Apparatus for manufacturing basic chemical raw materials, system for manufacturing basic chemical raw materials, and method for manufacturing basic chemical raw materials

Abstract

This invention provides a method for easily producing basic chemical raw materials from fossil fuels, plastic waste, or organic matter including biomass. [Solution] The apparatus for producing basic chemical raw materials according to the present disclosure is an apparatus for producing basic chemical raw materials using organic matter as a raw material, comprising: an organic matter processing unit that processes a target to be processed containing the organic matter to produce a hydrocarbon oil containing hydrocarbons; and a decomposition unit that cracks the hydrocarbon oil in an inert gas atmosphere to produce a basic chemical raw material having hydrocarbons.

Description

Technical Field

[0001] The present disclosure relates to a manufacturing apparatus for basic chemical raw materials, a manufacturing system for basic chemical raw materials, and a manufacturing method for basic chemical raw materials.

Background Art

[0002] From the perspective of forming a recycling-based society for resources, in order to suppress the consumption of limited natural resources such as fossil fuels and make effective use thereof, and to suppress the increase in waste, a cyclic utilization such as recycling of used natural resources is required.

[0003] Basic chemical raw materials (hereinafter also referred to as "basic chemicals") manufactured from fossil fuels contain olefins and are used in the manufacture of plastics and the like. In order to reduce the environmental impact and make effective use of natural resources, used plastics such as molded products after the use of plastics, plastic scraps generated during the molding process of molded products, and waste are recovered as plastic waste (hereinafter also simply referred to as "plastic"), recycled into basic chemical raw materials and the like, and reused in plastics. The development of plastic recycling technology is in progress.

[0004] Generally, a raw material derived from an organic substance such as fossil fuel or plastic waste is pyrolyzed to generate a hydrocarbon oil containing olefins, and then the hydrocarbon oil is hydrogenated to generate a hydrocracked oil with reduced olefins. The basic chemical raw materials are manufactured by further pyrolyzing the hydrocracked oil.

[0005] As such a manufacturing method for basic chemical raw materials, for example, a process for treating plastic waste is disclosed in which a treated hydrocarbon stream generated by converting plastic waste is supplied to a steam cracker to generate a steam cracker product, and a secondary heavy component stream separated from the steam cracker product is transported to a hydrotreating unit (see, for example, Patent Document 1).

[0006] Furthermore, a continuous process for converting waste plastics into recyclable materials for polypropylene polymerization is disclosed, comprising the following (a) to (g) (see, for example, Patent Document 2). (a) A step of selecting waste plastics including polyethylene and / or polypropylene, (b) A step of passing waste plastic through a pyrolysis reactor to thermally decompose at least a portion of the polyolefin waste and produce a pyrolysis effluent, (c) A step of separating the pyrolysis effluent into off-gas, pyrolysis oil and wax (including naphtha / diesel / heavy fractions) and char, (d) A process of passing the pyrolysis oil and wax through a refining FCC unit, (e) A process for recovering a liquefied petroleum gas C3 olefin / paraffin mixture from an FCC unit. (f) A step of separating C3 paraffin and C3 olefin into different fractions. (g) The process of passing the C3 olefin through a propylene polymerization reactor, [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Special Publication No. 2019-533041 [Patent Document 2] Special Publication No. 2023-508351 [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] Conventional methods for producing basic chemical raw materials, such as the process for processing plastic waste described in Patent Document 1, involve hydrogenating hydrocarbon oil. However, hydrogenating hydrocarbon oil requires large-scale processing equipment in various petroleum refining facilities that produce basic chemical raw materials, which presents a problem as it necessitates the scaling up of the processing equipment.

[0009] Furthermore, since hydrocarbon oils must be hydrocrackinged and then further broken down to separate and recover basic chemical raw materials, there was a problem in that the process of recovering basic chemical raw materials from hydrocarbon oils was complicated.

[0010] In Patent Document 2, plastic waste is transported to the processing facility in a solid state, which presents the problem of low bulk density and poor transport efficiency.

[0011] One aspect of this disclosure aims to provide a simple method for producing basic chemical raw materials from fossil fuels, plastic waste, or organic materials including biomass. [Means for solving the problem]

[0012] This disclosure provides the following configuration as a means for solving the above-mentioned problems. In other words, [1] A apparatus for producing basic chemical raw materials using organic matter as raw material, An organic matter processing unit that processes a target object containing the aforementioned organic matter to produce a hydrocarbon oil containing hydrocarbons, A decomposition unit that cracks the hydrocarbon oil in an inert gas atmosphere to produce basic chemical raw materials having hydrocarbons, A manufacturing apparatus for basic chemical raw materials. [2] The apparatus for producing basic chemical raw materials according to [1], wherein the hydrocarbon oil is not hydrogenated before being supplied to the decomposition section. [3] If the organic matter includes plastic waste, The apparatus for producing basic chemical raw materials according to [1] or [2], wherein the basic chemical raw materials produced in the decomposition section are recycled basic chemical raw materials. [4] A basic chemical raw material manufacturing apparatus according to any one of [1] to [3], having a recovery unit for recovering the basic chemical raw material. [5] A apparatus for producing basic chemical raw materials according to any one of [1] to [4], wherein the basic chemical raw material comprises at least one of an olefin and an aromatic compound. [6] The manufacturing apparatus of the basic chemical raw material according to [5], wherein the olefin is a lower olefin. [7] A basic chemical raw material manufacturing system for generating a basic chemical raw material from an organic substance as a raw material, an organic substance processing unit that processes an object to be processed containing the organic substance to generate a hydrocarbon oil containing hydrocarbons; a decomposition unit that cracks the hydrocarbon oil in an inert gas atmosphere to generate a basic chemical raw material containing hydrocarbons; and a control unit that controls the operations of the organic substance processing unit and the decomposition unit based on the amount of the object to be processed, the production amounts of the hydrocarbon oil and the basic chemical raw material. A basic chemical raw material manufacturing system having the above. [8] A method for manufacturing a basic chemical raw material for generating a basic chemical raw material from an organic substance as a raw material, an organic substance processing step in an organic substance processing unit for processing an object to be processed containing the organic substance to generate a hydrocarbon oil containing hydrocarbons; a cracking step in a decomposition unit for cracking the hydrocarbon oil in an inert gas atmosphere to generate a basic chemical raw material containing hydrocarbons; A method for manufacturing a basic chemical raw material including the above. [9] The method for manufacturing a basic chemical raw material according to [8], wherein the hydrocarbon oil is not hydrogenated before being supplied to the cracking step.

[10] The method for manufacturing a basic chemical raw material according to [8] or [9], including a conveying step of conveying the hydrocarbon oil from the organic substance processing unit to the decomposition unit.

Advantages of the Invention

[0013] One aspect of the present disclosure can easily manufacture a basic chemical raw material from an organic substance including fossil fuel, plastic waste, or biomass.

Brief Description of the Drawings

[0014] [Figure 1] It is a figure which shows an example of a structure of the manufacturing apparatus of the basic chemical raw material which concerns on embodiment of this indication. [Figure 2]It is a diagram showing an example of another configuration of the manufacturing apparatus for basic chemical raw materials. [Figure 3] It is a diagram showing an example of the configuration of the manufacturing system for basic chemical raw materials according to an embodiment of the present disclosure.

Mode for Carrying Out the Invention

[0015] Hereinafter, embodiments of the present disclosure will be described in detail. In this specification, "~" indicating a numerical range means including the numerical values described before and after it as the lower limit value and the upper limit value, unless otherwise specified. Also, when only the unit of the upper limit value is described in the numerical range represented by "~", it means that the lower limit value is also in the same unit.

[0016] <Manufacturing Apparatus for Basic Chemical Raw Materials> A manufacturing apparatus for basic chemical raw materials according to an embodiment of the present disclosure (hereinafter, simply referred to as "this embodiment") will be described. FIG. 1 is a diagram showing an example of the configuration of the manufacturing apparatus for basic chemical raw materials according to this embodiment. As shown in FIG. 1, the manufacturing apparatus 1A for basic chemical raw materials according to this embodiment has an organic substance processing unit 11, a decomposition unit 12, and a recovery unit 13, and generates basic chemical raw materials using an organic substance as a raw material.

[0017] Note that the manufacturing apparatus 1A for basic chemical raw materials may have the organic substance processing unit 11, the decomposition unit 12, and the recovery unit 13 in the same facility, or may have one or two of the organic substance processing unit 11, the decomposition unit 12, and the recovery unit 13 in different facilities, or may have all of the organic substance processing unit 11, the decomposition unit 12, and the recovery unit 13 in different facilities respectively.

[0018] The organic substance processing unit 11 may be provided in the same area as the decomposition unit 12 and the recovery unit 13, or may be provided in a different area. Also, the organic substance processing unit 11, the decomposition unit 12, and the recovery unit 13 may all be provided in different areas. Here, the area means land or a predetermined region. "The same area" may be land or a region within the same country. "Different areas" may be different countries respectively, or may be different regions within the same country.

[0019] In this specification, "organic matter" refers to liquid or solid organic substances that are typically processed in various refineries or chemical plants, such as petroleum refining facilities, plastic manufacturing facilities, and plastic refining facilities. Examples of organic matter include fossil fuels such as naphtha, crude oil, and natural gas derived from petroleum, plastic waste, or edible or non-edible biomass. Furthermore, resins derived from plastic waste may be dechlorinated resins.

[0020] Basic chemical raw materials are monomers of hydrocarbons produced primarily from organic materials, or compounds containing hydrocarbons. Examples of basic chemical raw materials include olefins and aromatic compounds. Examples of olefins include olefins with 2 to 8 carbon atoms. Examples of olefins with 2 to 8 carbon atoms include ethylene, propylene, 1-butene, 2-butene, isobutene, butadiene, pentene, isoprene, and cyclopentadiene. Examples of aromatic compounds include benzene, toluene, o-xylene, m-xylene, p-xylene, ethylbenzene, and styrene. These may be used individually or in combination of two or more. Furthermore, basic chemical raw materials may be virgin basic chemical raw materials derived from fossil fuels, basic chemical raw materials derived from biomass, recycled basic chemical raw materials, or mixtures thereof.

[0021] Plastic waste refers to used plastics such as molded plastic products after use (hereinafter referred to as "plastic products"), plastic residue and waste generated during the molding process of molded plastic products.

[0022] Plastics are resin products manufactured by polymerizing basic chemical raw materials derived from organic matter. Examples of plastics include polyethylene (PE), polypropylene (PP), polystyrene (PS), poly-1-butene, poly-2-butene, polyisobutene, poly-1,3-butadiene, polyphenyl, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polycarbonate (PC), polyvinyl chloride (PVC), polyvinylidene chloride (PVDC), chlorinated polyethylene, polyamide, polymethyl methacrylate, polytetrafluoroethylene, polyurethane, and acrylonitrile-butadiene-styrene copolymer.

[0023] The following describes, as an example, the case in which the organic matter processing unit 11 processes a target object consisting of organic matter including fossil fuels, plastic waste, or biomass.

[0024] Furthermore, the substances to be treated are not limited to those containing only organic matter, but may also contain organic matter and other substances.

[0025] "Processing of the target material" refers to a process that obtains hydrocarbon oil containing hydrocarbons by thermal decomposition or conversion of organic matter.

[0026] The organic matter processing unit 11 thermally decomposes the organic matter, which is the object to be processed, as an example of processing, to produce a thermal decomposition product (hereinafter also referred to as "thermal decomposition effluent") containing hydrocarbon oils including hydrocarbons.

[0027] The pyrolysis products include a liquid-phase hydrocarbon oil containing hydrocarbons (hereinafter also referred to as "pyrolysis plastic oil") and a gas-phase pyrolysis gas containing hydrocarbons, CO, hydrogen (hereinafter also referred to as "H2"), CO2, or HCl. Since organic matter includes fossil fuels, plastic waste, or biomass, the hydrocarbon oil produced by pyrolysis of organic matter is rich in hydrocarbons such as olefins. Therefore, the organic matter processing unit 11 can obtain hydrocarbon-rich hydrocarbon oil from organic matter. Furthermore, the pyrolysis gas in the pyrolysis products can be separated from the hydrocarbon oil by a general gas-liquid separation method, so only the hydrocarbon oil can be recovered in the organic matter processing unit 11.

[0028] Hydrocarbon oil is a fraction containing hydrocarbons such as olefins as its main component, and is an oily liquid substance. Hydrocarbon oil is a pyrolysis vapor that is condensed into a liquid state and discharged as a pyrolysis product in addition to pyrolysis gas, and is liquid at 25°C and 1 atmosphere.

[0029] Specific examples of hydrocarbon oils include those with a boiling point at atmospheric pressure in the range of 30 to 170°C, similar to light naphtha; those with a boiling point at atmospheric pressure in the range of 170 to 370°C, similar to diesel fuel; those with a boiling point at atmospheric pressure in the range of 370 to 550°C, similar to vacuum diesel fuel; and those with a boiling point at atmospheric pressure exceeding 550°C, similar to vacuum residue.

[0030] Pyrolysis gases are gases at 25°C and 1 atmosphere.

[0031] The organic matter processing unit 11 may steam crack the organic matter.

[0032] Steam cracking refers to the thermal decomposition of high-molecular-weight components in organic matter into low-molecular-weight hydrocarbons or carbon monoxide using heated steam (hereinafter also referred to as "steam"). Steam cracking of organic matter is particularly effective in generating ethylene and propylene among the hydrocarbon oils obtained. Therefore, separating and recovering the generated ethylene and propylene increases the efficiency of their production.

[0033] The organic matter processing unit 11 can be any pyrolysis equipment having a reactor that thermally decomposes organic matter to produce pyrolysis effluent. Examples of reactors include rising reactors (hereinafter also referred to as "riser reactors"), fixed-bed reactors, fluidized-bed reactors, film reactors, tubular reactors, stirred-tank reactors, rotary kilns, vacuum reactors, and microwave reactors. Among these, riser reactors are preferred. A riser reactor is a reactor that produces hydrocarbon oil containing hydrocarbons by contacting hydrocarbon oil with a fluid catalytic cracking catalyst and decomposing it. When the organic matter processing unit 11 uses a riser reactor, the organic matter processing unit 11 may also be a fluid catalytic cracking apparatus equipped with a riser reactor.

[0034] The atmosphere inside the reactor may be steam, or a mixture of steam and an inert gas.

[0035] Examples of inert gases include nitrogen gas and argon gas.

[0036] The heating temperature of the organic matter in the reactor can be appropriately selected depending on the components of the organic matter, for example, it may be set to 300 to 1100°C. When the heating temperature is between 300 and 1100°C, the organic matter is easily decomposed and hydrocarbon oil is readily obtained.

[0037] The heating time for organic matter in the reactor can be appropriately selected depending on the components of the organic matter, for example, from 1 second to 20 hours. If the heating time is from 1 hour to 20 hours, the organic matter can be sufficiently decomposed, and the pyrolysis oil can be recovered in good yield.

[0038] When heating organic matter in a reactor, some of the organic material may vaporize into a gaseous state in order to ensure that the organic material used as a raw material flows completely.

[0039] The organic matter processing unit 11 discharges the thermal decomposition products, including the generated hydrocarbon oil, to the outside.

[0040] The organic matter processing unit 11 may discharge the generated hydrocarbon oil to the outside without hydrogenating it.

[0041] The hydrocarbon oil discharged from the organic matter processing unit 11 is transported from the organic matter processing unit 11 to the decomposition unit 12 by a general transport means. The transport means may include, for example, transporting the hydrocarbon oil by filling it into a suitable container and then placing it on a commonly known conveyor such as a belt conveyor, or by transporting it on a truck, rail, or ship. Alternatively, the hydrocarbon oil may be transported continuously or intermittently from the organic matter processing unit 11 to the decomposition unit 12 by flowing it through piping connecting the organic matter processing unit 11 and the decomposition unit 12.

[0042] In the organic matter processing unit 11, by converting solid organic matter that may contain an air layer into liquid hydrocarbon oil, the transport efficiency of the hydrocarbon oil produced in the organic matter processing unit 11 from the organic matter processing unit 11 to the decomposition unit 12 can be improved.

[0043] In this embodiment, the case in which the organic matter processing unit 11 uses thermal decomposition as an example of processing organic matter such as fossil fuels, plastic waste, or biomass has been described. However, the method of processing organic matter in the organic matter processing unit 11 is not limited to thermal decomposition, and any method that processes organic matter to obtain hydrocarbon oil is acceptable. Other examples of methods for processing organic matter in the organic matter processing unit 11 include, for example, generating synthesis gas from natural gas, plastic waste, or edible or non-edible biomass, and obtaining hydrocarbon oil by the Fischer-Tropsch reaction.

[0044] The decomposition unit 12 includes a reactor (hereinafter also referred to as the "reactor") that cracks hydrocarbon oil transported from the organic matter processing unit 11 to produce decomposition products (hereinafter also referred to as "cracking products") containing multiple basic chemical raw materials having hydrocarbons.

[0045] If the organic matter supplied to the organic matter processing unit 11 includes plastic waste, basic chemical raw materials are regenerated from the plastic waste, and the decomposition unit 12 will produce decomposition products that include the basic chemical raw materials as recycled basic chemical raw materials. Furthermore, if the organic matter supplied to the organic matter processing unit 11 includes edible or non-edible biomass, basic chemical raw materials are regenerated from the biomass, and the decomposition unit 12 will produce decomposition products that include the basic chemical raw materials as biomass-derived basic chemical raw materials.

[0046] Cracking refers to the decomposition of high-molecular-weight hydrocarbons in hydrocarbon oil, or the thermal decomposition of low-molecular-weight hydrocarbons by cleaving carbon-carbon bonds. Low-molecular-weight hydrocarbons include, for example, ethylene, propylene, butylenes, butadiene, and aromatic compounds, and may include one or more of these hydrocarbons.

[0047] The reactor is kept under an inert gas atmosphere. This inert gas atmosphere allows for the production of decomposition products containing basic chemical raw materials in high yield from hydrocarbon oil. Therefore, multiple basic chemical raw materials can be recovered from the decomposition products in good yield.

[0048] Examples of inert gases include water vapor, nitrogen (hereinafter also referred to as "N2") gas, and argon gas. Among these, water vapor or N2 gas is preferred. When water vapor or N2 gas is used as the inert gas, multiple basic chemical raw materials can be recovered in good yield when recovering multiple basic chemical raw materials from the decomposition products in the recovery unit 13.

[0049] The concentration of inert gas in the reactor is preferably high from the viewpoint of suppressing side reactions, and excluding gases produced by the thermal decomposition of hydrocarbon oil, it is preferably 80% or more, more preferably 90% or more, even more preferably 95% or more, and most preferably 98% or more.

[0050] For example, a batch reactor, a fixed-bed reactor, and a fluidized-bed reactor may be used as the reactor in the decomposition section 12.

[0051] The heating temperature of the hydrocarbon oil in the reactor can be appropriately selected depending on the components of the hydrocarbon oil, for example, preferably 300 to 1100°C, and more preferably 500 to 1000°C. If the heating temperature is 300°C to 1100°C, the hydrocarbon oil can be decomposed to obtain decomposition products with a high content of basic chemical raw materials in good yield.

[0052] The method for heating the hydrocarbon oil in the reactor is not particularly limited and is acceptable as long as it can achieve the above-mentioned heating temperature. The method for heating the hydrocarbon oil may be an internal heating method, where the reactor is heated from the inside, or an external heating method, where the reactor is heated from the outside. Examples of internal heating methods include introducing a heat transfer medium such as preheated sand into the reactor, or blowing a small amount of oxygen or air into the reactor to partially burn the hydrocarbon oil inside the reactor. Examples of external heating methods include heating using an electric or fuel-burning furnace installed outside the reactor, or heating a reactor that is partially or entirely made of metal by induction heating.

[0053] The heating time for hydrocarbon oil in the reactor may be appropriately selected depending on the components of the hydrocarbon oil and the type of reactor, for example, it may be between 0.1 seconds and 20 hours. If the heating time is between 0.1 seconds and 20 hours, the hydrocarbon oil can be sufficiently decomposed, and decomposition products with a high content of basic chemical raw materials can be recovered in good yield. If the reactor is a continuous reactor such as a fixed-bed reactor or a fluidized-bed reactor, the heating time is preferably between 0.1 seconds and 1 hour.

[0054] When hydrocarbon oil is heated and decomposed in a reactor, some components may vaporize into a gaseous state in order to ensure that the components in the hydrocarbon oil become completely fluid.

[0055] The reaction pressure of the reactor is not particularly limited and may be adjusted as appropriate.

[0056] The highly concentrated decomposition products generated by heating in the reactor are rapidly cooled, preferably to a temperature 50°C or higher, more preferably 100°C or higher, than the heating temperature. This prevents the generated highly concentrated decomposition products from further reacting to form components other than the basic chemical raw materials, thereby preventing a decrease in the yield of the basic chemical raw materials.

[0057] The method for cooling the decomposition products generated in the reactor of the decomposition unit 12 is not particularly limited. For example, a cooling unit may be provided inside the reactor of the decomposition unit 12, or the products may be cooled in the recovery unit 13 after being discharged from the decomposition unit 12, or they may be cooled between the decomposition unit 12 and the recovery unit 13.

[0058] The recovery unit 13 separates and recovers several basic chemical raw materials from the decomposition products generated in the decomposition unit 12.

[0059] The recovery unit 13 may separate and recover basic chemical raw materials using methods commonly used for recovering basic chemical raw materials. For example, the recovery unit 13 may be equipped with multiple distillation columns, and gaseous basic chemical raw materials separated from the decomposition products in each distillation column may be extracted from each distillation column and discharged, for each basic chemical raw material, to a storage facility such as a chemical recycling facility or a petrochemical facility, via piping connecting the recovery unit 13 to the storage facility, thereby supplying multiple basic chemical raw materials to the storage facility continuously or intermittently. Alternatively, the basic chemical raw materials separated in the recovery unit 13 may be transported from the recovery unit 13 to a storage facility such as a chemical recycling facility or a petrochemical facility by means other than piping, after being filled into appropriate containers and placed on a commonly known conveyor such as a belt conveyor. Furthermore, the basic chemical raw materials separated in the recovery unit 13 may be transported from the recovery unit 13 to a storage facility such as a chemical recycling facility or petrochemical facility by means other than piping, after filling the basic chemical raw materials into appropriate containers, and then loading the containers filled with basic chemical raw materials onto trucks, trains, or ships.

[0060] Thus, the basic chemical raw material manufacturing apparatus 1A has an organic matter processing unit 11 and a decomposition unit 12, and in the decomposition unit 12, the hydrocarbon oil produced in the organic matter processing unit 11 is decomposed to produce basic chemical raw materials. Conventionally, a method was generally used in which the hydrocarbon oil produced in the organic matter processing unit 11 was hydrogenated to separate and recover hydrocarbons such as olefins from the hydrocarbon oil. In addition, raw materials that are generally used as organic matter usually require many processes such as collection, transportation, storage, crushing, molding, or supply of the raw material containing organic matter. The basic chemical raw material manufacturing apparatus 1A can recover multiple basic chemical raw materials directly from hydrocarbon oil by decomposing the hydrocarbon oil in the decomposition unit 12 without hydrogenation treatment or going through intermediate processes. Therefore, the basic chemical raw material manufacturing apparatus 1A can easily manufacture basic chemical raw materials from fossil fuels, plastic waste, or organic matter including biomass.

[0061] Furthermore, the basic chemical raw material manufacturing apparatus 1A can produce basic chemical raw materials in the decomposition section 12 without hydrogenating hydrocarbon oil, such as olefins, generated in the organic matter processing section 11. This eliminates the need for complex and expensive hydrogenation equipment, thus enabling the production of basic chemical raw materials without the need for such equipment. Consequently, hydrocarbon oil can be produced from organic raw materials in a small-scale facility, and basic chemical raw materials can be manufactured within or outside the same facility. Conventionally, it was believed that olefins in hydrocarbon oil inhibited the decomposition of hydrocarbon oil, and a method of cracking after hydrogenation of hydrocarbon oil was used. However, installing hydrogenation equipment within a facility increased the size and complexity of the facility. In addition, if hydrocarbon oil production and hydrocarbon oil hydrogenation were performed in separate facilities, the hydrocarbon oil had to be transported from the hydrocarbon oil production facility in one area to the hydrocarbon oil hydrogenation facility in another area, which added to the workload of manufacturing basic chemical raw materials from organic materials. In contrast, the basic chemical raw material manufacturing apparatus 1A can produce basic chemical raw materials in a small-scale facility without the burden of transporting hydrocarbon oil produced from organic matter from one facility in one area to another facility in another area. Furthermore, even when basic chemical raw materials are produced by transporting hydrocarbon oil from one facility in one area to another external facility in another area, the basic chemical raw material manufacturing apparatus 1A does not require a hydrogenation treatment facility, thus reducing the burden of work required for the production of basic chemical raw materials and lowering the production cost of basic chemical raw materials.

[0062] In this embodiment, as shown in Figure 2, the basic chemical raw material manufacturing apparatus 1B is equipped with a transport line L1 connecting the organic matter processing unit 11 and the decomposition unit 12, and the hydrocarbon oil discharged from the organic matter processing unit 11 may be transported to the decomposition unit 12 via the transport line L1.

[0063] (Methods for producing basic chemical raw materials) This section describes a method for producing basic chemical raw materials according to this embodiment. The method described will be performed using the basic chemical raw material production apparatus 1A shown in Figure 1. Furthermore, a case will be described in which the organic raw material includes plastic waste and hydrocarbon oil is produced by thermal decomposition.

[0064] In the method for producing basic chemical raw materials according to this embodiment, in the organic matter processing unit 11, the organic matter to be processed is thermally decomposed as an example of the processing to produce a thermal decomposition product having hydrocarbon oil containing hydrocarbons (thermal decomposition step).

[0065] In the organic matter processing unit 11, the organic matter may be steam-cracked. Details of the steam-cracking process are omitted.

[0066] Organic matter can be thermally decomposed in a reactor of the thermal decomposition equipment provided in the organic matter processing unit 11. Examples of reactors that can be used include riser reactors, fixed-bed reactors, fluidized-bed reactors, film reactors, tubular reactors, stirred-tank reactors, rotary kilns, vacuum reactors, or microwave reactors. It is sufficient that the organic matter can be thermally decomposed using any of these reactors to produce thermal decomposition products containing hydrocarbons. Details regarding the heating conditions of the organic matter in the reactor are omitted.

[0067] In the organic matter processing unit 11, the pyrolysis gas in the pyrolysis product is separated from the hydrocarbon oil by a general gas-liquid separation method, and only the hydrocarbon oil is recovered.

[0068] The hydrocarbon oil generated in the organic matter processing unit 11 is discharged to the outside.

[0069] Next, the hydrocarbon oil produced in the thermal decomposition process is transported from the organic matter processing unit 11 to the decomposition unit 12 (transportation process).

[0070] The method of transporting hydrocarbon oil is not particularly limited, and the hydrocarbon oil discharged from the organic matter processing unit 11 may be transported from the organic matter processing unit 11 to the decomposition unit 12 by general transport means. For example, the hydrocarbon oil may be transported by filling it into a suitable container and then placing it on a commonly known conveyor such as a belt conveyor, or by transporting it on a truck, rail, or ship. Alternatively, the hydrocarbon oil may be transported continuously or intermittently from the organic matter processing unit 11 to the decomposition unit 12 by flowing it through piping connecting the organic matter processing unit 11 and the decomposition unit 12.

[0071] Furthermore, the hydrocarbon oil produced in the organic matter processing unit 11 may be transported without undergoing hydrogenation treatment before being supplied to the decomposition unit 12.

[0072] Next, the hydrocarbon oil transported from the organic matter processing unit 11 is cracked in the decomposition unit 12 in an inert gas atmosphere to produce decomposition products containing multiple basic chemical raw materials having hydrocarbons (cracking step).

[0073] The hydrocarbon oil can be cracked in the reactor provided in the cracking unit 12. Examples of reactors that may be used include batch reactors, fixed-bed reactors, and fluidized-bed reactors.

[0074] Details regarding the conditions of the inert gas in the reactor and the heating conditions of the hydrocarbon oil in the reactor are omitted.

[0075] Furthermore, the decomposition products generated by heating in the reactor in the decomposition unit 12 may be cooled rapidly. The method of cooling the decomposition products generated in the reactor of the decomposition unit 12 is not particularly limited; for example, a cooling unit may be provided inside the reactor of the decomposition unit 12, or the products may be cooled in the recovery unit 13 after being discharged from the decomposition unit 12, or they may be cooled between the decomposition unit 12 and the recovery unit 13. Details such as cooling conditions are omitted.

[0076] Next, the multiple basic chemical raw materials in the decomposition products generated in the decomposition unit 12 are separated from the decomposition products and recovered in the recovery unit 13 (recovery step).

[0077] This allows for the production of several basic chemical raw materials using organic materials, including plastic waste, as raw materials.

[0078] Therefore, in the method for producing basic chemical raw materials according to this embodiment, the hydrocarbon oil obtained in the pyrolysis step is decomposed without undergoing hydrogenation treatment in the cracking step, and multiple basic chemical raw materials can be recovered directly from the hydrocarbon oil without going through intermediate processes. Accordingly, by using the method for producing basic chemical raw materials according to this embodiment, basic chemical raw materials can be easily produced from fossil fuels, plastic waste, or organic matter including biomass.

[0079] <Manufacturing System for Basic Chemical Raw Materials> The basic chemical raw material manufacturing system according to this embodiment will now be described. The basic chemical raw material manufacturing system according to this embodiment includes a control unit that controls the operation of the organic matter processing unit 11 and the decomposition unit 12 in the basic chemical raw material manufacturing apparatus 1A shown in Figure 1.

[0080] Figure 3 shows an example of the configuration of a basic chemical raw material manufacturing system according to this embodiment. As shown in Figure 3, the basic chemical raw material manufacturing system 2 according to this embodiment has a storage unit 21, an organic matter processing unit 22, a decomposition unit 23, a recovery unit 24, a control unit 25, a measurement unit 26, a transport line L21, a recovery line L22, and a control valve V1, and produces basic chemical raw materials using organic matter as raw material.

[0081] The organic matter processing unit 22, decomposition unit 23, and recovery unit 24 are the same as the organic matter processing unit 11, decomposition unit 12, and recovery unit 13 of the basic chemical raw material manufacturing apparatus 1A shown in Figure 1, and the transport line L21 is the same as the transport line L11 of the basic chemical raw material manufacturing apparatus 1B shown in Figure 2. Therefore, details of the organic matter processing unit 22, decomposition unit 23, recovery unit 24, and transport line L2 are omitted.

[0082] The containment section 21 is a storage tank for containing and storing the organic matter to be processed. Examples of the containment section 21 include storage tanks.

[0083] The control unit 25 is controllably connected to each component constituting the basic chemical raw material manufacturing system 2, and controls the operation of the storage unit 21, organic matter processing unit 22, decomposition unit 23 and recovery unit 24, as well as the opening and closing of the control valve V1, based on signals sent from the measurement unit 26.

[0084] The measuring unit 26 includes a measuring unit 26A for measuring the flow rate of organic matter flowing through the transport line L21A, a measuring unit 26B for measuring the flow rate of hydrocarbon oil flowing through the transport line L21B, and a measuring unit 26C for measuring the flow rate of basic chemical raw materials flowing through the recovery line L2.

[0085] The transport line L21 includes a transport line L21A that transports organic matter contained in the containment section 21 to the organic matter processing section 22, and a transport line L21B that transports hydrocarbon oil generated in the organic matter processing section 22 to the decomposition section 23.

[0086] The recovery line L22 is a passage for discharging decomposition products, which include multiple basic chemical raw materials generated in the decomposition section 23, to the outside.

[0087] The control valve V1 includes a control valve V11 provided in the transport line L21A, a control valve V12 provided in the transport line L21B, and a control valve V13 provided in the recovery line L22.

[0088] The control valve V11 adjusts the amount of organic matter stored in the storage section 21 that is transported to the organic matter processing section 22.

[0089] The control valve V12 adjusts the amount of hydrocarbon oil generated in the organic matter processing unit 22 that is transported to the decomposition unit 23.

[0090] The control valve V13 adjusts the amount of decomposition products, which include multiple basic chemical raw materials generated in the decomposition unit 23, that are transported to the outside.

[0091] In the basic chemical raw material manufacturing system 2, signals related to the measurement result of the amount of organic matter measured by the measurement unit 26A, signals related to the measurement result of the hydrocarbon oil flow rate measured by the measurement unit 26B, and signals related to the measurement result of the decomposition product flow rate measured by the measurement unit 26C are sent to the control unit 25. Based on these measurement result signals, the control unit 25 controls the opening and closing of the control valve V1 and the operation of the storage unit 21, the organic matter processing unit 22, the decomposition unit 23, and the recovery unit 24. As a result, in the basic chemical raw material manufacturing system 2, the amount of organic matter conveyed to the organic matter processing unit 22, the amount of hydrocarbon oil produced in the organic matter processing unit 22, and the amount of decomposition products including basic chemical raw materials produced in the decomposition unit 23 can be appropriately controlled.

[0092] The basic chemical raw material production system 2 comprises an organic matter processing unit 22, a decomposition unit 23, a control unit 25, a measurement unit 26, a transport line L21, and a control valve V1. The control unit 25 can appropriately control the operation of the organic matter processing unit 22 and the decomposition unit 23, as well as the opening and closing of the control valve V1, based on the amount of organic matter in the containment unit 21, the amount of hydrocarbon oil and decomposition products produced, etc., as measured by the measurement unit 26. Therefore, the basic chemical raw material production system 2 can appropriately control the amount of basic chemical raw materials produced from organic matter, as well as the amount of basic chemical raw materials recovered.

[0093] As described above, embodiments have been explained, but these embodiments are presented as examples only, and the present disclosure is not limited by these embodiments. The above embodiments can be implemented in various other forms, and various combinations, omissions, substitutions, and modifications are possible without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims of the invention and its equivalents. [Examples]

[0094] The embodiment will be described in more detail below with reference to examples, but the embodiment is not limited to these examples. Examples 1 to 4 are examples of actual cases.

[0095] <Breakdown of hydrocarbon oils> The four types of raw materials shown in Table 1 were decomposed in the decomposition section 12 of the basic chemical raw material manufacturing apparatus 1A shown in Figure 1 to generate decomposition products. N2 gas was supplied to the decomposition section 12 to create an inert gas atmosphere inside the reactor of the decomposition section 12. The decomposition products generated in the decomposition section 12 were passed through ice-cooled o-dichlorobenzene, and the gas components not absorbed by the o-dichlorobenzene were collected in a gas bag. The composition of the resulting o-dichlorobenzene solution and the contents of the gas bag were analyzed using a gas chromatograph equipped with a flame ionization detector, and the content ratio of the generated basic chemical raw materials was calculated.

[0096] In Example 1, 1,7-OCD (hereinafter also referred to as "1,7-octadiene") was used as the raw material; in Example 2, 2,4-DMH (hereinafter also referred to as "2,4-dimethylhexane") was used; in Example 3, n-octane was used; and in Example 4, 1-octene was used. The raw materials for Examples 1 and 4 are liquid hydrocarbons that are olefins mimicking unhydrogenated hydrocarbon oils, while the raw materials for Examples 2 and 3 are liquid hydrocarbons that are paraffins mimicking hydrogenated hydrocarbon oils.

[0097] The composition of the o-dichlorobenzene solution and the contents of the gas bag were analyzed using a gas chromatograph under the following conditions. (Analysis of o-dichlorobenzene solution) • Internal standard: 0.013 g cyclopentane / 1 mM Lo-dichlorobenzene solution. • Equipment: Nexus GC-2030 (manufactured by Shimadzu Corporation) • Column: DB-1 (φ0.25mm x 30m, manufactured by Agilent Technology) • Carrier gas type: He • Carrier gas flow rate: 97 mL / min Injection temperature: 350℃ • Sample injection volume: 1 μL Split ratio: 1 / 50 • Column temperature: Set the heating program in the following order: 35°C (10 mins) → heating (5°C / min) → 350°C (10 mins) Detector temperature: 350℃ (Analysis of gas bag contents) • Internal standard: 40 μL cyclopentane / 10 L gas • Equipment: Nexus GC-2030 (manufactured by Shimadzu Corporation) • Column: Rt-Alumina BOND (φ0.32mm x 30m, manufactured by Restek) • Carrier gas type: Ar Carrier gas flow rate: 360 mL / min Injection temperature: 200℃ • Sample injection volume: 1 mL Split ratio: 1 / 200 • Column temperature: Set the heating program in the following order: 120°C (9 minutes) → heating (10°C / minute) → 200°C (30 minutes) Detector temperature: 200℃

[0098] Table 1 shows the type of raw material supplied, the flow rate of N2 gas to the decomposition unit 12, the heating temperature (decomposition temperature) in the decomposition unit 12, and the composition of the decomposition products generated (meaning the "composition ratio of basic chemical raw materials," with the unit being "mass%"). Table 2 shows the composition of the basic chemical raw materials when classified according to the number of carbon atoms in the decomposition products. In Table 2, "C1" indicates the amount of basic chemical raw material with 1 carbon atom, "C2+C3" indicates the combined amount of basic chemical raw materials with 2 carbon atoms and basic chemical raw materials with 3 carbon atoms, and "C2" indicates the amount of basic chemical raw material with 2 carbon atoms. "C3=" indicates the amount of basic chemical raw material with one terminal end having 2 carbon atoms, and "C4" indicates the amount of basic chemical raw material with a terminal end having 4 carbon atoms. "C4==" indicates the amount of basic chemical raw material with two terminal ends having 2 carbon atoms, and "C5" indicates the amount of basic chemical raw material with 5 carbon atoms. Furthermore, among the decomposition products, ethylene, which is an example of a basic chemical raw material, corresponds to "C2," and propylene, which is another example of a basic chemical raw material, corresponds to "C3=".

[0099] [Table 1]

[0100] [Table 2]

[0101] Tables 1 and 2 show that in Examples 1 to 4, when each feedstock was decomposed in the decomposition unit 12, the yield of ethylene was at least 26% or the yield of propylene was at least 24% among the decomposition products. Generally, the yield of basic chemical raw materials in the decomposition products obtained when hydrocarbon oil is hydrogenated using a conventionally used naphtha cracker is approximately 22% for ethylene or 12% for propylene. Therefore, it can be said that by decomposing hydrocarbon oil in the decomposition unit 12 of the basic chemical raw material production apparatus 1A shown in Figure 1, at least one of ethylene and propylene can be obtained in a sufficiently high yield without hydrogenating the hydrocarbon oil using conventionally used methods.

[0102] Therefore, the basic chemical raw material manufacturing apparatus according to this embodiment can easily produce multiple basic chemical raw materials without hydrogenating hydrocarbon oil, and can be effectively used to regenerate basic chemical raw materials by recycling fossil fuels, plastic waste, or organic matter including biomass. [Explanation of Symbols]

[0103] 1A, 1B Manufacturing equipment for basic chemical raw materials 2. Manufacturing Systems for Basic Chemical Raw Materials 11, 22 Organic Matter Processing Unit 12, 23 Disassembly part 13, 24 Recovery section 21 Storage Unit 25 Control Unit 26, 26A, 26B, 26C Measurement section L1, L2, L21, L21A, L21B conveyor lines L22 Recovery Line V1, control valve

Claims

1. A apparatus for producing basic chemical raw materials that generates basic chemical raw materials from organic matter, An organic matter processing unit that processes a target object containing the aforementioned organic matter to produce a hydrocarbon oil containing hydrocarbons, A decomposition unit that cracks the hydrocarbon oil in an inert gas atmosphere to produce basic chemical raw materials having hydrocarbons, A manufacturing apparatus for basic chemical raw materials.

2. The apparatus for producing basic chemical raw materials according to claim 1, wherein the hydrocarbon oil is not hydrogenated before being supplied to the decomposition section.

3. If the aforementioned organic matter includes plastic waste, The apparatus for producing basic chemical raw materials according to claim 1 or 2, wherein the basic chemical raw materials generated in the decomposition section are recycled basic chemical raw materials.

4. The apparatus for producing basic chemical raw materials according to claim 1 or 2, further comprising a recovery unit for recovering the basic chemical raw materials.

5. The apparatus for producing basic chemical raw materials according to claim 1 or 2, wherein the basic chemical raw materials include at least one of an olefin and an aromatic compound.

6. The apparatus for producing basic chemical raw materials according to claim 5, wherein the olefin is a lower olefin.

7. A system for producing basic chemical raw materials that generates basic chemical raw materials from organic matter, An organic matter processing unit that processes a target object containing the aforementioned organic matter to produce a hydrocarbon oil containing hydrocarbons, A decomposition unit that cracks the hydrocarbon oil in an inert gas atmosphere to produce basic chemical raw materials having hydrocarbons, A control unit controls the operation of the organic matter processing unit and the decomposition unit based on the amount of the material to be processed, the amount of hydrocarbon oil and the amount of basic chemical raw materials produced, A manufacturing system for basic chemical raw materials.

8. A method for producing basic chemical raw materials using organic matter as a raw material, In the organic matter processing unit, there is an organic matter processing step of processing a target object containing the organic matter to produce a hydrocarbon oil containing hydrocarbons, In the decomposition section, a cracking step is performed in which the hydrocarbon oil is cracked in an inert gas atmosphere to produce a basic chemical raw material having hydrocarbons, A method for producing basic chemical raw materials, including [the specified element].

9. The method for producing basic chemical raw materials according to claim 8, wherein the hydrocarbon oil has not been hydrogenated before being supplied to the cracking step.

10. A method for producing a basic chemical raw material according to claim 8 or 9, comprising a transport step of transporting the hydrocarbon oil from the organic matter processing unit to the decomposition unit.

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