High-temperature anti-powdering adsorbent formula for industrial waste heat ammonia adsorption refrigeration

Abstract

The application relates to the technical field of adsorbents, in particular to a high-temperature anti-powder-spraying adsorbent formula for industrial waste heat ammonia adsorption refrigeration, which is composed of the following components in parts by mass: zinc oxide 40-50 parts, aluminum oxide 20-25 parts, zirconium oxide 5-8 parts, silicon dioxide 3-5 parts, kaolin 6-10 parts, bentonite 4-6 parts, activated carbon 3-5 parts, sodium carboxymethyl cellulose 1-2 parts, titanate coupling agent 1-2 parts, silane coupling agent KH-550 0.5-1 part and boric acid 0.5-1 part; the composite formula of'main adsorbent + skeleton reinforcing agent + binder' is adopted, high-temperature calcination and surface modification treatment are carried out, the compression strength of the adsorbent particles is greater than or equal to 15 MPa, the abrasion rate is less than or equal to 0.5%, no obvious powder spraying phenomenon occurs after 5000 times of cyclic use, valve blockage and sealing abrasion can be effectively avoided, the high-temperature-resistant skeleton reinforcing agent is introduced into the formula, the crystal type transformation and sintering agglomeration of the adsorbent under high temperature of 120-200 DEG C can be inhibited, the specific surface area loss is less than or equal to 10% after 1000 times of circulation, the adsorption capacity retention rate is greater than or equal to 90%, the service life is prolonged to 8-10 years, and the system maintenance cost is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of adsorbent technology, specifically to a high-temperature anti-spraying powder adsorbent formulation for industrial waste heat ammonia adsorption and refrigeration. Background Technology

[0002] Adsorbents are the core functional materials in industrial waste heat ammonia adsorption refrigeration systems. Their adsorption capacity, desorption efficiency, high-temperature resistance, and structural stability directly determine the refrigeration capacity, energy efficiency, and service life of the system. Currently, there are many technical challenges in using adsorbents for industrial waste heat ammonia adsorption refrigeration:

[0003] Poor anti-powdering performance and high system operation risk: Traditional adsorbents are mostly single metal oxides or simple composite formulations with low particle strength and poor agglomeration. During the cycle of high-temperature desorption (80~120℃) and cooling adsorption, dust is easily generated (powdering phenomenon). This dust can block the high and low pressure control valves of the ammonia circuit, wear the sealing components, and cause system gas leakage and control failure, which seriously affects the continuous operation of the refrigeration system.

[0004] Insufficient high-temperature stability and short cycle life: Industrial waste heat sources are complex, and the temperature of flue gas or low-pressure steam fluctuates greatly (120~200℃). Traditional adsorbents are prone to crystal transformation, sintering and agglomeration under high-temperature environment, resulting in a significant decrease in specific surface area (specific surface area loss ≥40% after 1000 cycles), severe attenuation of adsorption capacity, and a service life of only 3 to 5 years.

[0005] Poor adsorption-desorption kinetics: The pore size distribution of traditional adsorbent formulations is unreasonable, with the proportion of micropores being too high or too low, resulting in high diffusion resistance of ammonia molecules, slow adsorption rate, incomplete desorption, and a coefficient of performance (COP) of less than 0.6 for the refrigeration system, which cannot make full use of industrial waste heat resources.

[0006] Weak corrosion resistance and poor adaptability: The corrosive media such as sulfides and nitrogen oxides contained in industrial waste heat flue gas will chemically react with traditional adsorbents and destroy their crystal structure; at the same time, the complexation reaction between adsorbents and ammonia has poor reversibility and is prone to "poisoning" failure after multiple cycles, making it difficult to adapt to complex industrial waste heat environments.

[0007] The formulation design is crude and lacks targeted optimization: the existing adsorbent formulations are not customized to take into account the working conditions of industrial waste heat ammonia adsorption refrigeration (high temperature, frequent circulation, complex media), and simply use general adsorbent formulations, resulting in a mismatch between the adsorbent performance and the requirements of the refrigeration system, which restricts the improvement of the system's refrigeration efficiency and stability.

[0008] Existing technologies have not yet formed a dedicated adsorbent formulation system that is "high temperature stable, anti-powder spraying, high adsorption capacity, and long cycle life". The powder spraying problem and insufficient high temperature stability have become the core bottlenecks restricting the industrial application of industrial waste heat ammonia adsorption refrigeration systems. To this end, a high temperature anti-powder spraying adsorbent formulation for industrial waste heat ammonia adsorption refrigeration is proposed. Summary of the Invention

[0009] In view of this, the present invention provides a high-temperature anti-spraying adsorbent formulation for industrial waste heat ammonia adsorption refrigeration, in order to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial option.

[0010] The technical solution of this invention is implemented as follows: A high-temperature anti-spraying powder adsorbent formulation for industrial waste heat ammonia adsorption and refrigeration, by mass parts, comprises: 40-50 parts zinc oxide, 20-25 parts alumina, 5-8 parts zirconium oxide, 3-5 parts silica, 6-10 parts kaolin, 4-6 parts bentonite, 3-5 parts activated carbon, 1-2 parts sodium carboxymethyl cellulose, 1-2 parts titanate coupling agent, 0.5-1 part silane coupling agent KH-550, and 0.5-1 part boric acid.

[0011] More preferably, the mass ratio of zinc oxide to aluminum oxide in the main adsorbent is 2:1. At this ratio, the adsorbent has the largest adsorption capacity for ammonia and the best reversibility of the complexation reaction.

[0012] More preferably, the zirconium oxide scaffold reinforcing agent has a particle size of 20~30μm and a specific surface area of ​​silica ≥300m² / g, which can effectively improve the high-temperature stability and mechanical strength of the adsorbent.

[0013] More preferably, the mass ratio of the surface modifier titanate coupling agent to the silane coupling agent KH-550 is 2:1, at which the adsorbent exhibits the best corrosion resistance and hydrophobicity.

[0014] Furthermore, this adsorbent is suitable for ammonia adsorption refrigeration systems driven by industrial waste heat at 120~200℃, and can be adapted to refrigeration needs in various scenarios such as waste heat from steel plant slag, low-pressure steam from chemical plants, and engine exhaust.

[0015] The preparation method of a high-temperature anti-spraying adsorbent formulation for industrial waste heat ammonia adsorption refrigeration includes the following steps:

[0016] Step 1: Raw material pretreatment and mixing

[0017] S1.1 Raw material refining: Zinc oxide, aluminum oxide, zirconium oxide and silicon dioxide are pulverized to a particle size ≤50μm and dried at 120℃ for 2-3 hours to remove moisture and impurities; kaolin and bentonite are calcined at 800℃ for 1-2 hours to activate their binding properties.

[0018] S1.2 Premixing: Weigh all solid components (main adsorbent, skeleton enhancer, binder, pore structure regulator, sintering aid) according to the formula mass parts, add them to a high-speed mixer, rotate at 800~1000 r / min, mix for 20~30 min to obtain a uniform solid mixture;

[0019] S1.3 Modification treatment: Add the surface modifier (titanium ester coupling agent, silane coupling agent KH-550) to the solid mixture, and add deionized water at the same time (solid-liquid mass ratio 1:0.3~0.5). Continue stirring for 15~20min to make the modifier uniformly coat the surface of the solid particles.

[0020] Step 2: Granulation and molding

[0021] S2.1 Kneading: The modified mixture is fed into a kneader and kneaded at 60~80℃ for 30~40 minutes to form a plastic mud.

[0022] S2.2 Granulation: The mud is fed into a spherical granulator, and the particle size is controlled at 0.5-2mm to obtain spherical wet particles;

[0023] S2.3 Pre-drying: Place the spherical wet granules into an oven and dry at 100~120℃ for 4~6 hours until the moisture content is ≤5%;

[0024] Step 3: High-temperature roasting and activation

[0025] S3.1 Segmented Calcination: The pre-dried particles are fed into a rotary kiln for segmented temperature-controlled calcination.

[0026] Low temperature range: 200~300℃, keep warm for 1~2 hours to remove residual moisture and organic matter;

[0027] Medium temperature range: 500~600℃, hold for 2~3 hours to promote the function of binder and sintering aid;

[0028] High temperature section: 800~900℃, heat preservation for 3~4 hours, to achieve solid-state reaction and sintering of each component;

[0029] S3.2 Cooling and Activation: After calcination, the adsorbent is naturally cooled to room temperature, and then nitrogen gas (flow rate 5-10 L / min) is introduced to purge for 1-2 hours to activate the active sites on the surface of the adsorbent, thus obtaining the high-temperature anti-powder adsorbent product.

[0030] Step 4: Performance Testing and Screening

[0031] S4.1 Physical and chemical performance testing: Test the specific surface area (≥200m² / g), pore size distribution (micropores + mesopores ≥70%), compressive strength (≥15MPa), and wear rate (≤0.5%) of the finished product.

[0032] S4.2 Adsorption performance test: Under the conditions of desorption temperature of 100℃ and adsorption temperature of 40℃, the ammonia adsorption capacity (≥0.3g / g) and adsorption rate (≥0.05g / (g・min)) were tested.

[0033] S4.3 Stability test: After 500 adsorption-desorption cycles, the adsorption capacity retention rate (≥90%) and specific surface area loss rate (≤10%) were tested.

[0034] S4.4 Screening and Warehousing: After all performance indicators meet the standards, qualified finished products are screened and put into the warehouse for future use.

[0035] More preferably, the conductivity of the deionized water in step S1.3 is ≤10μS / cm to avoid impurities in the water affecting the performance of the adsorbent.

[0036] More preferably, in step S2.2, the rotation speed of the spheroidizing granulator is 300~400 r / min, and a small amount of deionized water is sprayed during the granulation process to ensure that the sphericity of the particles is ≥0.8.

[0037] More preferably, in step S3.1, the calcination atmosphere of the rotary kiln is an air atmosphere, and the heating rate is controlled at 5~10℃ / min to avoid excessively rapid heating that could cause particle cracking.

[0038] More preferably, the wear rate detection in step S4.1 adopts the tumbling wear method, in which the adsorbent particles are placed in a wear tester, the rotation speed is 500 r / min, the test time is 1 hour, and the wear rate is calculated.

[0039] The embodiments of the present invention have the following advantages due to the adoption of the above technical solutions:

[0040] I. This invention adopts a composite formula of "main adsorbent + skeleton reinforcing agent + binder". After high-temperature calcination and surface modification treatment, the compressive strength of adsorbent particles is ≥15MPa, the wear rate is ≤0.5%, and there is no obvious powder spraying after 5000 cycles. It can effectively avoid valve blockage and seal wear. The high-temperature resistant skeleton reinforcing agent introduced into the formula can inhibit the crystal transformation and sintering agglomeration of adsorbent at high temperatures of 120~200℃. After 1000 cycles, the specific surface area loss is ≤10%, the adsorption capacity retention rate is ≥90%, and the service life is extended to 8~10 years, which significantly reduces the system maintenance cost.

[0041] II. This invention optimizes the pore size distribution of the adsorbent (40-50% micropores and 30-40% mesopores), resulting in low diffusion resistance of ammonia molecules, an adsorption rate increase of over 30%, a desorption efficiency of 95%, and a coefficient of performance (COP) of over 0.8 for the refrigeration system. This fully utilizes the refrigeration potential of industrial waste heat. The dense protective film formed by surface modification treatment can resist corrosion from sulfides and nitrogen oxides in industrial flue gas. The complexation reaction between the adsorbent and ammonia is highly reversible, maintaining stable adsorption-desorption performance even in complex media environments. This invention is suitable for various types of industrial waste heat scenarios, such as steel mills, chemical plants, and glass factories.

[0042] Third, this invention is a customized formula for the high-temperature and frequent-cycle operating conditions of industrial waste heat ammonia adsorption refrigeration, with significant synergistic effects among the components; the preparation process uses conventional calcination and granulation equipment, without the need for special high-end equipment, and the production cost is reduced by 15-20% compared with traditional adsorbents, making it suitable for large-scale production.

[0043] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 This is a flowchart of the preparation method of the present invention. Detailed Implementation

[0046] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0047] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0048] like Figure 1As shown in the embodiment of the present invention, a high-temperature anti-spraying powder adsorbent formulation for industrial waste heat ammonia adsorption and refrigeration is provided. By mass parts, the formulation consists of: 40-50 parts zinc oxide, 20-25 parts alumina, 5-8 parts zirconium oxide, 3-5 parts silica, 6-10 parts kaolin, 4-6 parts bentonite, 3-5 parts activated carbon, 1-2 parts sodium carboxymethyl cellulose, 1-2 parts titanate coupling agent, 0.5-1 part silane coupling agent KH-550, and 0.5-1 part boric acid.

[0049] In one embodiment, the mass ratio of zinc oxide to aluminum oxide in the main adsorbent is 2:1. At this ratio, the adsorbent has the largest adsorption capacity for ammonia and the best reversibility of the complexation reaction.

[0050] In one embodiment, the particle size of the zirconia skeleton reinforcement is 20~30μm, and the specific surface area of ​​silica is ≥300m² / g, which can effectively improve the high-temperature stability and mechanical strength of the adsorbent.

[0051] In one embodiment, the mass ratio of the surface modifier titanate coupling agent to the silane coupling agent KH-550 is 2:1, at which the adsorbent exhibits the best corrosion resistance and hydrophobicity.

[0052] In one embodiment, the adsorbent is suitable for ammonia adsorption refrigeration systems driven by industrial waste heat at 120~200℃, and can be adapted to refrigeration needs in various scenarios such as waste heat from steel plant slag, low-pressure steam from chemical plants, and engine exhaust.

[0053] The preparation method of a high-temperature anti-spraying adsorbent formulation for industrial waste heat ammonia adsorption refrigeration includes the following steps:

[0054] Step 1: Raw material pretreatment and mixing

[0055] S1.1 Raw material refining: Zinc oxide, aluminum oxide, zirconium oxide and silicon dioxide are pulverized to a particle size ≤50μm and dried at 120℃ for 2-3 hours to remove moisture and impurities; kaolin and bentonite are calcined at 800℃ for 1-2 hours to activate their binding properties.

[0056] S1.2 Premixing: Weigh all solid components (main adsorbent, skeleton enhancer, binder, pore structure regulator, sintering aid) according to the formula mass parts, add them to a high-speed mixer, rotate at 800~1000 r / min, mix for 20~30 min to obtain a uniform solid mixture;

[0057] S1.3 Modification treatment: Add the surface modifier (titanium ester coupling agent, silane coupling agent KH-550) to the solid mixture, and add deionized water at the same time (solid-liquid mass ratio 1:0.3~0.5). Continue stirring for 15~20min to make the modifier uniformly coat the surface of the solid particles.

[0058] Step 2: Granulation and molding

[0059] S2.1 Kneading: The modified mixture is fed into a kneader and kneaded at 60~80℃ for 30~40 minutes to form a plastic mud.

[0060] S2.2 Granulation: The mud is fed into a spherical granulator, and the particle size is controlled at 0.5-2mm to obtain spherical wet particles;

[0061] S2.3 Pre-drying: Place the spherical wet granules into an oven and dry at 100~120℃ for 4~6 hours until the moisture content is ≤5%;

[0062] Step 3: High-temperature roasting and activation

[0063] S3.1 Segmented Calcination: The pre-dried particles are fed into a rotary kiln for segmented temperature-controlled calcination.

[0064] Low temperature range: 200~300℃, keep warm for 1~2 hours to remove residual moisture and organic matter;

[0065] Medium temperature range: 500~600℃, hold for 2~3 hours to promote the function of binder and sintering aid;

[0066] High temperature section: 800~900℃, heat preservation for 3~4 hours, to achieve solid-state reaction and sintering of each component;

[0067] S3.2 Cooling and Activation: After calcination, the adsorbent is naturally cooled to room temperature, and then nitrogen gas (flow rate 5-10 L / min) is introduced to purge for 1-2 hours to activate the active sites on the surface of the adsorbent, thus obtaining the high-temperature anti-powder adsorbent product.

[0068] Step 4: Performance Testing and Screening

[0069] S4.1 Physical and chemical performance testing: Test the specific surface area (≥200m² / g), pore size distribution (micropores + mesopores ≥70%), compressive strength (≥15MPa), and wear rate (≤0.5%) of the finished product.

[0070] S4.2 Adsorption performance test: Under the conditions of desorption temperature of 100℃ and adsorption temperature of 40℃, the ammonia adsorption capacity (≥0.3g / g) and adsorption rate (≥0.05g / (g・min)) were tested.

[0071] S4.3 Stability test: After 500 adsorption-desorption cycles, the adsorption capacity retention rate (≥90%) and specific surface area loss rate (≤10%) were tested.

[0072] S4.4 Screening and Warehousing: After all performance indicators meet the standards, qualified finished products are screened and put into the warehouse for future use.

[0073] In one embodiment, the conductivity of the deionized water in step S1.3 is ≤10μS / cm to avoid impurities in the water affecting the performance of the adsorbent.

[0074] In one embodiment, the rotation speed of the spheroidizing granulator in step S2.2 is 300~400 r / min, and a small amount of deionized water is sprayed during the granulation process to ensure that the sphericity of the particles is ≥0.8.

[0075] In one embodiment, the calcination atmosphere of the rotary kiln in step S3.1 is an air atmosphere, and the heating rate is controlled at 5~10℃ / min to avoid excessive heating that could cause particle cracking.

[0076] In one embodiment, the wear rate detection in step S4.1 adopts the tumbling wear method, in which the adsorbent particles are placed in a wear tester, the rotation speed is 500 r / min, the test time is 1 h, and the wear rate is calculated.

[0077] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in the present invention, and these should all be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A formulation for a high-temperature anti-spraying powder adsorbent for industrial waste heat ammonia adsorption and refrigeration, characterized in that: The formula, by weight, comprises: 40-50 parts zinc oxide, 20-25 parts aluminum oxide, 5-8 parts zirconium oxide, 3-5 parts silicon dioxide, 6-10 parts kaolin, 4-6 parts bentonite, 3-5 parts activated carbon, 1-2 parts sodium carboxymethyl cellulose, 1-2 parts titanate coupling agent, 0.5-1 part silane coupling agent KH-550, and 0.5-1 part boric acid.

2. The formulation of the high-temperature anti-spraying adsorbent for industrial waste heat ammonia adsorption and refrigeration according to claim 1, characterized in that: The main adsorbent has a zinc oxide to aluminum oxide mass ratio of 2:

1. At this ratio, the adsorbent has the largest adsorption capacity for ammonia and the best reversibility of the complexation reaction.

3. The formulation of the high-temperature anti-spraying adsorbent for industrial waste heat ammonia adsorption and refrigeration according to claim 1, characterized in that: The zirconia reinforcing agent has a particle size of 20~30μm and a specific surface area of ​​silica ≥300m² / g, which can effectively improve the high-temperature stability and mechanical strength of the adsorbent.

4. The formulation of the high-temperature anti-spraying adsorbent for industrial waste heat ammonia adsorption and refrigeration according to claim 1, characterized in that: The mass ratio of the surface modifier titanate coupling agent to the silane coupling agent KH-550 is 2:

1. At this ratio, the adsorbent exhibits the best corrosion resistance and hydrophobicity.

5. The formulation of the high-temperature anti-spraying adsorbent for industrial waste heat ammonia adsorption and refrigeration according to claim 1, characterized in that: This adsorbent is suitable for ammonia adsorption refrigeration systems driven by industrial waste heat at 120~200℃, and can be adapted to refrigeration needs in various scenarios such as waste heat from steel plant slag, low-pressure steam from chemical plants, and engine exhaust.

6. A method for preparing a high-temperature anti-spraying powder adsorbent formulation for industrial waste heat ammonia adsorption refrigeration, in conjunction with the high-temperature anti-spraying powder adsorbent formulation for industrial waste heat ammonia adsorption refrigeration as described in any one of claims 1-5, characterized in that: Includes the following steps: Step 1: Raw material pretreatment and mixing S1.1 Raw material refining: Zinc oxide, aluminum oxide, zirconium oxide and silicon dioxide are pulverized to a particle size ≤50μm, dried at 120℃ for 2-3 hours to remove moisture and impurities; Kaolin and bentonite are calcined at 800℃ for 1-2 hours to activate their bonding properties; S1.2 Premixing: Weigh all solid components (main adsorbent, skeleton enhancer, binder, pore structure regulator, sintering aid) according to the formula mass parts, add them to a high-speed mixer, rotate at 800~1000 r / min, mix for 20~30 min to obtain a uniform solid mixture; S1.3 Modification treatment: Add the surface modifier (titanium ester coupling agent, silane coupling agent KH-550) to the solid mixture, and add deionized water at the same time (solid-liquid mass ratio 1:0.3~0.5). Continue stirring for 15~20min to make the modifier uniformly coat the surface of the solid particles. Step 2: Granulation and molding S2.1 Kneading: The modified mixture is fed into a kneader and kneaded at 60~80℃ for 30~40 minutes to form a plastic mud. S2.2 Granulation: The mud is fed into a spherical granulator, and the particle size is controlled at 0.5-2mm to obtain spherical wet particles; S2.3 Pre-drying: Place the spherical wet granules into an oven and dry at 100~120℃ for 4~6 hours until the moisture content is ≤5%; Step 3: High-temperature roasting and activation S3.1 Segmented Calcination: The pre-dried particles are fed into a rotary kiln for segmented temperature-controlled calcination. Low temperature range: 200~300℃, keep warm for 1~2 hours to remove residual moisture and organic matter; Medium temperature range: 500~600℃, hold for 2~3 hours to promote the function of binder and sintering aid; High temperature section: 800~900℃, heat preservation for 3~4 hours, to achieve solid-state reaction and sintering of each component; S3.2 Cooling and Activation: After calcination, the adsorbent is naturally cooled to room temperature, and then nitrogen gas (flow rate 5-10 L / min) is introduced to purge for 1-2 hours to activate the active sites on the surface of the adsorbent, thus obtaining the high-temperature anti-powder adsorbent product. Step 4: Performance Testing and Screening S4.1 Physical and chemical performance testing: Test the specific surface area (≥200m² / g), pore size distribution (micropores + mesopores ≥70%), compressive strength (≥15MPa), and wear rate (≤0.5%) of the finished product. S4.2 Adsorption performance test: Under the conditions of desorption temperature of 100℃ and adsorption temperature of 40℃, the ammonia adsorption capacity (≥0.3g / g) and adsorption rate (≥0.05g / (g・min)) were tested. S4.3 Stability test: After 500 adsorption-desorption cycles, the adsorption capacity retention rate (≥90%) and specific surface area loss rate (≤10%) were tested. S4.4 Screening and Warehousing: After all performance indicators meet the standards, qualified finished products are screened and put into the warehouse for future use.

7. The formulation of the high-temperature anti-spraying adsorbent for industrial waste heat ammonia adsorption and refrigeration according to claim 1, characterized in that: In step S1.3, the conductivity of the deionized water is ≤10μS / cm to avoid impurities in the water affecting the performance of the adsorbent.

8. The formulation of the high-temperature anti-spraying adsorbent for industrial waste heat ammonia adsorption and refrigeration according to claim 1, characterized in that: In step S2.2, the rotation speed of the spheroidizing granulator is 300~400 r / min, and a small amount of deionized water is sprayed during the granulation process to ensure that the sphericity of the particles is ≥0.

8.

9. The formulation of the high-temperature anti-spraying adsorbent for industrial waste heat ammonia adsorption and refrigeration according to claim 1, characterized in that: In step S3.1, the calcination atmosphere of the rotary kiln is air, and the heating rate is controlled at 5~10℃ / min to avoid excessive heating that could cause particle cracking.

10. The formulation of the high-temperature anti-spraying adsorbent for industrial waste heat ammonia adsorption and refrigeration according to claim 1, characterized in that: In step S4.1, the wear rate is detected using the tumbling wear method. The adsorbent particles are placed in a wear tester at a rotation speed of 500 r / min for 1 hour, and the wear rate is calculated.

Images