Green electricity coupling coal salt comprehensive utilization device
Through the green-electric coupling of coal-salt comprehensive utilization device, a coal-salt-electrochemical-material industry structure is built, which solves the problem of low comprehensive utilization value of coal and salt chemicals, and achieves long industrial chains, diversified products and high value-added production, with higher resource utilization and low carbonization of the production process.
Patent Information
- Application Number
- CN202422609314.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-28
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-10-28
AI Technical Summary
In the prior art, the comprehensive utilization value of coal chemical and salt chemical is low, and the resources are not fully utilized, resulting in low added value of the product.
Provide a device for comprehensive utilization of green-electric coupling coal salt, including a gasifier, washing device, purification device, methanol synthesis device, ethanol synthesis device, acetic acid synthesis device, olefin synthesis device, oxidation device, oxidation synthesis device, first polymerization device, second polymerization device, electrolytic device and dehydration device, and jointly build a coal-salt-electrochemical-material industry structure through coal-salt resources to realize comprehensive recycling.
It has achieved a long industrial chain, diversified products and high-end, a higher resource utilization rate, a low-carbon production process, a higher added value, and has achieved coal and salt to replace petroleum in producing chemicals and new materials.
Smart Images
Figure CN223292491U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical fields of coal chemical industry and salt chemical industry, and in particular to a device for comprehensive utilization of green electricity coupled with coal and salt. Background Art
[0002] However, my country is rich in salt resources, and most of the raw salt is used in industrial production, mainly in the soda ash and chlor-alkali industries. Both industries suffer from problems such as limited downstream product development and low product added value.
[0003] Although existing technologies also utilize coal chemical industry and salt chemical industry in an integrated manner, they are limited to the preparation of products such as caustic soda and polyvinyl chloride, and do not fully utilize the two resources in an integrated manner, thereby reducing the value of their comprehensive utilization. Utility Model Content
[0004] The embodiment of the present application solves the technical problem of low comprehensive utilization value of coal chemical industry and salt chemical industry in the prior art by providing a device for comprehensive utilization of green electricity coupled with coal and salt.
[0005] The embodiment of the present application provides a device for comprehensive utilization of green electricity coupled with coal and salt, comprising a gasifier, a washing device, a purification device, a methanol synthesis device, an ethanol synthesis device, an acetic acid synthesis device, an olefin synthesis device, an oxidation device, an oxidation synthesis device, a first polymerization device, a second polymerization device, an electrolysis device and a dehydration device; the raw coal is connected to the input end of the gasifier, and the output end of the gasifier is connected to the input end of the washing device; the raw salt is connected to the first input end of the electrolysis device; the output end of the washing device is connected to the input end of the purification device, and the first output end of the purification device and the first output end of the electrolysis device are both connected to the input end of the methanol synthesis device; the second output end of the purification device is respectively connected to the first input end of the ethanol synthesis device and the first input end of the acetic acid synthesis device; the first output end, the second output end and the third output end of the methanol synthesis device are respectively connected to the input end of the dehydration device, the acetic acid synthesis device and the dehydration device. The second input end of the olefin synthesis device and the input end of the olefin synthesis device; the input end of the dehydration device is connected to the second input end of the ethanol synthesis device; the output end of the ethanol synthesis device is connected to the ethanol product line; the output end of the acetic acid synthesis device and the first output end of the olefin synthesis device are respectively connected to the first input end and the second input end of the first polymerization device; the first output end of the olefin synthesis device and the output end of the first polymerization device are respectively connected to the first input end and the second input end of the second polymerization device, and the output end of the second polymerization device is connected to the EVA product line; the second output end of the electrolysis device is connected to the first input end of the oxidation device, the output end of the oxidation device and the second output end of the olefin synthesis device are respectively connected to the first input end and the second input end of the oxidation synthesis device, and the output end of the oxidation synthesis device is connected to the propylene oxide product line; the third output end of the electrolysis device is connected to the sodium chlorate product line.
[0006] In a possible implementation, the device for green electricity coupled with coal-salt comprehensive utilization further includes a new energy power generation device; the output end of the new energy power generation device is connected to the second input end of the electrolysis device.
[0007] In a possible implementation, the new energy in the new energy power generation device is one or more of wind energy, solar energy, water energy, ocean energy, and biomass energy.
[0008] In a possible implementation, the temperature of the gasifier is 1300-1500°C.
[0009] In a possible implementation, the device for green electricity coupled with coal-salt comprehensive utilization further includes a conversion device; the input end of the conversion device is connected to the output end of the washing device, and the output end thereof is connected to the input end of the purification device.
[0010] In one possible implementation, the purification device includes a conversion gas separation tank, a conversion gas washing tower, an ammonia washing tower and a low-temperature methanol washing tower; the input end of the conversion gas separation tank is connected to the output end of the conversion device, and its output end is connected to the input end of the conversion gas washing tower; the output end of the conversion gas washing tower is connected to the input end of the ammonia washing tower; the output end of the ammonia washing tower is connected to the input end of the low-temperature methanol washing tower; the first output end of the low-temperature methanol washing tower is connected to the methanol synthesis unit; the second output end of the low-temperature methanol washing tower is connected to the first input end of the ethanol synthesis unit and the first input end of the acetic acid synthesis unit, respectively.
[0011] In a possible implementation, the oxygen in the oxidation device comes from the system's air separation oxygen.
[0012] One or more technical solutions provided in the embodiments of this application have at least the following technical effects:
[0013] The device for green electricity coupled with comprehensive utilization of coal and salt provided in the embodiment of the present application includes a gasifier, a washing device, a purification device, a methanol synthesis device, an ethanol synthesis device, an acetic acid synthesis device, an olefin synthesis device, an oxidation device, an oxidation synthesis device, a first polymerization device, a second polymerization device, an electrolysis device and a dehydration device. The raw coal is transported to a gasifier for gasification to obtain a crude synthesis gas; the crude synthesis gas is transported to the input end of a scrubbing device to remove impurities such as solid particles carried in the crude synthesis gas to obtain a first synthesis gas, and the first synthesis gas is transported to a purification device. The purification device first converts part of the CO in the first synthesis gas into H2, and then removes CO2, H2S, COS and NH3 in the first synthesis gas to obtain a second synthesis gas; the raw salt is transported to an electrolysis device for electrolysis, and the first output end of the electrolysis device transports part of the purified hydrogen and the second synthesis gas output from the first end of the purification device to a methanol synthesis device to obtain methanol; the second output end of the purification device transports part of the CO in the second synthesis gas and part of the methanol from the second output end of the methanol synthesis device to the second input end of an acetic acid synthesis device to obtain acetic acid; the first output end of the methanol synthesis device transports part of the methanol to the input end of a dehydration device to obtain dimethyl ether, and the second output end of the purification device transports part of the CO in the second synthesis gas and the dimethyl ether from the output end of the dehydration device to an ethanol synthesis device to obtain ethanol; the third output end of the methanol synthesis device transports part of the methanol to an olefin synthesis device to obtain ethylene and propylene;
[0014] The output of the ethanol synthesis unit delivers ethanol to the ethanol production line; the output of the acetic acid synthesis unit delivers acetic acid and ethylene from the first output of the olefin synthesis unit to the input of the first polymerization unit. The output of the first polymerization unit, combined with ethylene from the first output of the olefin synthesis unit, is then delivered to the second polymerization unit. The output of the second polymerization unit delivers EVA to the EVA production line. The second output of the electrolysis unit delivers a portion of the purified hydrogen to the oxidation unit to produce hydrogen peroxide. The hydrogen peroxide and propylene from the second output of the olefin synthesis unit are then delivered to the oxidation synthesis unit to produce propylene oxide, which is then delivered to the propylene oxide production line. The second output of the electrolysis unit delivers sodium chlorate, which is then delivered to the sodium chlorate production line. Therefore, this green electricity-coupled coal-salt comprehensive utilization device combines coal and salt resources to create a coal-salt-electricity-chemical-material industrial structure, achieving comprehensive recycling. This device features a long industrial chain, diversified and high-end products, higher resource utilization, a low-carbon production process, and higher added value. Furthermore, this device allows coal and salt to replace petroleum in the production of chemicals and new materials. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0016] Figure 1 A schematic diagram of the structure of a device for green electricity coupled with coal-salt comprehensive utilization provided in an embodiment of the present application;
[0017] Figure 2 This is a schematic diagram of the structure of the purification device provided in an embodiment of the present application.
[0018] Icons: 1-gasification furnace; 2-washing device; 3-purification device; 31-conversion gas separation tank; 32-conversion gas washing tower; 33-ammonia washing tower; 34-low-temperature methanol washing tower; 4-methanol synthesis unit; 5-ethanol synthesis unit; 6-acetic acid synthesis unit; 7-olefin synthesis unit; 8-oxidation synthesis unit; 9-first polymerization unit; 10-second polymerization unit; 11-electrolysis unit; 12-new energy power generation unit; 13-conversion unit; 14-oxidation unit; 15-raw coal; 16-raw salt; 17-dehydration unit. DETAILED DESCRIPTION
[0019] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.
[0020] In the description of the embodiments of the present application, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limitations on the present application. The terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0021] The embodiment of the present application provides a device for comprehensive utilization of green electricity coupled with coal and salt, such as Figures 1 to 2As shown. This green electricity coupled coal-salt comprehensive utilization device includes a gasifier 1, a scrubber 2, a purifier 3, a methanol synthesis unit 4, an ethanol synthesis unit 5, an acetic acid synthesis unit 6, an olefin synthesis unit 7, an oxidizer 14, an oxidation synthesis unit 8, a first polymerization unit 9, a second polymerization unit 10, an electrolysis unit 11, and a dehydration unit 17. Raw coal 15 is connected to the input of the gasifier 1, and the output of the gasifier 1 is connected to the input of the scrubber 2. Raw salt 16 is connected to the first input of the electrolysis unit 11. Specifically, the raw salt is refined to obtain a saturated aqueous solution of refined salt, and the raw salt 16 is a saturated aqueous solution of refined salt. Furthermore, the concentration of the saturated aqueous solution of refined salt is 25-28%. The output of the scrubber 2 is connected to the input of the purifier 3, and the first output of the purifier 3 and the first output of the electrolysis unit 11 are both connected to the input of the methanol synthesis unit 4. The second output of the purifier 3 is connected to the first input of the ethanol synthesis unit 5 and the first input of the acetic acid synthesis unit 6, respectively. The first, second, and third outputs of the methanol synthesis unit 4 are connected to the input of the dehydration unit 17, the second input of the acetic acid synthesis unit 6, and the input of the olefin synthesis unit 7, respectively. The input of the dehydration unit 17 is connected to the second input of the ethanol synthesis unit 5. The output of the ethanol synthesis unit 5 is connected to the ethanol production line. The output of the acetic acid synthesis unit 6 and the first output of the olefin synthesis unit 7 are connected to the first and second inputs of the first polymerization unit 9, respectively. The first output of the olefin synthesis unit 7 and the output of the first polymerization unit 9 are connected to the first and second inputs of the second polymerization unit 10, respectively. The output of the second polymerization unit 10 is connected to the EVA production line. The second output of the electrolysis unit 11 is connected to the first input of the oxidation unit 14. The output of the oxidation unit 14 and the second output of the olefin synthesis unit 7 are connected to the first and second inputs of the oxidation synthesis unit 8, respectively. The output of the oxidation synthesis unit 8 is connected to the propylene oxide production line. The third output of the electrolysis unit 11 is connected to the sodium chlorate production line.
[0022] Furthermore, the electrolysis device 11 of the present application adopts a non-diaphragm process in the electrolysis process, and the sodium hydroxide and chlorine generated by electrolysis directly react to produce sodium chlorate.
[0023] Specifically, the raw coal 15 in the embodiment of the present application is pulverized coal, which is ground into pulverized coal with a mesh size of less than 100 so that it can react more fully in the gasifier 1.
[0024] It should be noted that the working principle of the device is as follows: the raw coal 15 is transported to the gasifier 1 for gasification to obtain a crude synthesis gas; the crude synthesis gas is transported to the input end of the washing device 2 to remove impurities such as solid particles carried in the crude synthesis gas to obtain a first synthesis gas, and the first synthesis gas is transported to the purification device 3. The purification device 3 first converts part of the CO in the first synthesis gas into H2, and then removes CO2, H2S, COS and NH3 in the first synthesis gas to obtain a second synthesis gas; the raw salt 16 is transported to the electrolysis device 11 for electrolysis, and the first output end of the electrolysis device 11 transports part of the purified hydrogen and the second synthesis gas output from the first end of the purification device 3 to the methanol synthesis device 4 to obtain methanol; the second output end of the purification device 3 transports part of the CO in the second synthesis gas and part of the methanol from the second output end of the methanol synthesis device 4 to the second input end of the acetic acid synthesis device 6 to obtain acetic acid; the first output end of the methanol synthesis device 4 transports part of the methanol to the input end of the dehydration device 17 to obtain dimethyl ether. The second output of purification unit 3 transports part of the CO in the second synthesis gas and dimethyl ether from the output of dehydration unit 17 to ethanol synthesis unit 5 to produce ethanol. The third output of methanol synthesis unit 4 transports part of the methanol to olefin synthesis unit 7 to produce ethylene and propylene. The output of ethanol synthesis unit 5 transports the resulting ethanol to the ethanol product line. The output of acetic acid synthesis unit 6 transports the resulting acetic acid and ethylene from the first output of olefin synthesis unit 7 to the input of first polymerization unit 9. The output of first polymerization unit 9 and ethylene from the first output of olefin synthesis unit 7 are then transported to second polymerization unit 10. The output of second polymerization unit 10 transports the resulting EVA to the EVA product line. The second output of electrolysis unit 11 transports part of the purified hydrogen to oxidation unit 14 to produce hydrogen peroxide. The hydrogen peroxide and propylene from the second output of olefin synthesis unit 7 are then transported to oxidation synthesis unit 8 to produce propylene oxide, which is then transported to the propylene oxide product line. The second output of electrolysis unit 11 outputs sodium chlorate, which is then transported to the sodium chlorate product line. Therefore, the green electricity coupled coal-salt comprehensive utilization device constructs a coal-salt-electricity-chemical-material industrial structure through the joint use of coal and salt resources to achieve comprehensive recycling utilization. It has a long industrial chain, diversified and high-end products, higher resource utilization, low-carbon production process, and higher added value. At the same time, the device also realizes the replacement of oil with coal and salt to produce chemicals and new materials.
[0025] Specifically, the second synthesis gas in this application is CO and H2.
[0026] Furthermore, dimethyl ether and the CO in the second synthesis gas are transported to an ethanol synthesis unit 5 to produce ethanol. The CO in the second synthesis gas is first hydroxylated and then reacts with dimethyl ether to produce ethanol. Methanol and the CO in the second synthesis gas are transported to an acetic acid synthesis unit 6 to produce acetic acid. The CO in the second synthesis gas is first hydroxylated and then reacts with methanol to produce acetic acid.
[0027] In the embodiment of the present application, the device for green electricity coupled with coal-salt comprehensive utilization further includes a new energy power generation device 12. The output end of the new energy power generation device 12 is connected to the second input end of the electrolysis device 11.
[0028] In the embodiment of the present application, the new energy in the new energy power generation device 12 is one or more of wind energy, light energy, water energy, ocean energy, and biomass energy.
[0029] It should be noted that this application realizes the coupling of new energy with coal chemical industry and salt chemical industry to produce chemical products and new materials, with the characteristics of high energy utilization efficiency, low energy consumption and low carbon emissions.
[0030] In the embodiment of the present application, the temperature of the gasifier 1 is 1300-1500°C.
[0031] In the embodiment of the present application, the device for green electricity coupled with coal-salt comprehensive utilization further includes a conversion device 13. The input end of the conversion device 13 is connected to the output end of the washing device 2, and the output end thereof is connected to the input end of the purification device 3.
[0032] It should be noted that the first synthesis gas from the scrubbing device 2 enters the input end of the conversion device 13 , so that part of the first synthesis gas is converted into , and then enters the input end of the purification device 3 .
[0033] Specifically, under normal circumstances, the CO:H2 ratio of the first synthesis gas coming out of the scrubbing device 2 is 2:1, but the actual synthesis of methanol requires CO:H2=1:2. Therefore, CO needs to be converted into H2, that is, CO+H2O=H2+CO2; each conversion of one hydrogen will produce one CO2. If 1 standard cubic meter of hydrogen is added to this process, the production of 1 standard cubic meter of CO2 can be reduced. The source of the supplementary H2 in this application is the electrolysis of the electrolysis device 11. Therefore, this application can significantly reduce carbon emissions. Based on the calculation of 3 million tons of coal gasification, it can reduce emissions by 10,000 tons per year.
[0034] In the embodiment of the present application, the purification device 3 includes a conversion gas separation tank 31, a conversion gas scrubber 32, an ammonia scrubber 33, and a low-temperature methanol scrubber 34. The input end of the conversion gas separation tank 31 is connected to the output end of the conversion device 13, and its output end is connected to the input end of the conversion gas scrubber 32. The output end of the conversion gas scrubber 32 is connected to the input end of the ammonia scrubber 33. The output end of the ammonia scrubber 33 is connected to the input end of the low-temperature methanol scrubber 34. The first output end of the low-temperature methanol scrubber 34 is connected to the methanol synthesis device 4. The second output end of the low-temperature methanol scrubber 34 is connected to the first input end of the ethanol synthesis device 5 and the first input end of the acetic acid synthesis device 6, respectively.
[0035] It should be noted that the unconverted first synthesis gas of the converted first synthesis gas is transported to the conversion gas separation tank 31 to separate the moisture and enter the conversion gas washing tower 32; the conversion gas washing tower 32 removes S, COS and some components in the mixed gas and then enters the ammonia washing tower 33; the ammonia washing tower 33 removes NH3 and enters the low-temperature methanol washing tower 34; the low-temperature methanol washing tower 34 removes CO2, H2S, COS in the mixed gas to obtain the second synthesis gas.
[0036] Specifically, the ammonia scrubbing tower 33 of the embodiment of the present application removes NH3 and reduces it to below 1 ppm.
[0037] In the embodiment of the present application, the oxygen of the oxidation device 14 comes from the system air separation oxygen.
[0038] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.
[0039] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present application.
Claims
1. A device for comprehensive utilization of green electricity coupled with coal and salt, characterized in that: The invention comprises a gasifier (1), a washing device (2), a purification device (3), a methanol synthesis device (4), an ethanol synthesis device (5), an acetic acid synthesis device (6), an olefin synthesis device (7), an oxidation device (14), an oxidation synthesis device (8), a first polymerization device (9), a second polymerization device (10), an electrolysis device (11) and a dehydration device (17); The raw coal (15) is connected to the input end of the gasifier (1), and the output end of the gasifier (1) is connected to the input end of the scrubbing device (2); The raw salt (16) is connected to the first input end of the electrolysis device (11); The output end of the washing device (2) is connected to the input end of the purification device (3), and the first output end of the purification device (3) and the first output end of the electrolysis device (11) are both connected to the input end of the methanol synthesis device (4); The second output end of the purification device (3) is connected to the first input end of the ethanol synthesis device (5) and the first input end of the acetic acid synthesis device (6) respectively; The first output end, the second output end, and the third output end of the methanol synthesis device (4) are respectively connected to the input end of the dehydration device (17), the second input end of the acetic acid synthesis device (6), and the input end of the olefin synthesis device (7); The input end of the dehydration device (17) is connected to the second input end of the ethanol synthesis device (5); The output end of the ethanol synthesis device (5) is connected to the ethanol product line; The output end of the acetic acid synthesis device (6) and the first output end of the olefin synthesis device (7) are connected to the first input end and the second input end of the first polymerization device (9) respectively; The first output end of the olefin synthesis device (7) and the output end of the first polymerization device (9) are respectively connected to the first input end and the second input end of the second polymerization device (10), and the output end of the second polymerization device (10) is connected to the EVA product line; The second output end of the electrolysis device (11) is connected to the first input end of the oxidation device (14), the output end of the oxidation device (14) and the second output end of the olefin synthesis device (7) are respectively connected to the first input end and the second input end of the oxidation synthesis device (8), and the output end of the oxidation synthesis device (8) is connected to the propylene oxide product line; The third output end of the electrolysis device (11) is connected to the sodium chlorate product line.
2. The device for green electricity coupled with coal-salt comprehensive utilization according to claim 1, characterized in that: Also included is a new energy power generation device (12); The output end of the new energy power generation device (12) is connected to the second input end of the electrolysis device (11).
3. The device for green electricity coupled with coal-salt comprehensive utilization according to claim 2, characterized in that: The new energy in the new energy power generation device (12) is one or more of wind energy, light energy, water energy, ocean energy, and biomass energy.
4. The device for green electricity coupled with coal-salt comprehensive utilization according to claim 1, characterized in that: The temperature of the gasification furnace (1) is 1300-1500°C.
5. The device for green electricity coupled with coal and salt comprehensive utilization according to claim 1 is characterized in that: Also includes a conversion device (13); The input end of the conversion device (13) is connected to the output end of the washing device (2), and the output end thereof is connected to the input end of the purification device (3).
6. The device for green electricity coupled with coal-salt comprehensive utilization according to claim 5, characterized in that: The purification device (3) comprises a conversion gas separation tank (31), a conversion gas washing tower (32), an ammonia washing tower (33) and a low-temperature methanol washing tower (34); The input end of the conversion gas separation tank (31) is connected to the output end of the conversion device (13), and the output end thereof is connected to the input end of the conversion gas scrubber (32); The output end of the conversion gas washing tower (32) is connected to the input end of the ammonia washing tower (33); The output end of the ammonia washing tower (33) is connected to the input end of the low-temperature methanol washing tower (34); The first output end of the low-temperature methanol washing tower (34) is connected to the methanol synthesis device (4); The second output end of the low-temperature methanol washing tower (34) is connected to the first input end of the ethanol synthesis device (5) and the first input end of the acetic acid synthesis device (6), respectively.
7. The device for green electricity coupled with coal and salt comprehensive utilization according to claim 5, characterized in that: The oxygen in the oxidation device (14) comes from the system's air separation oxygen.