of a dryer filter, which is applied to the treatment of refrigerant fluid in a refrigeration system. A refrigeration system mainly consists of a refrigeration compressor, a dryer filter, valve components, a condenser, a fan, refrigeration oil, a refrigerant, etc. The refrigeration system is widely used in household and commercial air conditioners, food preservation, freezing, refrigeration, and also in industries such as automotive air conditioners and rail vehicle air conditioners. The refrigeration device in the refrigeration system is an independent closed system, and no impurities are allowed to enter the working medium circulating in the system. In particular, the entry of impurities from outside the system will cause the system to malfunction, reduce efficiency, increase energy consumption, and even lead to accidents in severe cases. Moisture is one of the most influential factors in the refrigeration system. The sources of water in the refrigeration system are numerous, such as in the refrigerant, in the refrigeration oil, in the air, etc. Since the moisture in the refrigerant freezes at low temperatures and causes capillary blockage, it will seriously affect the system, resulting in the inability to perform refrigeration. Moreover, when there is moisture in the system, weak acids will be produced, which will promote metal corrosion and seriously affect the lifespan and normal operation of the system, and even lead to serious accidents. For example, the "copper plating" phenomenon in a Freon refrigeration system is caused by "pure water". To ensure the normal operation of the system and avoid accidents, the common practice is to install a dryer filter in the refrigeration system. The function of the molecular sieve dryer filter is to absorb the moisture in the refrigeration system, block the impurities in the system so that they cannot pass through, and prevent ice blockage and dirt blockage in the refrigeration system pipeline. Therefore, the dryer filter is an essential component in the refrigeration system. The inner core of the dryer filter is generally of two types: bulk granular core and solid core. The bulk granular core is compacted by a spring, and the pressure generated during system operation will cause the adsorbent material particles to rub against each other and generate powdering. The basic principle of the solid core is to bond the adsorbent material into a shape through a special process, which limits the friction between particles, can effectively avoid the powdering risk caused by the traditional spring compression filling type, and at the same time has good adsorption capacity and can be effectively compatible with system components.

[0005] Molecular sieves are a type of adsorption material that is widely used at present. When the filter element formed with it as the main raw material is applied to the refrigeration system, it can achieve or ensure deep dehydration. The key lies in two aspects. On the one hand, the filter element has a sufficiently high effective adsorption capacity. A high effective adsorption capacity can reduce the usage amount of molecular sieves. On the other hand, it lies in the compatibility between the filter element and the refrigeration system. Specifically, in a closed refrigeration cycle system, it should be compatible with refrigerants, lubricating oils, and metals involved in the system (such as copper, iron, and aluminum). If it cannot be effectively compatible with them, it will cause corrosion of the metal components (copper, iron, aluminum) of the system, decomposition of lubricating oil, adsorption of refrigerants, and affect the energy efficiency ratio of the refrigeration system. Seriously, it will lead to defects such as the system being unable to operate. With the research revealing that chlorofluorocarbon refrigerants have a huge negative impact on the atmosphere, it has forced the refrigeration industry to replace the refrigerants (i.e., refrigeration working fluids). As a result, a new generation of "green" refrigerants has emerged (mainly HFCs substances, which are mainly composed of hydrogen, fluorine, and carbon elements and do not contain chlorine, such as R-32, R-410, R-407). At the same time, it has also triggered the problem of the compatibility of molecular sieves not only with new refrigerants. Practice has shown that the molecular sieve filter elements mainly using metal salts as binders currently used in China cannot form good system compatibility with refrigeration systems using new refrigerants, resulting in frequent system failures. Therefore, they are not suitable for drying new refrigerants. Based on this, there have been a series of studies on molecular sieves for refrigeration systems or their preparation processes, etc. For example, in the patent application document with the patent application number 200310108621.3, a new preparation process using A-type molecular sieve particles as raw materials and sodium aluminophosphate solution as an adhesive is disclosed, and finally a molecular sieve filter element with better compatibility only with the new generation refrigerant R-32 is prepared; another example is that in the patent application documents with the patent application numbers US08879448 or 200310108621.3, NaA-type molecular sieves treated with a potassium salt solution are both disclosed, so that K ions in the solution partially replace Na ions in the molecular sieve. This ion exchange result reduces the effective pore diameter of the molecular sieve to 3 Å to form 3A molecular sieves, and the drying filter prepared with the 3A molecular sieves is more suitable for application in refrigeration systems using R-134a as the refrigerant, but its compatibility with new generation refrigerants such as R-32 is still not ideal; in addition, for another example, in the patent application document with the patent application number US3536521, a process for manufacturing a new type of refrigeration desiccant by coating the surface of A-type molecular sieves with silicone (such as methyl silicone) is disclosed. The process specifically includes dissolving silicone oil in an appropriate solution (such as a methylene chloride solution of silicone resin), then adding desiccant particles to the solution, and then heating and evaporating the solution to deposit a single silicon on the surface of the molecular sieve to form a granular desiccant covered with silicon, and performing activation treatment at a certain temperature. The biggest problem with this process is the high cost input and energy consumption.

[0006] In addition, the various preparation processes or methods described above are more suitable for small-scale production or preparation activities for experimental research. If they are truly transformed and put into industrial production, the actual operability is too low and they do not have practical industrial value. Summary of the Invention

[0007] 1. Problems to be Solved

[0008] Aiming at the problem of at least one of the above-mentioned possible disadvantages in the process of forming molecular sieve-based adsorbents or forming filter cores mainly made of molecular sieves in the prior art, the present invention provides a preparation method for a formed adsorbent;

[0009] Furthermore, the preparation method for a formed adsorbent provided by the present invention can effectively solve the problem of poor operability in the forming process of molecular sieve-based adsorbents or filter cores prepared mainly from molecular sieves in the prior art;

[0010] At the same time, the present invention also provides a formed adsorbent and the application of the adsorbent.

[0011] 2. Technical Solutions

[0012] The technical solutions adopted by the present invention are as follows:

[0013] Based on the purpose of the present invention, a first aspect of the present invention provides a forming process for an adsorbent, and the process includes the steps of:

[0014] (a) Prepare a mixed raw material containing a first component and a second component;

[0015] The first component contains a molecular sieve;

[0016] The second component contains a thermoplastic polymer, and the thermoplastic polymer has a melting point temperature T 0 ;

[0017] Moreover, based on the total mass of the first component and the second component, the addition amount of the second component is 3-20 wt%;

[0018] (b) Heat and form the mixed raw material in a mold; wherein,

[0019] The heating temperature is T 1 , and the T 1 is close to or substantially close to the melting point temperature T 0 ;

[0020] The heating time does not exceed (i.e., ≤) 30 min.

[0021] It should be noted here that the "molecular sieve" described in the present invention can have a regular shape such as spherical, cylindrical, rectangular, etc., or an irregular shape. The maximum particle size of the molecular sieve can be 0.5 to 5 mm. In addition, the molecular sieves can be classified by model, such as 3A, 4A, 5A, 13X, etc., where:

[0022] The 3A molecular sieve (chemical formula: 2 / 3K 2 O·1 / 3Na 22 O·AI 2 O 3 ·2SiO 2 ·9 / 2H 2 O) is particularly suitable for use as the inner core of a drying filter in a refrigeration system for drying refrigerants, or for drying petroleum cracking gas, olefins, refinery gas, and oilfield gas, or for use as an industrial desiccant in industries such as chemical engineering, pharmaceuticals, and insulating glass.

[0023] The 4A molecular sieve (chemical formula: Na2O·Al2O3·2SiO2·9 / 2H2O) is particularly suitable for drying natural gas and various chemical gases and liquids, refrigerants, pharmaceuticals, electronic materials, and labile substances, purifying argon, and separating methane, ethane, and propane. For example, deep drying of gases and liquids such as air, natural gas, hydrocarbon paraffins, and refrigerants; or, production and purification of argon; or, static drying of electronic components and substances prone to moisture absorption and deterioration; or, as a dehydrating agent in paints, polyesters, dyes, and coatings.

[0024] The 5A molecular sieve (chemical formula: 3 / 4CaO·1 / 4Na2O·Al2O3·2SiO2·9 / 2H2O) is particularly suitable for drying natural gas, desulfurization, and removing carbon dioxide; or, separating nitrogen and oxygen, separating nitrogen and hydrogen, and producing oxygen, nitrogen, and hydrogen; or, dewaxing petroleum and separating normal paraffins from branched hydrocarbons and cycloalkanes.

[0025] The 13X molecular sieve (chemical formula: Na 2 O·Al 2 O 3 ·2.45SiO 2 ·6.0H 2 O) is particularly suitable for purifying the raw material gas of large and medium-sized air separation plants.

[0026] According to the forming process of the adsorbent according to any embodiment of the first aspect of the present invention, the heating temperature T 1 is taken as any value within any of the following ranges of values: T 0 ±15°C, T 0 ±14°C, T 0 ±13°C, T 0 ±12°C, T0 ±11°C, T 0 ±10°C, T 0 ±9°C, T 0 ±8°C, T 0 ±7°C, T 0 ±6°C, T 0 ±5°C, T 0 ±4°C, T 0 ±3°C, T 0 ±2°C, T 0 , (T 0 -5°C) to (T 0 +15°C), (T 0 -5°C) to (T 0 +13°C), (T 0 -5°C) to (T 0 +10°C).

[0027] Further preferably, the heating temperature T 1 is preferably successively: T 0 ±15°C, T 0 ±10°C, (T 0 -5) to (T 0 +15)°C, (T 0 -5) to (T 0 +10)°C, T 0 ±5°C, T 0 ±2°C, T 0 °C.

[0028] For the forming process of the adsorbent according to any embodiment of the first aspect of the present invention, the heating time is any value taken from any of the following numerical ranges: 10 - 30 min, 10 - 28 min, 10 - 25 min, 10 - 23 min, 10 - 20 min, 12 - 30 min, 12 - 28 min, 12 - 25 min, 12 - 23 min, 12 - 20 min, 15 - 30 min, 15 - 28 min, 15 - 25 min, 15 - 23 min, 15 - 20 min.

[0029] Further preferably, the heating time is preferably successively: 10 - 30 min, 15 - 30 min, 15 - 25 min, 15 - 20 min.

[0030] For the forming process of the adsorbent according to any embodiment of the first aspect of the present invention, when the type of the thermoplastic polymer includes two or more than two types, each type of polymer has its own melting point, and the highest melting point temperature is taken as T 0 , and at this time the heating temperature T 1Close to or substantially close to the melting point temperature T of the thermoplastic polymer 0 .

[0031] For example, if the thermoplastic polymer is composed of two components, namely polyvinyl alcohol (PVA) and polyvinylidene fluoride (PVDF), the heating temperature T 1 is based on the melting point temperature of polyvinyl alcohol (PVA) as T 0聚乙烯醇(PVA) , and at this time the heating temperature T 1 is close to or substantially close to the melting point temperature T of the thermoplastic polymer 0 ; at this time the heating temperature T 1 is any value taken from any of the following numerical ranges: T 0聚乙烯醇(PVA) ±15°C, T 0聚乙烯醇(PVA) ±10°C, T 0聚乙烯醇(PVA) ±5°C, T 0聚乙烯醇(PVA) ±2°C, T 0聚乙烯醇(PVA) .

[0032] According to the forming process of the adsorbent of any embodiment of the first aspect of the present invention, the thermoplastic polymer includes any one or two of polyvinyl alcohol (PVA) and polyvinylidene fluoride (PVDF).

[0033] According to the forming process of the adsorbent of any embodiment of the first aspect of the present invention, the second component contains polyvinylidene fluoride (PVDF), and at the same time, the second component contains or does not contain polyvinyl alcohol (PVA).

[0034] It is further explained on this basis that if the second component contains polyvinylidene fluoride (PVDF) and at the same time the second component contains polyvinyl alcohol (PVA), then calculated based on the total amount of the mass sum of polyvinylidene fluoride (PVDF) and polyvinyl alcohol (PVA), the dosages of polyvinyl alcohol (PVA) and polyvinylidene fluoride (PVDF) satisfy any one or several of the following conditions A) to D):

[0035] A) The amount of polyvinyl alcohol (PVA) does not exceed (i.e., ≤) the amount of polyvinylidene fluoride (PVDF);

[0036] B) The amount of polyvinylidene fluoride (PVDF) exceeds (i.e., >) the amount of polyvinyl alcohol (PVA);

[0037] C) The content of the polyvinylidene fluoride (PVDF) can be any value taken from any value within any of the following numerical ranges: 50 - 99.9 wt%, 50 - 99 wt%, 50 - 98 wt%, 50 - 97 wt%, 50 - 96 wt%, 50 - 95 wt%, 50 - 94 wt%, 50 - 93 wt%, 50 - 92 wt%, 50 - 91 wt%, 50 - 90 wt%, 50 - 89 wt%, 50 - 88 wt%, 50 - 87 wt%, 50 - 86 wt%, 50 - 85 wt%, 50 - 84 wt%, 50 - 83 wt%, 50 - 82 wt%, 50 - 81 wt%, 50 - 80 wt%, 55 - 99.9 wt%, 55 - 99 wt%, 55 - 98 wt%, 55 - 97 wt%, 55 - 96 wt%, 55 - 95 wt%, 55 - 94 wt%, 55 - 93 wt%, 55 - 92 wt%, 55 - 91 wt%, 55 - 90 wt%, 55 - 89 wt%, 55 - 88 wt%, 55 - 87 wt%, 55 - 86 wt%, 55 - 85 wt%, 55 - 84 wt%, 55 - 83 wt%, 55 - 82 wt%, 55 - 81 wt%, 55 - 80 wt%, 60 - 99.9 wt%, 60 - 99 wt%, 60 - 98 wt%, 60 - 97 wt%, 60 - 96 wt%, 60 - 95 wt%, 60 - 94 wt%, 60 - 93 wt%, 60 - 92 wt%, 60 - 91 wt%, 60 - 90 wt%, 60 - 89 wt%, 60 - 88 wt%, 60 - 87 wt%, 60 - 86 wt%, 60 - 85 wt%, 60 - 84 wt%, 60 - 83 wt%, 60 - 82 wt%, 60 - 81 wt%, 60 - 80 wt%, 65 - 99.9 wt%, 65 - 99 wt%, 65 - 98 wt%, 65 - 97 wt%, 65 - 96 wt%, 65 - 95 wt%, 65 - 94 wt%, 65 - 93 wt%, 65 - 92 wt%, 65 - 91 wt%, 65 - 90 wt%, 65 - 89 wt%, 65 - 88 wt%, 65 - 87 wt%, 65 - 86 wt%, 65 - 85 wt%, 65 - 84 wt%, 65 - 83 wt%, 65 - 82 wt%, 65 - 81 wt%, 65 - 80 wt%, 70 - 99.9 wt%, 70 - 99 wt%, 70 - 98 wt%, 70 - 97 wt%, 70 - 96 wt%, 70 - 95 wt%, 70 - 94 wt%, 70 - 93 wt%, 70 - 92 wt%, 70 - 91 wt%, 70 - 90 wt%, 70 - 89 wt%, 70 - 88 wt%, 70 - 87 wt%, 70 - 86 wt%, 70 - 85 wt%, 70 - 84 wt%, 70 - 83 wt%, 70 - 82 wt%, 70 - 81 wt%, 70 - 80 wt%, 75 - 99.9 wt%, 75 - 99 wt%, 75 - 98 wt%, 75 - 97 wt%, 75 - 96 wt%, 75 - 95 wt%, 75 - 94 wt%, 75 - 93 wt%, 75 - 92 wt%, 75 - 91 wt%, 75 - 90 wt%, 75 - 89 wt%, 75 - 88 wt%, 75 - 87 wt%, 75 - 86 wt%, 75 - 85 wt%, 75 - 84 wt%, 75 - 83 wt%, 75 - 82 wt%, 75 - 81 wt%, 75 - 80 wt%, 70 - 99.9 wt%, 70 - 99 wt%, 70 - 98 wt%, 70 - 97 wt%, 70 - 96 wt%, 70 - 95 wt%, 70 - 94 wt%, 70 - 93 wt%, 70 - 92 wt%, 70 - 91 wt%, 70 - 90 wt%, 70 - 89 wt%, 70 - 88 wt%, 70 - 87 wt%, 70 - 86 wt%, 70 - 85 wt%, 70 - 84 wt%, 70 - 83 wt%, 70 - 82 wt%, 70 - 81 wt%, 70 - 80 wt%, 80 - 99.9 wt%, 80 - 99 wt%, 80 - 98 wt%, 80 - 97 wt%, 80 - 96 wt%, 80 - 95 wt%, 80 - 94 wt%, 80 - 93 wt%, 80 - 92 wt%, 80 - 91 wt%, 80 - 90 wt%, 80 - 89 wt%, 80 - 88 wt%, 80 - 87 wt%, 80 - 86 wt%, 80 - 85 wt%, 80 - 84 wt%, 80 - 83 wt%, 80 - 82 wt%, 80 - 81 wt%.

[0038] D) The content of the polyvinylidene fluoride (PVDF) exceeds (i.e., >) 50 wt%, or exceeds (i.e., >) 55 wt%, or exceeds (i.e., >) 60 wt%, exceeds (i.e., >) 65 wt%, exceeds (i.e., >) 70 wt%, or exceeds (i.e., >) 75 wt%, or exceeds (i.e., >) 80 wt%, or exceeds (i.e., >) 85 wt%.

[0039] According to the forming process of the adsorbent of any embodiment of the first aspect of the present invention, the first component further contains alumina.

[0040] As the alumina described herein, the alumina commonly used in a catalyst or a desiccant is also referred to as "activated alumina". One of its main functions is the removal of "adsorbate acid". Based on this, the alumina can also be replaced with other substances having the same / similar functions.

[0041] Further described on this basis, if the first component contains alumina, then by weight, the molecular sieve is 30 - 100 parts by weight, and the alumina is 1 - 60 parts by weight.

[0042] Further, by weight parts,The weight parts of the molecular sieve are preferably any value taken from any set of numerical ranges within any of the following ranges: 30 to 100 parts by weight, 30 to 95 parts by weight, 30 to 90 parts by weight, 30 to 85 parts by weight, 30 to 80 parts by weight, 30 to 75 parts by weight, 30 to 70 parts by weight, 30 to 65 parts by weight, 30 to 60 parts by weight, 30 to 55 parts by weight, 30 to 50 parts by weight, 30 to 45 parts by weight, 30 to 40 parts by weight, 30 to 35 parts by weight, 35 to 100 parts by weight, 35 to 95 parts by weight, 35 to 90 parts by weight, 35 to 85 parts by weight, 35 to 80 parts by weight, 35 to 75 parts by weight, 35 to 70 parts by weight, 35 to 65 parts by weight, 35 to 60 parts by weight, 35 to 55 parts by weight, 35 to 50 parts by weight, 35 to 45 parts by weight, 35 to 40 parts by weight, 40 to 100 parts by weight, 40 to 95 parts by weight, 40 to 90 parts by weight, 40 to 85 parts by weight, 40 to 80 parts by weight, 40 to 75 parts by weight, 40 to 70 parts by weight, 40 to 65 parts by weight, 40 to 60 parts by weight, 40 to 55 parts by weight, 40 to 50 parts by weight, 40 to 45 parts by weight, 45 to 100 parts by weight, 45 to 95 parts by weight, 45 to 90 parts by weight, 45 to 85 parts by weight, 45 to 80 parts by weight, 45 to 75 parts by weight, 45 to 70 parts by weight, 45 to 65 parts by weight, 45 to 60 parts by weight, 45 to 55 parts by weight, 45 to 50 parts by weight, 50 to 100 parts by weight, 50 to 95 parts by weight, 50 to 90 parts by weight, 50 to 85 parts by weight, 50 to 80 parts by weight, 50 to 75 parts by weight, 50 to 70 parts by weight, 50 to 65 parts by weight, 50 to 60 parts by weight, 50 to 55 parts by weight, 55 to 100 parts by weight, 55 to 95 parts by weight, 55 to 90 parts by weight, 55 to 85 parts by weight, 55 to 80 parts by weight, 55 to 75 parts by weight, 55 to 70 parts by weight, 55 to 65 parts by weight, 55 to 60 parts by weight, 60 to 100 parts by weight, 60 to 95 parts by weight, 60 to 90 parts by weight, 60 to 85 parts by weight, 60 to 80 parts by weight, 60 to 75 parts by weight, 60 to 70 parts by weight, 60 to 65 parts by weight, 65 to 100 parts by weight, 65 to 95 parts by weight, 65 to 90 parts by weight, 65 to 85 parts by weight, 65 to 80 parts by weight, 65 to 75 parts by weight, 65 to 70 parts by weight, 70 to 100 parts by weight, 70 to 95 parts by weight, 70 to 90 parts by weight, 70 to 85 parts by weight, 70 to 80 parts by weight, 70 to 75 parts by weight, 75 to 100 parts by weight, 75 to 95 parts by weight, 75 to 90 parts by weight, 75 to 85 parts by weight, 75 to 80 parts by weight, 80 to 100 parts by weight, 80 to 95 parts by weight, 80 to 90 parts by weight, 80 to 85 parts by weight, 85 to 100 parts by weight, 85 to 95 parts by weight, 85 to 90 parts by weight, 90 to 100 parts by weight, 90 to 95 parts by weight, 95 to 100 parts by weight.,

[0043] Further, in parts by weight, the weight parts of the alumina are preferably any value taken from any of the following ranges: 1 to 60 parts by weight, 1 to 55 parts by weight, 1 to 50 parts by weight, 1 to 45 parts by weight, 1 to 40 parts by weight, 1 to 35 parts by weight, 1 to 30 parts by weight, 1 to 25 parts by weight, 1 to 20 parts by weight, 1 to 15 parts by weight, 1 to 10 parts by weight, 1 to 5 parts by weight, 5 to 60 parts by weight, 5 to 55 parts by weight, 5 to 50 parts by weight, 5 to 45 parts by weight, 5 to 40 parts by weight, 5 to 35 parts by weight, 5 to 30 parts by weight, 5 to 25 parts by weight, 5 to 20 parts by weight, 5 to 15 parts by weight, 5 to 10 parts by weight, 10 to 60 parts by weight, 10 to 55 parts by weight, 10 to 50 parts by weight, 10 to 45 parts by weight, 10 to 40 parts by weight, 10 to 35 parts by weight, 10 to 30 parts by weight, 10 to 25 parts by weight, 10 to 20 parts by weight, 10 to 15 parts by weight, 15 to 60 parts by weight, 15 to 55 parts by weight, 15 to 50 parts by weight, 15 to 45 parts by weight, 15 to 40 parts by weight, 15 to 35 parts by weight, 15 to 30 parts by weight, 15 to 25 parts by weight, 15 to 20 parts by weight, 20 to 60 parts by weight, 20 to 55 parts by weight, 20 to 50 parts by weight, 20 to 45 parts by weight, 20 to 40 parts by weight, 20 to 35 parts by weight, 20 to 30 parts by weight, 20 to 25 parts by weight, 25 to 60 parts by weight, 25 to 55 parts by weight, 25 to 50 parts by weight, 25 to 45 parts by weight, 25 to 40 parts by weight, 25 to 35 parts by weight, 25 to 30 parts by weight, 30 to 60 parts by weight, 30 to 55 parts by weight, 30 to 50 parts by weight, 30 to 45 parts by weight, 30 to 40 parts by weight, 30 to 35 parts by weight, 35 to 60 parts by weight, 35 to 55 parts by weight, 35 to 50 parts by weight, 35 to 45 parts by weight, 35 to 40 parts by weight, 40 to 60 parts by weight, 40 to 55 parts by weight, 40 to 50 parts by weight, 40 to 45 parts by weight, 45 to 60 parts by weight, 45 to 55 parts by weight, 45 to 50 parts by weight, 50 to 60 parts by weight, 50 to 55 parts by weight, 55 to 60 parts by weight.

[0044] For the forming process of the adsorbent according to any embodiment of the first aspect of the present invention, the first component further contains activated carbon.

[0045] As the activated carbon described herein, one of its main functions is "odor removal". Based on this, the activated carbon can also be replaced with other substances having the same / similar functions.

[0046] On this basis, it is further illustrated that if the first component contains activated carbon, then in parts by weight, the molecular sieve is 30 to 100 parts by weight, and the activated carbon is 1 to 30 parts by weight.

[0047] Further, by weight parts,The weight parts of the molecular sieve are preferably any value taken from any one of the following value ranges: 30 to 100 parts by weight, 30 to 95 parts by weight, 30 to 90 parts by weight, 30 to 85 parts by weight, 30 to 80 parts by weight, 30 to 75 parts by weight, 30 to 70 parts by weight, 30 to 65 parts by weight, 30 to 60 parts by weight, 30 to 55 parts by weight, 30 to 50 parts by weight, 30 to 45 parts by weight, 30 to 40 parts by weight, 30 to 35 parts by weight, 35 to 100 parts by weight, 35 to 95 parts by weight, 35 to 90 parts by weight, 35 to 85 parts by weight, 35 to 80 parts by weight, 35 to 75 parts by weight, 35 to 70 parts by weight, 35 to 65 parts by weight, 35 to 60 parts by weight, 35 to 55 parts by weight, 35 to 50 parts by weight, 35 to 45 parts by weight, 35 to 40 parts by weight, 40 to 100 parts by weight, 40 to 95 parts by weight, 40 to 90 parts by weight, 40 to 85 parts by weight, 40 to 80 parts by weight, 40 to 75 parts by weight, 40 to 70 parts by weight, 40 to 65 parts by weight, 40 to 60 parts by weight, 40 to 55 parts by weight, 40 to 50 parts by weight, 40 to 45 parts by weight, 45 to 100 parts by weight, 45 to 95 parts by weight, 45 to 90 parts by weight, 45 to 85 parts by weight, 45 to 80 parts by weight, 45 to 75 parts by weight, 45 to 70 parts by weight, 45 to 65 parts by weight, 45 to 60 parts by weight, 45 to 55 parts by weight, 45 to 50 parts by weight, 50 to 100 parts by weight, 50 to 95 parts by weight, 50 to 90 parts by weight, 50 to 85 parts by weight, 50 to 80 parts by weight, 50 to 75 parts by weight, 50 to 70 parts by weight, 50 to 65 parts by weight, 50 to 60 parts by weight, 50 to 55 parts by weight, 55 to 100 parts by weight, 55 to 95 parts by weight, 55 to 90 parts by weight, 55 to 85 parts by weight, 55 to 80 parts by weight, 55 to 75 parts by weight, 55 to 70 parts by weight, 55 to 65 parts by weight, 55 to 60 parts by weight, 60 to 100 parts by weight, 60 to 95 parts by weight, 60 to 90 parts by weight, 60 to 85 parts by weight, 60 to 80 parts by weight, 60 to 75 parts by weight, 60 to 70 parts by weight, 60 to 65 parts by weight, 65 to 100 parts by weight, 65 to 95 parts by weight, 65 to 90 parts by weight, 65 to 85 parts by weight, 65 to 80 parts by weight, 65 to 75 parts by weight, 65 to 70 parts by weight, 70 to 100 parts by weight, 70 to 95 parts by weight, 70 to 90 parts by weight, 70 to 85 parts by weight, 70 to 80 parts by weight, 70 to 75 parts by weight, 75 to 100 parts by weight, 75 to 95 parts by weight, 75 to 90 parts by weight, 75 to 85 parts by weight, 75 to 80 parts by weight, 80 to 100 parts by weight, 80 to 95 parts by weight, 80 to 90 parts by weight, 80 to 85 parts by weight, 85 to 100 parts by weight, 85 to 95 parts by weight, 85 to 90 parts by weight, 90 to 100 parts by weight, 90 to 95 parts by weight, 95 to 100 parts by weight.,

[0048] Further, in parts by weight, the weight part of the activated carbon is preferably any value taken from any one of the following value ranges: 1 to 30 parts by weight, 1 to 25 parts by weight, 1 to 20 parts by weight, 1 to 15 parts by weight, 1 to 10 parts by weight, 1 to 5 parts by weight, 5 to 30 parts by weight, 5 to 25 parts by weight, 5 to 20 parts by weight, 5 to 15 parts by weight, 5 to 10 parts by weight, 10 to 30 parts by weight, 10 to 25 parts by weight, 10 to 20 parts by weight, 10 to 15 parts by weight, 15 to 30 parts by weight, 15 to 25 parts by weight, 15 to 20 parts by weight, 20 to 30 parts by weight, 20 to 25 parts by weight, 25 to 30 parts by weight.

[0049] According to the forming process of the adsorbent of any embodiment of the first aspect of the present invention, the first component further contains alumina and activated carbon.

[0050] On this basis, it is further explained that if the first component contains alumina, then in parts by weight, the molecular sieve is 30 to 100 parts by weight, the alumina is 1 to 60 parts by weight; and the activated carbon is 1 to 30 parts by weight.

[0051] Further, in parts by weight,The weight parts of the molecular sieve are preferably any value taken from any set of numerical ranges within any of the following ranges: 30 to 100 parts by weight, 30 to 95 parts by weight, 30 to 90 parts by weight, 30 to 85 parts by weight, 30 to 80 parts by weight, 30 to 75 parts by weight, 30 to 70 parts by weight, 30 to 65 parts by weight, 30 to 60 parts by weight, 30 to 55 parts by weight, 30 to 50 parts by weight, 30 to 45 parts by weight, 30 to 40 parts by weight, 30 to 35 parts by weight, 35 to 100 parts by weight, 35 to 95 parts by weight, 35 to 90 parts by weight, 35 to 85 parts by weight, 35 to 80 parts by weight, 35 to 75 parts by weight, 35 to 70 parts by weight, 35 to 65 parts by weight, 35 to 60 parts by weight, 35 to 55 parts by weight, 35 to 50 parts by weight, 35 to 45 parts by weight, 35 to 40 parts by weight, 40 to 100 parts by weight, 40 to 95 parts by weight, 40 to 90 parts by weight, 40 to 85 parts by weight, 40 to 80 parts by weight, 40 to 75 parts by weight, 40 to 70 parts by weight, 40 to 65 parts by weight, 40 to 60 parts by weight, 40 to 55 parts by weight, 40 to 50 parts by weight, 40 to 45 parts by weight, 45 to 100 parts by weight, 45 to 95 parts by weight, 45 to 90 parts by weight, 45 to 85 parts by weight, 45 to 80 parts by weight, 45 to 75 parts by weight, 45 to 70 parts by weight, 45 to 65 parts by weight, 45 to 60 parts by weight, 45 to 55 parts by weight, 45 to 50 parts by weight, 50 to 100 parts by weight, 50 to 95 parts by weight, 50 to 90 parts by weight, 50 to 85 parts by weight, 50 to 80 parts by weight, 50 to 75 parts by weight, 50 to 70 parts by weight, 50 to 65 parts by weight, 50 to 60 parts by weight, 50 to 55 parts by weight, 55 to 100 parts by weight, 55 to 95 parts by weight, 55 to 90 parts by weight, 55 to 85 parts by weight, 55 to 80 parts by weight, 55 to 75 parts by weight, 55 to 70 parts by weight, 55 to 65 parts by weight, 55 to 60 parts by weight, 60 to 100 parts by weight, 60 to 95 parts by weight, 60 to 90 parts by weight, 60 to 85 parts by weight, 60 to 80 parts by weight, 60 to 75 parts by weight, 60 to 70 parts by weight, 60 to 65 parts by weight, 65 to 100 parts by weight, 65 to 95 parts by weight, 65 to 90 parts by weight, 65 to 85 parts by weight, 65 to 80 parts by weight, 65 to 75 parts by weight, 65 to 70 parts by weight, 70 to 100 parts by weight, 70 to 95 parts by weight, 70 to 90 parts by weight, 70 to 85 parts by weight, 70 to 80 parts by weight, 70 to 75 parts by weight, 75 to 100 parts by weight, 75 to 95 parts by weight, 75 to 90 parts by weight, 75 to 85 parts by weight, 75 to 80 parts by weight, 80 to 100 parts by weight, 80 to 95 parts by weight, 80 to 90 parts by weight, 80 to 85 parts by weight, 85 to 100 parts by weight, 85 to 95 parts by weight, 85 to 90 parts by weight, 90 to 100 parts by weight, 90 to 95 parts by weight, 95 to 100 parts by weight.,

[0052] Further, in terms of parts by weight, the parts by weight of the alumina are preferably any value taken from any one of the following ranges: 1 to 60 parts by weight, 1 to 55 parts by weight, 1 to 50 parts by weight, 1 to 45 parts by weight, 1 to 40 parts by weight, 1 to 35 parts by weight, 1 to 30 parts by weight, 1 to 25 parts by weight, 1 to 20 parts by weight, 1 to 15 parts by weight, 1 to 10 parts by weight, 1 to 5 parts by weight, 5 to 60 parts by weight, 5 to 55 parts by weight, 5 to 50 parts by weight, 5 to 45 parts by weight, 5 to 40 parts by weight, 5 to 35 parts by weight, 5 to 30 parts by weight, 5 to 25 parts by weight, 5 to 20 parts by weight, 5 to 15 parts by weight, 5 to 10 parts by weight, 10 to 60 parts by weight, 10 to 55 parts by weight, 10 to 50 parts by weight, 10 to 45 parts by weight, 10 to 40 parts by weight, 10 to 35 parts by weight, 10 to 30 parts by weight, 10 to 25 parts by weight, 10 to 20 parts by weight, 10 to 15 parts by weight, 15 to 60 parts by weight, 15 to 55 parts by weight, 15 to 50 parts by weight, 15 to 45 parts by weight, 15 to 40 parts by weight, 15 to 35 parts by weight, 15 to 30 parts by weight, 15 to 25 parts by weight, 15 to 20 parts by weight, 20 to 60 parts by weight, 20 to 55 parts by weight, 20 to 50 parts by weight, 20 to 45 parts by weight, 20 to 40 parts by weight, 20 to 35 parts by weight, 20 to 30 parts by weight, 20 to 25 parts by weight, 25 to 60 parts by weight, 25 to 55 parts by weight, 25 to 50 parts by weight, 25 to 45 parts by weight, 25 to 40 parts by weight, 25 to 35 parts by weight, 25 to 30 parts by weight, 30 to 60 parts by weight, 30 to 55 parts by weight, 30 to 50 parts by weight, 30 to 45 parts by weight, 30 to 40 parts by weight, 30 to 35 parts by weight, 35 to 60 parts by weight, 35 to 55 parts by weight, 35 to 50 parts by weight, 35 to 45 parts by weight, 35 to 40 parts by weight, 40 to 60 parts by weight, 40 to 55 parts by weight, 40 to 50 parts by weight, 40 to 45 parts by weight, 45 to 60 parts by weight, 45 to 55 parts by weight, 45 to 50 parts by weight, 50 to 60 parts by weight, 50 to 55 parts by weight, 55 to 60 parts by weight.

[0053] Further, in terms of parts by weight, the parts by weight of the activated carbon are preferably any value taken from any one of the following ranges: 1 to 30 parts by weight, 1 to 25 parts by weight, 1 to 20 parts by weight, 1 to 15 parts by weight, 1 to 10 parts by weight, 1 to 5 parts by weight, 5 to 30 parts by weight, 5 to 25 parts by weight, 5 to 20 parts by weight, 5 to 15 parts by weight, 5 to 10 parts by weight, 10 to 30 parts by weight, 10 to 25 parts by weight, 10 to 20 parts by weight, 10 to 15 parts by weight, 15 to 30 parts by weight, 15 to 25 parts by weight, 15 to 20 parts by weight, 20 to 30 parts by weight, 20 to 25 parts by weight, 25 to 30 parts by weight.

[0054] For the forming process of the adsorbent according to any embodiment of the first aspect of the present invention, taking the sum of the masses of the first component and the second component as the total mass, the addition amount of the second component can be any value taken from any of the following ranges of values: 3-20 wt%, 3-19 wt%, 3-18 wt%, 3-17 wt%, 3-16 wt%, 3-15 wt%, 3-14 wt%, 3-13 wt%, 3-12 wt%, 3-11 wt%, 3-10 wt%, 3-9 wt%, 3-8 wt%; 4-20 wt%, 4-19 wt%, 4-18 wt%, 4-17 wt%, 4-16 wt%, 4-15 wt%, 4-14 wt%, 4-13 wt%, 4-12 wt%, 4-11 wt%, 4-10 wt%, 4-9 wt%, 4-8 wt%; 5-20 wt%, 5-19 wt%, 5-18 wt%, 5-17 wt%, 5-16 wt%, 5-15 wt%, 5-14 wt%, 5-13 wt%, 5-12 wt%, 5-11 wt%, 5-10 wt%, 5-9 wt%, 5-8 wt%; 6-20 wt%, 6-19 wt%, 6-18 wt%, 6-17 wt%, 6-16 wt%, 6-15 wt%, 6-14 wt%, 6-13 wt%, 6-12 wt%, 6-11 wt%, 6-10 wt%, 6-9 wt%, 6-8 wt%; 7-20 wt%, 7-19 wt%, 7-18 wt%, 7-17 wt%, 7-16 wt%, 7-15 wt%, 7-14 wt%, 7-13 wt%, 7-12 wt%, 7-11 wt%, 7-10 wt%, 7-9 wt%, 7-8 wt%; 8-20 wt%, 8-19 wt%, 8-18 wt%, 8-17 wt%, 8-16 wt%, 8-15 wt%, 8-14 wt%, 8-13 wt%, 8-12 wt%, 8-11 wt%, 8-10 wt%, 8-9 wt%; 9-20 wt%, 9-19 wt%, 9-18 wt%, 9-17 wt%, 9-16 wt%, 9-15 wt%, 9-14 wt%, 9-13 wt%, 9-12 wt%, 9-11 wt%, 9-10 wt%.

[0055] Further preferably, taking the sum of the masses of the first component and the second component as the total mass, the addition amount of the second component is preferably in turn: 3-20 wt%, 5-20 wt%, 6-20 wt%, 7-20 wt%, 6-15 wt%, 7-12 wt%, 8-12 wt%.

[0056] For the forming process of the adsorbent according to any embodiment of the first aspect of the present invention, taking the sum of the masses of the first component and the second component as the total mass, the addition amount of the thermoplastic polymer can be any value taken from any of the following ranges of values: 3-20 wt%, 3-19 wt%, 3-18 wt%, 3-17 wt%, 3-16 wt%, 3-15 wt%, 3-14 wt%, 3-13 wt%, 3-12 wt%, 3-11 wt%, 3-10 wt%, 3-9 wt%, 3-8 wt%; 4-20 wt%, 4-19 wt%, 4-18 wt%, 4-17 wt%, 4-16 wt%, 4-15 wt%, 4-14 wt%, 4-13 wt%, 4-12 wt%, 4-11 wt%, 4-10 wt%, 4-9 wt%, 4-8 wt%; 5-20 wt%, 5-19 wt%, 5-18 wt%, 5-17 wt%, 5-16 wt%, 5-15 wt%, 5-14 wt%, 5-13 wt%, 5-12 wt%, 5-11 wt%, 5-10 wt%, 5-9 wt%, 5-8 wt%; 6-20 wt%, 6-19 wt%, 6-18 wt%, 6-17 wt%, 6-16 wt%, 6-15 wt%, 6-14 wt%, 6-13 wt%, 6-12 wt%, 6-11 wt%, 6-10 wt%, 6-9 wt%, 6-8 wt%; 7-20 wt%, 7-19 wt%, 7-18 wt%, 7-17 wt%, 7-16 wt%, 7-15 wt%, 7-14 wt%, 7-13 wt%, 7-12 wt%, 7-11 wt%, 7-10 wt%, 7-9 wt%, 7-8 wt%; 8-20 wt%, 8-19 wt%, 8-18 wt%, 8-17 wt%, 8-16 wt%, 8-15 wt%, 8-14 wt%, 8-13 wt%, 8-12 wt%, 8-11 wt%, 8-10 wt%, 8-9 wt%; 9-20 wt%, 9-19 wt%, 9-18 wt%, 9-17 wt%, 9-16 wt%, 9-15 wt%, 9-14 wt%, 9-13 wt%, 9-12 wt%, 9-11 wt%, 9-10 wt%.

[0057] Further preferably, taking the sum of the masses of the first component and the second component as the total mass, the addition amounts of the thermoplastic polymer are preferably in sequence: 3-20 wt%, 5-20 wt%, 6-20 wt%, 7-20 wt%, 6-15 wt%, 7-12 wt%, 8-12 wt%.

[0058] For the forming process of the adsorbent according to any embodiment of the first aspect of the present invention, the bulk density of the molecular sieve is 0.6-0.9 g / ml.

[0059] For the forming process of the adsorbent according to any embodiment of the first aspect of the present invention, in step (b), the addition amount / density of the mixed raw material in the mold is 1.2 g / cm 3 ~1.8 g / cm 3 ;

[0060] Further, the addition amount / density of the mixed raw material in the mold is 1.3 g / cm 3 ~1.6 g / cm 3 ;

[0061] Even further, the addition amount / density of the mixed raw material in the mold is 1.35 g / cm 3 ~1.55 g / cm 3 .

[0062] Based on the forming process of the adsorbent according to any embodiment of the first aspect of the present invention, the second aspect of the present invention provides a continuous production process for the formed adsorbent. The process further includes the steps:

[0063] (c) Heating the product after the forming is completed, first demolding and discharging the material, and then cooling after demolding and discharging;

[0064] After the mold is demolded, directly perform step (b), and repeat step (c) to realize the continuous production of the formed adsorbent.

[0065] For the continuous production process of the formed adsorbent according to any embodiment of the second aspect of the present invention, in step (b), before adding the material into the mold, first prepare the mold and perform preheating of the mold. The preheating temperature is T 1 .

[0066] For the continuous production process of the formed adsorbent according to any embodiment of the second aspect of the present invention, before the continuous production ends, during the process from step (b) to step (c), there is no step of cooling the mold.

[0067] The "step of cooling the mold" mentioned here refers to a specifically added step for cooling the mold; for example, a step of natural cooling for a specific time or reaching a specific temperature; or a step of using special means / techniques / tools for a specific time or reaching a specific temperature.

[0068] The third aspect of the present invention provides a formed adsorbent, which is prepared by the forming process of the adsorbent according to any embodiment of the first aspect of the present invention;

[0069] Or, the formed adsorbent is prepared by the continuous production process of the formed adsorbent according to any embodiment of the second aspect of the present invention.

[0070] The fourth aspect of the invention provides an application of a shaped adsorbent, applying the shaped adsorbent to a refrigeration device; the shaped adsorbent is prepared by the shaping process of the adsorbent according to any one of the embodiments of the first aspect of the present invention;

[0071] Alternatively, the shaped adsorbent is prepared by the continuous production process of the shaped adsorbent according to any one of the embodiments of the second aspect of the present invention;

[0072] Alternatively, the shaped adsorbent is the shaped adsorbent according to any one of the embodiments of the third aspect of the present invention.

[0073] The fifth aspect of the invention provides an application of a shaped adsorbent, applying the shaped adsorbent to a drying filter element of a refrigeration system; the shaped adsorbent is prepared by the shaping process of the adsorbent according to any one of the embodiments of the first aspect of the present invention;

[0074] Alternatively, the shaped adsorbent is prepared by the continuous production process of the shaped adsorbent according to any one of the embodiments of the second aspect of the present invention;

[0075] Alternatively, the shaped adsorbent is the shaped adsorbent according to any one of the embodiments of the third aspect of the present invention.

[0076] The sixth aspect of the invention provides a drying filter element for a refrigeration device, the drying filter element includes a shaped adsorbent;

[0077] The shaped adsorbent is prepared by the shaping process of the adsorbent according to any one of the embodiments of the first aspect of the present invention;

[0078] Alternatively, the shaped adsorbent is prepared by the continuous production process of the shaped adsorbent according to any one of the embodiments of the second aspect of the present invention;

[0079] Alternatively, the shaped adsorbent is the shaped adsorbent according to any one of the embodiments of the third aspect of the present invention.

[0080] The seventh aspect of the invention provides a drying filter for a refrigeration device, the drying filter contains a shaped adsorbent;

[0081] The shaped adsorbent is prepared by the shaping process of the adsorbent according to any one of the embodiments of the first aspect of the present invention;

[0082] Alternatively, the shaped adsorbent is prepared by the continuous production process of the shaped adsorbent according to any one of the embodiments of the second aspect of the present invention;

[0083] Alternatively, the shaped adsorbent is the shaped adsorbent according to any one of the embodiments of the third aspect of the present invention.

[0084] A drying filter for a refrigeration device according to any embodiment of the seventh aspect of the present invention, wherein the inner core of the drying filter is a shaped adsorbent.

[0085] The eighth aspect of the present invention provides an application of a shaped adsorbent, applying the shaped adsorbent to food drying, or applying the shaped adsorbent to drug drying;

[0086] The shaped adsorbent is prepared by the shaping process of the adsorbent according to any embodiment of the first aspect of the present invention;

[0087] Alternatively, the shaped adsorbent is prepared by the continuous production process of the shaped adsorbent according to any embodiment of the second aspect of the present invention;

[0088] Alternatively, the shaped adsorbent is the shaped adsorbent according to any embodiment of the third aspect of the present invention.

[0089] The ninth aspect of the present invention provides a desiccant for food or a desiccant for drugs, the desiccant comprising a shaped adsorbent;

[0090] The shaped adsorbent is prepared by the shaping process of the adsorbent according to any embodiment of the first aspect of the present invention;

[0091] Alternatively, the shaped adsorbent is prepared by the continuous production process of the shaped adsorbent according to any embodiment of the second aspect of the present invention;

[0092] Alternatively, the shaped adsorbent is the shaped adsorbent according to any embodiment of the third aspect of the present invention.

[0093] Any embodiment of any aspect of the present invention can be combined with other embodiments without contradiction. In addition, in any embodiment of any aspect of the present invention, any technical feature can be applied to the corresponding technical feature in other embodiments without contradiction.

[0094] Without contradiction, any technical feature possessed by any aspect of the present invention or any embodiment of that aspect is equally applicable to any other embodiment or any embodiment of any other aspect. Of course, when applicable to each other, the corresponding features can be appropriately modified if necessary. The following further describes the various aspects and features of the present invention.

[0095] 3. Beneficial effects

[0096] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0097] 1. The shaping process of the adsorbent provided by the present invention and its continuous production process:

[0098] (1) The process uses thermoplastic polymer as the main bonding agent, and on this basis, requires the amount of the second component to be added. Based on this, it can ensure that the molded adsorbent has sufficient strength and an effective adsorption capacity.

[0099] (2) The process uses thermoplastic polymer as the main bonding agent, and further requires that the heating temperature T of the mixed raw material in the mold is 1 Close to or substantially close to the melting point temperature T of the thermoplastic polymer 0 , and the heating time is required to be no more than (i.e., ≤) 30 minutes, which can ensure that the process provided by the present invention can directly realize high-temperature demoulding after the mixed raw materials are heated and molded in the mold, without the key problems of demoulding adhesion or low demoulding strength and difficulty in demoulding grasping, and the mold can be directly added after demoulding, and quickly put into the next round of heating and molding production;

[0100] The traditional molding preparation method of molecular sieve adsorbent is manual single-mode pressing, low-temperature drying, high-temperature roasting, cooling, and packaging. This method is labor-intensive and energy-intensive. It should be noted that after the raw material is heated and molded in the mold, the mold and the molded product must be cooled before demoulding. The mold after demoulding needs to be preheated again before it can be put into the next round of heating and molding production process again, and the production efficiency is low. The molding process of the adsorbent provided by the present invention greatly shortens the time required for continuous production of molded adsorbents; at the same time, it provides an important foundation for realizing automated production and bidding farewell to the traditional labor-intensive manual operation mode; it can not only improve production efficiency, but also solve the problem of quality instability caused by manual multi-point control.

[0101] 2. The molded adsorbent provided by the present invention:

[0102] (1) The molded adsorbent has sufficient strength and effective adsorption capacity.

[0103] (2) The molded adsorbent is applied to a refrigeration device to treat the refrigerant fluid of the refrigeration system, and has good compatibility with HFC, HCFC, and CFC refrigerants, and complies with the US ANSI / ASHRAE 97 standard;

[0104] In addition, it has good compatibility with polyester (POE) oil, polyalkylene glycol (PAG) oil, mineral oil or alkylbenzene oil systems, as well as copper, iron, aluminum and other products, and complies with the US ANSI / ASHRAE 97 standard.

[0105] (3) The molded adsorbent is used as a desiccant in food or medicine to avoid desiccant powdering and contamination, and the molded products can be distinguished by color to prevent accidental ingestion. Brief Description of the Drawings

[0106] FIG Figure 1 is an electron micrograph of the formed adsorbent prepared in Example 1 of the present invention;

[0107] FIG Figure 2 is an electron micrograph of the formed adsorbent prepared in Example 2 of the present invention;

[0108] FIG Figure 3 is an electron micrograph of the formed adsorbent prepared in Example 3 of the present invention;

[0109] FIG Figure 4 is an electron micrograph of the formed adsorbent prepared in Example 4 of the present invention;

[0110] FIG Figure 5 is an electron micrograph of the formed adsorbent prepared in Example 5 of the present invention. Detailed Description of the Invention

[0111] All documents cited in the present invention are incorporated herein by reference in their entirety, and if the meanings expressed by these documents are inconsistent with those of the present invention, the description of the present invention shall prevail. In addition, various terms and phrases used in the present invention have the general meanings known to those skilled in the art. Even so, the present invention still wishes to provide more detailed explanations and interpretations of these terms and phrases herein. If the terms and phrases mentioned are inconsistent with the known meanings, the meanings expressed by the present invention shall prevail.

[0112] Unless otherwise specified, it should be understood that each individual element in the list and each combination of the individual elements in the list will be interpreted as a different embodiment. For example, a list of embodiments expressed as "A, B, or C" should be interpreted as including the embodiments "A", "B", "C", "A or B", "A or C", "B or C", or "A, B, or C".

[0113] In the present disclosure, the singular forms of the articles "a", "an", and "the" also include the corresponding plural referents, and the reference to a specific numerical value includes at least that specific value, unless the context clearly indicates otherwise. Thus, for example, the reference to "a substance" is a reference to at least one of such a substance and its equivalents.

[0114] Terms including ordinal numbers such as "first" and "second" may be used to explain various components or fluids, but these components and fluids are not limited by these terms. Thus, without departing from the teachings of the present disclosure, these terms are only used to distinguish one component / fluid from another component / fluid.

[0115] When describing items by using conjunctive terms such as “… and / or …”, the description should be understood to include any one of the associated listed items and all combinations of one or more thereof.

[0116] Generally, the use of the term “about” indicates an approximation that can vary according to the desired properties obtained from the disclosed subject matter and will be interpreted in a context-dependent manner based on functionality. Thus, one of ordinary skill in the art will be able to interpret a certain degree of variance on a case-by-case basis. In some cases, the number of significant digits used in expressing a particular value can be a representative technique for determining the variance allowed by the term “about”. In other cases, a gradient within a series of values can be used to determine the range of variance allowed by the term “about”. Further, all ranges in this disclosure are inclusive and combinable, and references to values stated in a range include each value within that range.

[0117] In the present invention, the term “comprising” or “containing” means that various components can be applied together to the compositions of the present invention. Thus, the terms “consisting essentially of...” and “consisting of...” are included in the term “comprising” or “containing”.

[0118] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs; the terms and / or used herein include any and all combinations of one or more of the associated listed items.

[0119] Any feature disclosed in this specification below, unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. Unless otherwise stated, each feature is only an example of a series of equivalent or similar features. The foregoing is only for helping to understand the present invention and should not be regarded as a specific limitation to the present invention. For those conditions not specified in the examples, they are carried out according to conventional conditions or conditions recommended by the manufacturer. For the reagents or instruments whose manufacturers are not specified, they are all conventional products that can be purchased.

[0120] The performance requirements in the examples herein are described as follows:

[0121] 1. Demolding qualification rate: Visually observe the appearance of the demolded sample and the mold. If any of the following problems exist, it is determined as unqualified:

[0122] A. Whether there is obvious raw material residue on the inner surface of the mold cavity after demolding;

[0123] B. Whether there are obvious notches or cracks on the surface of the sample after demolding;

[0124] C. Whether there are obvious depressions, soft collapses, or deformations on the sample after demolding;

[0125] D. Gently wipe the sample after demolding to check if there is any obvious particle / powder dropping phenomenon;

[0126] E. After demolding, the surface color of the sample is inconsistent, and there are obvious color differences in local areas;

[0127] F. There is white powder in local areas on the surface of the sample after demolding, mainly uncompletely melted PVDF

[0128] G. The material in the mold is loose and not bonded and formed, and cannot be demolded

[0129] H. There is obvious particle / powder scattering phenomenon when the sample is demolded;

[0130] 2. Static water adsorption capacity (unit: %):

[0131] (1) Determination of static water adsorption capacity

[0132] Step 1: Smash the central part of the sample to be tested into granular form; or smash it when vacuum-packaged in an aluminum foil bag, open the package and take out the granular form.

[0133] Step 2: Take out the weighing bottle, cover the weighing bottle cap and weigh m0, accurate to 0.001 g. Load the test sample into the weighing bottle and weigh m1, weigh two portions. The sample amount in each petri dish is preferably about 2.00 g - 2.50 g.

[0134] Step 3: Quickly pour the weighed test sample from the weighing bottle into and evenly spread it in two petri dishes.

[0135] Step 4: Shake the petri dish to disperse the test sample, and place it in a desiccator containing saturated sodium chloride aqueous solution.

[0136] Step 5: Place the desiccator in a forced-air drying oven, turn on the blower, the temperature in the oven is 35 °C, and adsorb at a constant temperature for 48 h. Open the desiccator, take out the petri dish, immediately pour the test sample into the weighing bottle, cover the bottle cap, and weigh m2, accurate to 0.001 g.

[0137] Note 1: If the aluminum foil bag needs to be disassembled and reassembled for the test, then immediately place the product in a nylon bag and seal it after taking the sample out of the aluminum foil bag, and confirm that the nylon bag is intact.

[0138] Note 2: It must be confirmed that the bulk sample to be tested is in a sealed state before sampling. Quickly take the molecular sieve for sampling after opening the package, the sampling process time is less than or equal to 5 min, and the sample cannot be touched with bare hands during sampling.

[0139] (2) Calculation of static water adsorption capacity

[0140] The water absorption capacity of the sample to be tested is expressed by the mass percentage X1 of water adsorbed by the product per unit mass, and is calculated according to formula (E.1):

[0141]

[0142] In the formula:

[0143] X1——Static water adsorption capacity, %;

[0144] m2——Mass of the sample plus weighing bottle after water absorption, g;

[0145] m1——Mass of the sample plus weighing bottle, g;

[0146] m0——Mass of the weighing bottle, g.

[0147] 3. Pre-absorbed water volume (%):

[0148] (1) Determination of pre-absorbed water volume

[0149] Step 1: Place the porcelain crucible in a box-type resistance furnace and bake it at 240 °C for 1 h.

[0150] Step 2: Take out the porcelain crucible, place it in a vacuum desiccator, evacuate for 3 min, cool it to room temperature, and weigh m1, accurate to 1 mg.

[0151] Step 3: Quickly obtain the sample to be tested, take 8 g to 50 g of the sample and place it in the porcelain crucible, and weigh m2, accurate to 1 mg.

[0152] Note: This process is required to be completed within 2 min, and the environmental relative humidity is lower than 50%.

[0153] Step 4: Place the porcelain crucible in the box-type resistance furnace and bake it at 240 °C for 4 h.

[0154] Step 5: Take out the porcelain crucible, place it in a vacuum desiccator, evacuate for 3 min, cool it to room temperature, and weigh m3, accurate to 1 mg.

[0155] (2) Calculation of pre-absorbed water volume

[0156] The water absorption capacity of the sample to be tested is in units of

[0157] The pre-adsorption property is expressed by the water content (mass fraction) of the sample to be tested and is calculated according to formula (E.2).

[0158]

[0159] In the formula:

[0160] X1——Water content of the sample to be tested, %;

[0161] m2——Mass of the sample plus porcelain crucible before baking, in grams (g);

[0162] m3——The mass of the roasted sample plus the porcelain crucible, in grams (g);

[0163] m1——The mass of the porcelain crucible, in grams (g).

[0164] The calculation result is accurate to two decimal places. Take the arithmetic mean of two parallel tests as the test result. The absolute difference between the parallel test results should not be greater than 0.5%.

[0165] 4. Strength (unit: N)

[0166] (1) Determination of strength

[0167] The instrument is a universal hydraulic press (0 - 100 kN).

[0168] Place the block-shaped sample to be tested in an environment with a certain relative humidity (saturated salt water) for 48 h, and then measure the compressive strength.

[0169] Place the block-shaped sample to be tested vertically on the working table of the universal hydraulic press. Start the hydraulic press and slowly apply pressure to the block-shaped sample to be tested in the axial direction. The bed speed is less than or equal to 10 mm / min until the block-shaped sample to be tested collapses, and record the maximum pressure it can withstand.

[0170] In this embodiment, when testing the strength of the adsorbent, the formed adsorbent used for testing (diameter 4.4 cm, height 7.5 cm) is in the shape of a cylinder.

[0171] The present invention will be further described below in conjunction with specific embodiments.

[0172] Embodiment 1

[0173] This embodiment provides a forming process for an adsorbent. Specifically,

[0174] The raw materials used and their dosages are as follows (the specific raw materials and dosages are subject to Table 2):

[0175] The first component: molecular sieve;

[0176] Among them, the particle size of the molecular sieve is 0.5 - 1 mm;

[0177] The second component: polyvinylidene fluoride (PVDF), polyvinyl alcohol (PVA)

[0178] Among them, the melting point of PVDF is calculated as 175 °C, and the melting point of PVA is calculated as 200 °C.

[0179] And, taking the sum of the masses of the first component and the second component as the total mass, the addition amount of the second component is W;

[0180] The process includes the steps:

[0181] (a) Preparation of materials: Use a mixer to mix the various raw materials of the first component, and then add the various raw materials of the second component for mixing to obtain the final mixture;

[0182] (b) Adsorbent forming: Preheat the mold, and the preheating temperature is T1;

[0183] After reaching the preset temperature, add materials to the mold, and the feeding density is 1.47 g / cm 3 , and heat and form the mixture in the mold. The heating temperature is T1, and the heating time is t1.

[0184] After the heating and forming is completed, do not perform a special cooling process. Directly demold the formed product from the mold, and then perform cooling and packaging to obtain the formed adsorbent product as Figure 1 shown.

[0185] Example 2

[0186] This example provides a forming process for an adsorbent. Specifically,

[0187] The raw materials used and their dosages are as follows (the specific raw materials and dosages are subject to Table 2):

[0188] First component: molecular sieve, activated alumina;

[0189] Among them, the particle size of the molecular sieve is 0.5 - 1 mm, and the particle size of the activated alumina is 0.5 - 1 mm;

[0190] Second component: polyvinylidene fluoride (PVDF), polyvinyl alcohol (PVA)

[0191] Among them, the melting point of PVDF is calculated as 175 °C, and the melting point of PVA is calculated as 200 °C;

[0192] And, taking the sum of the masses of the first component and the second component as the total mass, the addition amount of the second component is W;

[0193] The process includes the steps:

[0194] (a) Preparation of materials: Use a mixer to mix the various raw materials of the first component, and then add the various raw materials of the second component for mixing to obtain the final mixture;

[0195] (b) Adsorbent forming: Preheat the mold, and the preheating temperature is T1;

[0196] After reaching the preset temperature, add materials to the mold, and the feeding density is 1.47 g / cm 3, heating and forming the mixture in a mold, where the heating temperature is T1 and the heating time is t1.

[0197] After the heating and forming is completed, without a dedicated cooling step, directly demold the formed product from the mold, and then perform cooling and packaging after demolding to obtain the formed adsorbent product as Figure 2 shown.

[0198] Example 3

[0199] This example provides a forming process for an adsorbent. Specifically,

[0200] The raw materials used and their dosages are as follows (the specific raw materials and dosages are subject to Table 2):

[0201] The first component: molecular sieve;

[0202] Among them, the particle size of the molecular sieve is 0.5 - 1 mm;

[0203] The second component: polyvinylidene fluoride (PVDF), polyvinyl alcohol (PVA)

[0204] Among them, the melting point of PVDF is calculated as 175 °C, and the melting point of PVA is calculated as 200 °C;

[0205] And, taking the sum of the masses of the first component and the second component as the total mass, the addition amount of the second component is W;

[0206] The process includes the steps:

[0207] (a) Preparation of materials: Use a mixer to mix the various raw materials of the first component, and then add the various raw materials of the second component for mixing to obtain the final mixture;

[0208] (b) Forming of the adsorbent: Preheat the mold, and the preheating temperature is T1;

[0209] After reaching the preset temperature, add materials to the mold, and the feeding density is 1.47 g / cm 3 , heating and forming the mixture in a mold, where the heating temperature is T1 and the heating time is t1.

[0210] After the heating and forming is completed, without a dedicated cooling step, directly demold the formed product from the mold, and then perform cooling and packaging after demolding to obtain the formed adsorbent product as Figure 3 shown.

[0211] Example 4

[0212] This example provides a forming process for an adsorbent. Specifically,

[0213] The raw materials used and their dosages are as follows (the specific raw materials and dosages shall be subject to Table 2):

[0214] The first component: molecular sieve, activated alumina, activated carbon;

[0215] Among them, the particle size of the molecular sieve is 0.5 - 1 mm, the particle size of the activated alumina is 0.5 - 1 mm; the particle size of the activated carbon is 0.5 - 1 mm;

[0216] The second component: polyvinylidene fluoride (PVDF);

[0217] Among them, the melting point of PVDF is calculated as 175 °C;

[0218] Moreover, taking the sum of the masses of the first component and the second component as the total mass, the addition amount of the second component is W;

[0219] The process includes the steps:

[0220] (a) Preparation of materials: Use a mixer to mix the various raw materials of the first component, and then add the various raw materials of the second component for mixing to obtain the final mixture;

[0221] (b) Molding of the adsorbent: Preheat the mold, and the preheating temperature is T1;

[0222] After reaching the preset temperature, add materials to the mold, and the feeding density is 1.47 g / cm 3 , and heat and mold the mixture in the mold. The heating temperature is T1, and the heating time is t1.

[0223] After the heat molding is completed, without a special cooling link, directly demold the molded product from the mold, and then perform cooling and packaging after demolding to obtain the molded adsorbent product as Figure 4 shown.

[0224] Example 5

[0225] This example provides a molding process for an adsorbent. Specifically,

[0226] The raw materials used and their dosages are as follows (the specific raw materials and dosages shall be subject to Table 2):

[0227] The first component: molecular sieve;

[0228] Among them, the particle size of the molecular sieve is 0.5 - 1 mm;

[0229] The second component: polyvinylidene fluoride (PVDF); among them, the melting point of PVDF is calculated as 175 °C;

[0230] Moreover, taking the sum of the masses of the first component and the second component as the total mass, the addition amount of the second component is W;

[0231] The process includes the steps:

[0232] (a) Preparation of materials: Using a mixer to mix the respective raw materials of the first component, and then adding the respective raw materials of the second component for mixing to obtain the final mixture;

[0233] (b) Molding of the adsorbent: Pre-heating the mold, and the pre-heating temperature is T1;

[0234] After reaching the preset temperature, adding materials into the mold, and the feeding density is 1.47 g / cm 3 , causing the mixture to be heated and molded in the mold, the heating temperature is T1, and the heating time is 20 min.

[0235] After the heating and molding is completed, without a special cooling link, directly demolding the molded product from the mold, and then cooling and packaging it to obtain the Figure 5 shown molded adsorbent product.

[0236] Example 6

[0237] This example provides a molding process for an adsorbent. Specifically,

[0238] Example 6 is basically the same as Example 5, the only difference being that: in step (b) the molding of the adsorbent, the heating time t1 is 30 min.

[0239] Example 7

[0240] This example provides a molding process for an adsorbent. Specifically,

[0241] This example is basically the same as Example 5, the only difference being that: in step (b) the molding of the adsorbent, the heating time t1 is 10 min.

[0242] Example 8

[0243] This example provides a molding process for an adsorbent. Specifically,

[0244] This example is basically the same as Example 5, the only difference being that: in step (b) the molding of the adsorbent, the heating time t1 is 15 min.

[0245] Comparative Example t1

[0246] This comparative example provides a molding process for an adsorbent. Specifically,

[0247] This comparative example is basically the same as Example 5, except that: in the adsorbent forming in step (b), the heating time t1 is 40 min.

[0248] Comparative example t2

[0249] This comparative example provides a forming process for an adsorbent. Specifically,

[0250] This comparative example is basically the same as Example 5, except that: in the adsorbent forming in step (b), the heating time t1 is 50 min.

[0251] Comparative example t3

[0252] This comparative example provides a forming process for an adsorbent. Specifically,

[0253] This comparative example is basically the same as Example 5, except that: in the adsorbent forming in step (b), the heating time t1 is 60 min.

[0254] Comparative example t4

[0255] This comparative example provides a forming process for an adsorbent. Specifically,

[0256] This comparative example is basically the same as Example 5, except that: in the adsorbent forming in step (b), the heating time t1 is 5 min.

[0257] Example 9

[0258] This example provides a forming process for an adsorbent. Specifically,

[0259] This example is basically the same as Example 5, except that: in the raw materials used, the addition amount W of the second component is 3 wt%.

[0260] Example 10

[0261] This example provides a forming process for an adsorbent. Specifically,

[0262] This example is basically the same as Example 5, except that: in the raw materials used, the addition amount W of the second component is 7 wt%.

[0263] Example 11

[0264] This example provides a forming process for an adsorbent. Specifically,

[0265] This example is basically the same as Example 5, except that: in the raw materials used, the addition amount W of the second component is 12 wt%.

[0266] Example 12

[0267] This embodiment provides a forming process for an adsorbent. Specifically,

[0268] This embodiment is basically the same as Embodiment 5, with the only difference being that in the raw materials used, the addition amount W of the second component is 20 wt%.

[0269] Comparative Example W1

[0270] This comparative example provides a forming process for an adsorbent. Specifically,

[0271] This comparative example is basically the same as Embodiment 5, with the only difference being that in the raw materials used, the addition amount W of the second component is 30 wt%.

[0272] In the products of this comparative example, problems such as loose and unbonded materials inside the products occurred during demolding. After analysis, it was found that when the addition amount W of the second component was as high as 30 wt%, PVDF could not be well melted within 20 minutes of heating. Further exploration found that in the case where the addition amount W of the second component in this comparative example was as high as 30 wt%, the heating time needed to be at least 60 minutes to achieve a relatively good melting effect of PVDF. However, at the same time, it led to unqualified problems such as soft collapse of the product after demolding, and also resulted in a static water adsorption lower than 12%.

[0273] Comparative Example W2

[0274] This comparative example provides a forming process for an adsorbent. Specifically,

[0275] This comparative example is basically the same as Embodiment 5, with the only difference being that in the raw materials used, the addition amount W of the second component is 2 wt%.

[0276] Embodiment 13

[0277] This embodiment provides a forming process for an adsorbent. Specifically,

[0278] This embodiment is basically the same as Embodiment 5, with the only difference being that in step (b) of adsorbent forming, the heating temperature T1 is 190 °C.

[0279] Embodiment 14

[0280] This embodiment provides a forming process for an adsorbent. Specifically,

[0281] This embodiment is basically the same as Embodiment 5, with the only difference being that in step (b) of adsorbent forming, the heating temperature T1 is 160 °C.

[0282] Embodiment 15

[0283] This embodiment provides a forming process for an adsorbent. Specifically,

[0284] This example is basically the same as Example 5, except that: in step (b) of adsorbent forming, the heating temperature T1 is 185 °C.

[0285] Example 16

[0286] This example provides a forming process for an adsorbent. Specifically,

[0287] This example is basically the same as Example 5, except that: in step (b) of adsorbent forming, the heating temperature T1 is 165 °C.

[0288] Example 17

[0289] This example provides a forming process for an adsorbent. Specifically,

[0290] This example is basically the same as Example 5, except that: in step (b) of adsorbent forming, the heating temperature T1 is 180 °C.

[0291] Example 18

[0292] This example provides a forming process for an adsorbent. Specifically,

[0293] This example is basically the same as Example 5, except that: in step (b) of adsorbent forming, the heating temperature T1 is 170 °C.

[0294] Comparative Example T1

[0295] This comparative example provides a forming process for an adsorbent. Specifically,

[0296] This comparative example is basically the same as Example 5, except that: in step (b) of adsorbent forming, the heating temperature T1 is 200 °C.

[0297] Comparative Example T2

[0298] This comparative example provides a forming process for an adsorbent. Specifically,

[0299] This comparative example is basically the same as Example 5, except that: in step (b) of adsorbent forming, the heating temperature T1 is 150 °C.

[0300] Example 19 A continuous production process for an adsorbent

[0301] Based on any one of the foregoing Examples 1 to 18, or any one of the comparative examples in Comparative Examples t1 to t4, W1 to W2, T1 to T2, on the basis of its step (a) of preparing materials and step (b) of adsorbent forming:

[0302] It also includes step (c): After the heating and forming is completed, the product is first demolded and discharged, and then cooled after demolding and discharging.

[0303] After the mold is demolded, step (b) is directly carried out, and step (c) is repeated to realize the continuous production of the formed adsorbent.

[0304] Before the continuous production ends, during the repeated process of "step (c), step (b)", there is no step of cooling the mold.

[0305] Table 2 Parameters of Examples and Comparative Examples of the Present Invention

[0306]

[0307] Based on the samples prepared according to the examples described in Table 2, their properties are shown in Table 3.

[0308] Table 3 Sample Performance Parameters of Examples and Comparative Examples

[0309]

[0310]

[0311] Remarks: In the table, it is calculated based on the continuous production of 1000 pieces, and a qualified rate of 100% means that all 1000 pieces are qualified products after demolding.

[0312] It can be seen from Table 3 that in the forming process of the adsorbent provided by the present invention, a thermoplastic polymer is used as the main substance of the second component. On this basis, the addition amount of the second component will affect the strength and adsorption amount of the formed adsorbent. In addition, referring to Examples 5, 9-12, and Comparative Examples W1 and W2, it can be further seen that the addition amount of the second component will also affect the demolding qualified rate. Typically, in the product of Comparative Example W1 during demolding, there are problems such as loose materials not bonded and formed inside the product. After analysis, it is found that when the addition amount W of the second component is as high as 30 wt%, PVDF cannot be well melted within 20 minutes of heating time. Further exploration reveals that in the case where the addition amount W of the second component in this Comparative Example W1 is as high as 30 wt%, the heating time needs to be at least 60 minutes to make PVDF reach a relatively good melting effect. However, at the same time, it will cause the product to have an unqualified problem of soft collapse after demolding, and it will also cause the static water adsorption amount to be as low as below 12%. And through Examples 5, 9, and Comparative Example W2, it can also be seen that when the addition amount of the second component is too low, there will be a phenomenon of particle dropping during product demolding, or a phenomenon that the material is loose and not bonded and formed and cannot be demolded.

[0313] In the forming process of the adsorbent provided by the present invention, a thermoplastic polymer is used as the main substance of the second component, and it is further required that the heating temperature T of the mixed raw material during heating and forming in the mold 1 is close to or substantially close to the melting point temperature T of the thermoplastic polymer 0 (refer to Example 5, Examples 13 - 18, Comparative Examples T1, T2), the heating temperature T of the heating and forming 1 will particularly affect the qualified rate of demolding, and will also affect the strength of the formed adsorbent. On this basis, it can be seen from Examples 5 - 8 and Comparative Examples t1 - t4 that controlling the heating and forming time within 10 - 30 min can ensure that after the mixed raw material is heated and formed in the mold, high-temperature demolding can be directly achieved, and problems such as demolding adhesion, low strength after demolding, difficult demolding grasping, soft collapse after demolding, or loose material not bonded and formed and unable to demold can be avoided. Moreover, after the mold is demolded, the material can be directly added, and the production of the next round of heating and forming can be quickly carried out.

[0314] In addition, it can also be seen from Examples 1 - 5 that from the perspective of better strength of the formed adsorbent, it is preferred that the second component is a single polyvinylidene fluoride (PVDF) or polyvinyl alcohol (PVA). In addition, from the perspective of the overall performance and demolding qualified rate of the formed adsorbent, if the second component contains both polyvinylidene fluoride (PVDF) and polyvinyl alcohol (PVA) at the same time, calculated based on the total mass of the polyvinylidene fluoride (PVDF) and polyvinyl alcohol (PVA), it is inclined to make the amount of the polyvinylidene fluoride (PVDF) exceed (i.e., >) the amount of the polyvinyl alcohol (PVA).

[0315] Example 20

[0316] Based on the formed adsorbent provided in any one of the foregoing Examples 1 - 19, it can be used as the inner core of a drying filter.

[0317] In particular, it can be used as the drying filter core of the refrigeration system in a refrigeration device to adsorb trace moisture in the closed system, and at the same time, it cannot react with refrigerants, lubricating oils, and metal materials, and has good compatibility.

[0318] In addition, the formed adsorbent provided in any one of the foregoing Examples 1 - 19 can also be applied to food drying or drug drying; typically, the 3A molecular sieve (chemical formula: 2 / 3K 2 O·1 / 3Na 22 O·AI 2 O 3 ·2SiO 2 ·9 / 2H 2O) It is particularly suitable for use as the core of a drying filter in a refrigeration system for drying refrigerants, or for drying petroleum cracking gas, olefins, refinery gas, and oilfield gas, or for use as an industrial desiccant in industries such as chemicals, pharmaceuticals, and insulating glass.

[0319] The 4A molecular sieve (chemical formula: Na2O·Al2O3·2SiO2·9 / 2H2O) described above is particularly suitable for the drying of natural gas, various chemical gases and liquids, refrigerants, pharmaceuticals, electronic materials, and labile substances, the purification of argon, and the separation of methane, ethane, and propane. For example, the deep drying of gases and liquids such as air, natural gas, hydrocarbon paraffins, and refrigerants; or, the production and purification of argon; or, the static drying of electronic components and moisture-sensitive and deteriorating substances; or, as a dehydrating agent in paints, polyesters, dyes, and coatings.

[0320] The 5A molecular sieve (chemical formula: 3 / 4CaO·1 / 4Na2O·Al2O3·2SiO2·9 / 2H2O) described above is particularly suitable for the drying, desulfurization, and decarbonization of natural gas; or, the separation of nitrogen and oxygen, the separation of nitrogen and hydrogen, and the production of oxygen, nitrogen, and hydrogen; or, the dewaxing of petroleum and the separation of normal paraffins from branched hydrocarbons and cycloalkanes.

[0321] The 13X molecular sieve (chemical formula: Na 2 O·Al 2 O 3 ·2.45SiO 2 ·6.0H 2 O) described above is particularly suitable for the purification of the feed gas of large and medium-sized air separation plants.

[0322] Any embodiment of any aspect of the present invention can be combined with other embodiments without contradiction. In addition, in any embodiment of any aspect of the present invention, any technical feature can be applied to the corresponding technical feature in other embodiments without contradiction.

Claims

1. The molding process of the adsorbent is characterized in that: The process comprises the steps of: (a) preparing a mixed raw material containing a first component and a second component; The first component contains a molecular sieve; The second component contains a thermoplastic polymer having a melting point temperature T0; Furthermore, the addition amount of the second component is 3-20wt% based on the total mass of the first component and the second component; (b) heating and molding the mixed raw material in a mold; wherein, The heating temperature is T1, and T1 is close to or substantially close to the melting point temperature T0 of the thermoplastic polymer; The heating time does not exceed 30 minutes.

2. The molding process of the adsorbent according to claim 1, characterized in that: Taking the sum of the mass of the first component and the second component as the total mass, the addition amount of the second component is 5 to 20 wt %; Alternatively, the amount of the second component added is 7 to 20 wt%; Alternatively, the added amount of the second component is 7-12 wt %.

3. The molding process of the adsorbent according to claim 1, characterized in that: The heating temperature T1 is T0±15°C; Alternatively, the heating temperature T1 is T0±13°C; Alternatively, the heating temperature T1 is T0±10°C; Alternatively, the heating temperature T1 is (T0-5°C) to (T0+15°C); Alternatively, the heating temperature T1 is (T0-5°C) to (T0+10°C); Alternatively, the heating temperature T1 is T0±8°C; Alternatively, the heating temperature T1 is T0±5°C.

4. The molding process of the adsorbent according to any one of claims 1 to 3, characterized in that: The heating time is 10 to 30 minutes; Alternatively, the heating time is 15 to 30 minutes; Alternatively, the heating time is 15 to 25 minutes; Alternatively, the heating time is 15 to 20 minutes.

5. The molding process of the adsorbent according to any one of claims 1 to 4, characterized in that: The thermoplastic polymer includes any one of polyvinylidene fluoride and polyvinylidene difluoride; Alternatively, the thermoplastic polymer includes polyvinyl alcohol and polyvinylidene fluoride, and T0 in this case is based on the higher melting point temperature of the two.

6. The molding process of the adsorbent according to claim 5, characterized in that: The content of the polyvinylidene fluoride is not less than that of the polyvinyl alcohol; Alternatively, the content of the polyvinylidene fluoride exceeds 50wt% based on the sum of the masses of the polyvinylidene fluoride and the polyvinyl alcohol; Alternatively, the content of the polyvinylidene fluoride exceeds 60 wt % calculated based on the sum of the masses of the polyvinylidene fluoride and the polyvinyl alcohol.

7. The molding process of the adsorbent according to any one of claims 1 to 4, characterized in that: The mixed raw material also contains aluminum oxide; And / or, the mixed raw material further contains activated carbon.

8. The molding process of the adsorbent according to any one of claims 1 to 4, characterized in that: In step (b), the amount / density of the mixed raw material added to the mold is 1.2 g / cm 3 ~1.8g / cm 3 ; And / or, the addition amount / density of the mixed raw material in the mold is 1.3g / cm 3 ~1.6g / cm 3 ; And / or, the addition amount / density of the mixed raw material in the mold is 1.35g / cm 3 ~1.55g / cm 3 .

9. The molding process of the adsorbent according to any one of claims 1 to 8, characterized in that: The process comprises the steps of: (a) preparing a mixed raw material containing a molecular sieve and a thermoplastic polymer; Wherein, the particle size of the molecular sieve is 0.5 to 5 mm; The thermoplastic polymer has a melting point temperature T0; and, Taking the mass of the mixed raw materials as the total mass, the amount of the thermoplastic polymer added is 3 to 20 wt%; (b) heating and molding the mixed raw material in a mold; wherein, The heating temperature is T1, and T1 is close to or substantially close to the melting point temperature T0 of the thermoplastic polymer; The heating time does not exceed 30 minutes.

10. A continuous production process for a shaped adsorbent, characterized in that: The process comprises the steps described in any one of claims 1 to 9; Also includes the steps: (c) the product after heating and molding is first demoulded and then cooled; Furthermore, after demoulding the mold, step (b) is directly performed, and step (c) is repeated to achieve continuous production of the molded adsorbent.

11. The continuous production process of a molded adsorbent according to claim 10, characterized in that: In step (b), before adding material into the mold, the mold is prepared and preheated, and the preheating temperature is T1.

12. The continuous production process of a molded adsorbent according to claim 10, characterized in that: Before the continuous production is finished, there is no step of cooling the mold in the process from step (b) to step (c).

13. A molded adsorbent, characterized in that: The shaped adsorbent is prepared according to the molding process of the adsorbent according to any one of claims 1 to 9, or prepared according to the continuous production process of the shaped adsorbent according to any one of claims 10 to 12.

14. Application of a shaped adsorbent, characterized in that: Applying the shaped adsorbent to a refrigeration device; Alternatively, the shaped adsorbent is applied to a dry filter element of a refrigeration system; Alternatively, the shaped adsorbent is applied to food drying; Alternatively, the shaped adsorbent is applied to drug drying; Wherein, the shaped adsorbent is prepared according to the molding process of the adsorbent according to any one of claims 1 to 9, or prepared according to the continuous production process of the shaped adsorbent according to any one of claims 10 to 12.

15. A drying filter element for a refrigeration device, characterized in that: The dry filter element includes a shaped adsorbent; The shaped adsorbent is prepared according to the molding process of the adsorbent according to any one of claims 1 to 9, or prepared according to the continuous production process of the shaped adsorbent according to any one of claims 10 to 12.

16. A filter drier for a refrigeration device, characterized in that: The filter dryer contains a shaped adsorbent; The shaped adsorbent is prepared according to the molding process of the adsorbent according to any one of claims 1 to 9, or prepared according to the continuous production process of the shaped adsorbent according to any one of claims 10 to 12.

17. A food desiccant or a pharmaceutical desiccant, characterized in that: The desiccant includes a shaped adsorbent; The shaped adsorbent is prepared according to the molding process of the adsorbent according to any one of claims 1 to 9, or prepared according to the continuous production process of the shaped adsorbent according to any one of claims 10 to 12.

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