CN113717744A - Method and system for realizing cyclic utilization of hydrocarbon by using organic waste - Google Patents
Method and system for realizing cyclic utilization of hydrocarbon by using organic waste Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/08—Non-mechanical pretreatment of the charge, e.g. desulfurization
- C10B57/10—Drying
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/15—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively
- C07C29/151—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively with hydrogen or hydrogen-containing gases
- C07C29/1516—Multisteps
- C07C29/1518—Multisteps one step being the formation of initial mixture of carbon oxides and hydrogen for synthesis
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
本发明属于能源、化工和循环经济领域，涉及一种利用有机废弃物实现碳氢循环利用的方法和系统。有机废弃物首先进行粗碎和干燥预处理，然后进行热解，将干燥过程中产生的H2O与捕集的CO2，与有机废弃物热解产物混合后进行气化重整，生产合成气用于合成甲醇和氨，进一步合成有机原料和化工产品，以甲醇或氨为原料的有机产品及其衍生物使用废弃后可采用本发明的方法进行碳氢元素的循环利用。所述系统包括：有机废弃物预处理系统、热解系统、烟气处理系统、CO2储存装置、气化重整系统、合成气净化系统、气体分离系统、空分系统、合成甲醇(氨)系统和有机废弃物循环回收系统。本发明可实现CO2减排，减少化石资源消耗，并消纳有机废弃物。
The invention belongs to the fields of energy, chemical industry and circular economy, and relates to a method and a system for realizing hydrocarbon recycling by utilizing organic wastes. The organic waste is first subjected to coarse crushing and drying pretreatment, and then pyrolyzed. The H 2 O generated during the drying process and the captured CO 2 are mixed with the pyrolysis product of the organic waste and then gasified and reformed to produce synthetic The gas is used for synthesizing methanol and ammonia, and further synthesizing organic raw materials and chemical products. After the organic products and their derivatives using methanol or ammonia as raw materials are used and discarded, the method of the present invention can be used for the recycling of hydrocarbon elements. The system includes: organic waste pretreatment system, pyrolysis system, flue gas treatment system, CO2 storage device, gasification reforming system, synthesis gas purification system, gas separation system, air separation system, synthetic methanol (ammonia) system and organic waste recycling system. The present invention can realize CO 2 emission reduction, reduce consumption of fossil resources, and consume organic wastes.
Description
Technical Field
The invention belongs to the fields of energy, chemical engineering and circular economy, and particularly relates to a method and a system for realizing cyclic utilization of hydrocarbon by using organic wastes.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
At present, the production of organic products and the treatment of organic wastes have the problems of large greenhouse gas emission, low resource recycling level and the like.
From the production process, the production of organic industrial materials and living goods consumes a large amount of fossil raw materials and discharges a large amount of CO2And atmospheric pollutants. Two important chemical raw materials, methanol and ammonia, are taken as examples. At present, methanol synthesis gas is mainly prepared from fossil raw materials such as coal or natural gas, and most of the synthesis gas is prepared by a coal gasification method due to the limitation of natural gas resources in some areas. To adjust the excess hydrocarbon ratio in coal, a large amount of carbon is used as CO in the process of producing synthesis gas2To the atmosphere. According to the state of the art, with coal and withIn the production process using natural gas as raw material, about 7.4 tons and 3.9 tons of CO are respectively discharged into the atmosphere when 1 ton of methanol is produced2And the production process is accompanied by SO2、NOxAnd smoke emissions. Currently, ammonia is mainly prepared from coal. According to the average level of the industry for preparing synthetic ammonia from coal, about 2.5 tons of raw material coal is needed for producing 1 ton of ammonia, the synthetic energy consumption is about 1.3-1.6 tons of standard coal, and about 8.4 tons of CO are discharged to the atmosphere2And the production process is accompanied by SO2、NOxAnd smoke emissions. CO 22And the emission of air pollutants has adverse effects on the environment, thereby threatening the health of human beings and other organisms. In addition, the use of fossil raw materials for the synthesis of methanol and ammonia can also exacerbate the problem of a shortage of non-renewable resources.
From the perspective of organic waste treatment, the current treatment mode also has the problem of greenhouse gas and environmental pollutant emission, and the recycling level is low, which causes a great amount of waste of resources. The organic waste mainly comprises organic domestic garbage, industrial solid waste and agricultural straws. Organic domestic garbage and industrial solid waste are mainly disposed by a landfill method, an incineration method and a composting method. The landfill method occupies more land, the odor is not easy to control, the treatment difficulty of the percolate is higher, the stabilization period of the organic waste is longer, and CO is easy to generate in the period2And the environmental risk is long in influence time due to the leakage of gases such as methane. Although the incineration method is useful for reducing the volume, weight and resource of the waste, it generates a large amount of CO2And atmospheric pollutants. The composting method is a treatment mode for realizing the harmlessness and reclamation of organic wastes through the action of microorganisms, but cannot avoid the generation and emission of greenhouse gases. In the agricultural straw treatment process, the straw returning can cause partial carbon element to be discharged into the atmosphere; the utilization modes of straw combustion power generation and straw fuel are not beneficial to exerting the carbon fixation effect of the straw as biomass. In addition, researches show that a large amount of straws are not effectively utilized every year, and a considerable amount of straws are burned in the open air, so that not only is the resource waste caused, but also a large amount of CO is discharged2And the air pollutants form great threats to the atmospheric environment and the human health.
Carbon neutralizationIs a strategic decision of great country, one of the requirements for realizing the carbon neutralization target is to remold the low-carbon industrial process, the clean synthesis gas preparation process is the basis for realizing green low-carbon chemical industry, the carbon and hydrogen recycling can provide green low-carbon and hydrogen sources for the chemical industry, and CO is used2A sustainable safety approach to emission reduction.
Disclosure of Invention
The traditional preparation process of organic chemical raw materials such as methanol, ammonia and the like not only consumes a large amount of fossil resources, but also discharges a large amount of CO into the atmosphere2And atmospheric pollutants, which have adverse effects on the environment, climate and human health; at present, the organic waste treatment mode also discharges a large amount of greenhouse gases and environmental pollutants, and has low cyclic utilization rate and serious resource waste. Aiming at the problems, the invention provides a method and a system for realizing hydrocarbon cyclic utilization by utilizing organic wastes, which specifically comprises the steps of carrying out coarse crushing and drying on organic wastes such as organic industrial solid wastes, domestic wastes, agricultural straws and the like, and then carrying out pyrolysis to obtain coke powder and pyrolysis gas; utilizing captured CO2Mixing with vapor generated in the drying process of the organic waste and the pyrolysis product of the organic waste, and then carrying out gasification reforming to produce synthesis gas for synthesizing methanol or ammonia so as to reduce CO2The emission and the consumption of fossil resources, the consumption of organic waste and the realization of the purpose of cyclic utilization of hydrocarbon.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
in a first aspect of the present invention, there is provided a method for recycling hydrocarbons by using organic waste, comprising:
carrying out coarse crushing, drying and pyrolysis on the organic waste to generate a pyrolysis product and pyrolysis gas;
the pyrolysis product, the water vapor produced by the drying process, and the captured CO2Gas, high temperature reforming to syngas (CO, H)2)；
With said synthesis gas (CO, H)2) Producing methanol or ammonia as raw materials;
the method takes methanol and ammonia as raw materials to synthesize organic raw materials and produce organic products, the organic products and derivatives thereof are recycled after being used and discarded, and the organic products and the derivatives thereof are recycled by the method.
The invention pyrolyzes organic waste to remove high-energy substances and trapped CO in pyrolysis products2Mixing, producing synthesis gas for synthesizing methanol and ammonia, further synthesizing other organic chemical raw materials and producing organic products, finally forming the cyclic utilization of hydrocarbon, realizing the reduction of CO2The purpose of discharging and consuming fossil resources and consuming solid wastes.
In a second aspect of the present invention, there is provided a system for recycling hydrocarbons by using organic waste, comprising: organic waste pretreatment system, pyrolysis system, flue gas treatment system and CO2The system comprises a storage device, a gasification reforming system, a synthesis gas purification system, a gas separation device, a methanol synthesis system, an air separation system, an ammonia synthesis system and an organic waste recovery system;
the material outlet of the organic waste pretreatment system is connected with the material inlet of the pyrolysis system, the pyrolysis product outlet of the pyrolysis system is connected with the air inlet of the gasification reforming system, and the air inlet of the gasification reforming system is also respectively connected with the steam outlet and the CO outlet of the organic waste pretreatment system2CO of storage plant2The outlets are connected;
the gas outlet of the gasification reforming system is respectively connected with the gas inlet of the synthesis gas purification system and the gas inlet of the gas separation device;
a synthesis gas outlet of the synthesis gas purification system is connected with the methanol synthesis system;
the hydrogen outlet of the gas separation device is connected with the hydrogen inlet of the ammonia synthesis system;
and a material inlet of the organic waste pretreatment system is connected with a material outlet of the organic waste recovery system.
In a third aspect of the invention, the application of any one of the above systems for recycling hydrocarbon by using organic waste in the fields of energy, chemical engineering and recycling economy is provided.
The invention has the beneficial effects that:
(1) from CO2From the emission perspective, the method and the system for realizing cyclic utilization of hydrocarbon by utilizing organic waste have obvious emission reduction benefits, and particularly realize CO from the following three aspects2And (5) emission reduction. First, in the method according to the present invention, most of carbon in the organic waste enters into the synthesis gas or carbon product except for part of the pyrolysis gas used in the furnace, and CO is used as a CO product in comparison with the conventional method for treating the organic waste2The emission is greatly reduced. Secondly, in the method, organic waste replaces the fossil raw materials such as coal and the like to prepare the methanol and ammonia synthesis gas, and carbon elements in the fossil raw materials are not released, so that the CO can be obviously reduced2And (5) discharging. Thirdly, the preparation method of the methanol synthesis gas provided by the invention is used for collecting CO2And the negative emission can be realized by recycling. Therefore, the method can be used for clean low-carbon treatment of organic wastes, green low-carbon synthesis of methanol and ammonia and CO capture2And the three aspects of reutilization and the like are utilized to realize the emission reduction benefit.
(2) From the resource consumption perspective, compared with the method using coal or natural gas as the synthetic raw material, the method using organic waste as the raw material to synthesize ammonia and methanol can obviously reduce the usage amount of non-renewable fossil resources. Taking synthetic ammonia as an example, organic waste is used for replacing coal to synthesize ammonia, and the use of 2.5 tons of raw material coal can be reduced for producing 1 ton of ammonia. The implementation of the invention can reduce the use amount of fossil resources and promote the transformation of chemical production to the environment-friendly direction which mainly uses renewable resources.
(3) From the perspective of organic waste disposal, the method carries out pyrolysis after the organic waste is subjected to pretreatment such as coarse crushing and drying, and the pyrolysis product is used for preparing the synthesis gas of methanol and ammonia, so that the method is an effective supplement to the conventional organic waste disposal mode, and promotes the harmless, quantitative reduction and recycling treatment and application of the organic waste.
(4) The device has the advantages of simple structure, convenience in operation, strong practicability and easiness in large-scale production.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a method for recycling hydrocarbons by using organic wastes according to the present invention;
FIG. 2 is a system for recycling hydrocarbons by using organic waste to prepare methanol synthesis gas in example 1 of the present invention;
FIG. 3 is a system for recycling hydrocarbons by using organic waste to prepare ammonia synthesis gas according to example 2 of the present invention;
wherein, 1, a crusher, 2, a dryer, 3, a pyrolysis furnace, 4, a combustion furnace, 5CO2The system comprises a storage device, a carbon powder gasification furnace 6, a gasification reforming furnace 7, a bag-type dust remover 8, a desulfurization tower 9, a chimney 10, a synthesis gas purification system 11, a first compressor 12, a methanol synthesis tower 13, a separator 14, a second compressor 15, a light component removal tower 16, a rectifying tower 17, a raw material gas compressor 18, a filter 19, a heater 20, a gas separation device 21, an air compressor 22, an air separation rectifying tower 23, a hydrogen compressor 24, a nitrogen compressor 25, a washing tower 26, a heat exchanger 27, an ammonia synthesis gas compressor 28, an ammonia synthesis tower 29 and an ammonia storage device 30.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
The traditional preparation process of organic chemical raw materials such as methanol, ammonia and the like not only consumes a large amount of fossil resources, but also discharges a large amount of CO into the atmosphere2And atmospheric pollutants, which have adverse effects on the environment, climate and human health; at present, the organic waste treatment mode also discharges a large amount of greenhouse gases and environmental pollutants, and has low cyclic utilization rate and serious resource waste. Aiming at the problems in the prior art, the invention provides a method and a system for realizing cyclic utilization of hydrocarbon by using organic wastes, and the method and the system specifically comprise the steps of carrying out coarse crushing, drying and pyrolysis on organic wastes such as organic industrial solid wastes, domestic wastes, agricultural straws and the like to obtain coke powder and pyrolysis gas(ii) a CO to be trapped2Mixing with vapor generated in the drying process of organic waste and the pyrolysis product of organic waste, performing gasification reforming to produce synthesis gas for synthesizing methanol or ammonia to reduce CO2The emission and the consumption of fossil resources, the consumption of organic waste and the realization of the purpose of cyclic utilization of hydrocarbon.
Specifically, the invention is realized by the following technical scheme:
in a first aspect, the present invention provides a method and system for recycling hydrocarbons by using organic waste to produce methanol synthesis gas.
The method comprises the following steps: firstly, carrying out pretreatment such as drying, crushing and the like on organic wastes, and collecting water vapor generated in the drying process; pyrolyzing the pretreated organic waste to obtain pyrolysis gas and coke powder; feeding part of the pyrolysis gas into a combustion furnace for combustion, and providing heat for the pyrolysis furnace; the pyrolysis product coke powder and the captured CO2Sending the coke powder into a carbon powder gasification furnace to gasify the coke powder into CO; introducing the pyrolysis gas, CO obtained by gasification and steam generated in the organic waste dehydration and drying process into a gasification reforming furnace, and improving the hydrogen content through reforming to adjust the carbon-hydrogen ratio in the prepared synthesis gas to a proper ratio for synthesizing methanol; the methanol can be used for synthesizing organic raw materials such as olefin, acetic acid and the like, and further synthesizing industrial materials such as plastics, rubber and the like and living goods, and the organic products can be recycled after being used and discarded by adopting the method.
In some embodiments of the invention, the organic waste comprises organic industrial solid waste, household waste, and agricultural straw. The organic waste is dehydrated and dried before pyrolysis, and the drying method comprises heating drying, infrared drying, microwave drying and the like. The moisture produced by drying is recovered and used for reforming.
And (4) pyrolyzing the dried organic waste. In some embodiments of the present invention, the method for pyrolyzing organic waste may include a direct heating method, an indirect heating method, and a microwave heating method. The pyrolysis product comprises coke powder and pyrolysis gas. The pyrolysis product coke powder can be mixed with CO2Further gasification of the productRaw CO, CO gasified with coke powder2For CO capture in energy utilization, industrial processes or air2H added during reforming2And O is water vapor separated in the drying process of the organic waste. Added CO2And H2The amount of O is adjusted according to the purpose of synthesis of the synthesis gas.
The system comprises: organic waste pretreatment system, pyrolysis system, flue gas treatment system and CO2The system comprises a storage device, a gasification reforming system, a synthesis gas purification system, a methanol synthesis system and an organic waste recycling system.
The output end of the organic waste pretreatment system is simultaneously connected with the pyrolysis system and the gasification reforming system, and the pyrolysis product output end and the CO of the pyrolysis system2The output end of the storage device is connected to the input end of the gasification reforming system, the output end of the gasification reforming system is connected with the input end of the synthesis gas purification system, the output end of the synthesis gas purification system is connected with the input end of the methanol synthesis system, the synthesized methanol product can be used for synthesizing organic chemicals such as olefin and acetic acid, and further used for producing organic materials such as plastic and rubber, the organic materials enter an organic waste recovery system after being discarded, and the recovery system is connected with the pretreatment system to form a hydrocarbon recycling system.
In a second aspect, the present invention provides a method and system for recycling hydrogen by producing ammonia synthesis gas from organic waste.
The method comprises the following steps: firstly, carrying out pretreatment such as drying and coarse crushing on organic wastes, collecting water vapor generated in the drying process, and pyrolyzing the pretreated organic wastes to obtain pyrolysis gas and coke powder; part of the pyrolysis gas is sent into a combustion furnace for combustion, heat is provided for the pyrolysis furnace, and the coke powder can be collected and used for producing carbon products; introducing pyrolysis gas of pyrolysis products and steam generated in the dehydration and drying process of organic waste into a gasification reforming furnace for gasification reforming, and reacting to generate hydrogen and other gases; obtaining hydrogen and other gases through gas separation; synthesizing ammonia from nitrogen obtained by separating hydrogen from air; the ammonia can be used for producing organic raw materials such as urea and the like and further synthesizing other chemical products; the recycling of hydrogen can be realized by adopting the method after the organic products and the derived products thereof are used and discarded.
The system comprises: the system comprises an organic waste pretreatment system, a pyrolysis system, a flue gas treatment system, a gasification reforming system, a hydrogen separation system, an air separation system, a synthetic ammonia system and an organic waste recycling system.
The output end of the organic waste pretreatment system is simultaneously connected with the pyrolysis system and the gasification reforming system, the pyrolysis gas output end of the pyrolysis system is connected with the gasification reforming system, the gas output end of the gasification reforming system is connected with the input end of the hydrogen separation system, the hydrogen output end of the hydrogen separation system is connected with the hydrogen input end of the ammonia synthesis system, the nitrogen output end of the air separation system is connected with the nitrogen input end of the ammonia synthesis system, and ammonia prepared by the ammonia synthesis system can be used as a raw material to synthesize other organic products; and after the organic products and the derived products are discarded, the organic products and the derived products enter an organic waste recycling system, and the recycling system is connected with the pretreatment system to form a hydrogen recycling system.
The present invention is described in further detail below with reference to specific examples, which are intended to be illustrative of the invention and not limiting.
Example 1
As shown in fig. 2, the system for recycling hydrocarbon by using organic waste to prepare methanol synthesis gas disclosed in this embodiment includes: organic waste pretreatment system, pyrolysis system, flue gas treatment system and CO2The system comprises a storage device, a gasification reforming system, a synthesis gas purification system, a methanol synthesis system and an organic waste recycling system.
The organic waste enters an organic waste pretreatment system, is coarsely crushed by a crusher 1 and is dried by a dryer 2, and then dry raw materials output by the organic waste pretreatment system are connected with an input end of a pyrolysis system and enter a pyrolysis furnace 3; h collected in organic waste pretreatment system2The O is connected with the input end of the gasification reforming system and enters a gasification reforming furnace 7; partial pyrolysis gas of pyrolysis products of the pyrolysis furnace 3 enters the combustion furnace 4 to be combustedBurning, and discharging the generated flue gas from a chimney 10 through a dust remover 8 and a desulfurizing tower 9; CO 22The output end of the storage device 5 is connected with the input end of the carbon powder gasification furnace 6, and CO is2The carbon powder and the pyrolysis product coke powder enter a carbon powder gasification furnace 6 together for gasification; the gasification product CO and pyrolysis product pyrolysis gas enter a gasification reforming furnace 7; the synthesis gas output by the gasification reforming furnace 7 is connected with the input end of a synthesis gas purification system 11, the gas output by the synthesis gas purification system 11 is compressed by a first compressor 12, then enters a methanol synthesis tower 13, then enters a separator 14, the separated part of the gas enters a second compressor 15 again for circulation, the other output end of the separator 14 is connected with the input end of a light component removal tower 16 for light component removal, the light component removal process is carried out, the distillation tower 17 is connected after the light component removal, the methanol is output, and finally the methanol is used as a raw material for synthesizing organic materials; the organic materials are used and discarded and then are connected to an organic waste recycling system.
Example 2
As shown in fig. 3, the system for recycling hydrogen by using organic waste to prepare ammonia synthesis gas disclosed in this embodiment includes: the system comprises an organic waste pretreatment system, a pyrolysis system, a flue gas treatment system, a gasification reforming system, a gas separation system, an air separation system, a synthetic ammonia system and an organic waste recycling system.
The organic waste enters an organic waste pretreatment system, is coarsely crushed by a crusher 1 and is dried by a dryer 2, and then dry raw materials output by the organic waste pretreatment system are connected with an input end of a pyrolysis system and enter a pyrolysis furnace 3; h collected in organic waste pretreatment system2The O is connected with the input end of the gasification reforming system and enters a gasification reforming furnace 7; part of pyrolysis product pyrolysis gas of the pyrolysis furnace 3 enters the combustion furnace 4 for combustion, and generated flue gas is discharged from a chimney 10 after being treated by a dust remover 8 and a desulfurizing tower 9; pyrolysis product pyrolysis gas enters the input end of the gasification reforming system and enters a gasification reforming furnace 7; after the synthesis gas output by the gasification reforming furnace 7 is separated by a reforming raw material gas compressor 18, a filter 19, a heater 20 and a gas separation device 21, the hydrogen output end is connected with the hydrogen input end of an ammonia synthesis system and enters a hydrogen compressor 24; in space division system, airThe gas enters an air compressor 22 and an air separation rectifying tower 23 in sequence to generate nitrogen and oxygen, the oxygen is collected to an oxygen collecting device through an oxygen output end, and the nitrogen enters a nitrogen compressor 25 in an ammonia synthesis system through a nitrogen output end; hydrogen output by the hydrogen compressor 24 and nitrogen output by the nitrogen compressor 25 enter a washing tower 26, and then enter an ammonia synthesis tower 29 through a heat exchanger 27 and an ammonia synthesis gas compressor 28 to carry out ammonia synthesis reaction; the ammonia generated by the ammonia synthesis tower 29 enters the heat exchanger 27 again for circulation on one hand, and enters the ammonia storage device 30 for storage on the other hand, and the ammonia in the ammonia storage device 30 is used as a raw material for synthesizing organic products; the organic products and the derived products thereof are connected to an organic waste recycling system after being used and discarded.
Wherein, the organic products comprise organic materials and fertilizers, and the derived products mainly refer to straws and the like.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and equivalents can be made in the technical solutions described in the foregoing embodiments, or equivalents thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method for realizing cyclic utilization of hydrocarbon by utilizing organic wastes is characterized by comprising the following steps:
carrying out coarse crushing, drying and pyrolysis on the organic waste to generate pyrolysis products such as carbon powder, pyrolysis gas and the like;
the pyrolysis product, captured CO2Gasifying and reforming the dried steam to generate synthesis gas;
producing methanol or ammonia by taking the synthesis gas as a raw material;
methanol and ammonia are used as raw materials to synthesize organic products, and the organic products and derivative products thereof are recycled after being used and discarded and then recycled by the method;
the synthesis gas is CO, H2Is mainly composed of。
2. A system for realizing hydrocarbon recycling by utilizing organic wastes is characterized by comprising: organic waste pretreatment system, pyrolysis system, flue gas treatment system and CO2The system comprises a storage device, a gasification reforming system, a synthesis gas purification system, a gas separation system, an air separation system, a methanol synthesis system, an ammonia synthesis system and an organic waste recycling system;
the material outlet of the organic waste pretreatment system is connected with the material inlet of the pyrolysis system, and the pyrolysis product outlet of the pyrolysis system is connected with the gas inlet of the gasification reforming system;
the gas inlet of the gasification reforming system is also connected with the steam outlet of the organic waste pretreatment system, and the gas inlet of the gasification reforming system is also connected with CO2The air outlets of the storage devices are connected;
the gas outlet of the gasification reforming system is connected with the gas inlet of the synthesis gas purification system or the gas inlet of the gas separation device;
the gas outlet of the synthesis gas purification system is connected with the methanol synthesis system;
the hydrogen outlet of the gas separation system is connected with the hydrogen inlet of the ammonia synthesis system;
and a material inlet of the organic waste pretreatment system is connected with a material outlet of the organic waste recycling system.
3. The system for recycling hydrocarbon by using organic waste as claimed in claim 2, wherein the pyrolysis gas outlet of the pyrolysis device is connected with the gas inlet of the combustion furnace.
4. The system for recycling hydrocarbon by utilizing organic waste as claimed in claim 3, wherein the flue gas outlet of the combustion furnace is connected with a flue gas treatment system.
5. The system for recycling hydrocarbon by utilizing organic waste as claimed in claim 4, wherein the flue gas treatment system comprises: a dust remover, a desulfurizing tower and a chimney; and the dust remover, the desulfurizing tower and the gas conveying channel of the chimney are sequentially connected.
6. The system for recycling hydrocarbon by using organic waste as claimed in claim 2, wherein the methanol synthesis system comprises: a methanol synthesis tower, a separator, a light component removal tower and a rectifying tower; the material outlet of the methanol synthesis tower is connected with the inlet of the separator, the first gas outlet of the separator is connected with the raw material gas inlet of the light component removal tower, and the material outlet of the light component removal tower is connected with the material inlet of the rectifying tower.
7. The system for recycling hydrocarbon by using organic waste as claimed in claim 6, wherein the second gas outlet of the separator is connected to the gas inlet of the methanol synthesis tower.
8. The system for recycling hydrocarbon by utilizing organic waste as claimed in claim 2, wherein the nitrogen inlet of the ammonia synthesis system is connected with the nitrogen outlet of the air separation system.
9. The system for recycling hydrocarbon by using organic waste as claimed in claim 2, wherein the recycling system for organic waste comprises: organic industrial solid waste, household garbage, agricultural straw recycling system, and organic products and their derived products recycling system produced by the system of claims 2-9.
10. Use of the system for recycling hydrocarbons from organic waste according to any one of claims 2 to 9 in the fields of energy, chemical engineering and recycling economy.
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| CN202111033657.4A CN113717744A (en) | 2021-09-03 | 2021-09-03 | Method and system for realizing cyclic utilization of hydrocarbon by using organic waste |
| PCT/CN2021/123343 WO2023029151A1 (en) | 2021-09-03 | 2021-10-12 | Method and system for realizing cyclic utilization of carbon‐hydrogen by using organic wastes |
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| CN115784840A (en) * | 2022-12-05 | 2023-03-14 | 山东省科学院能源研究所 | Methanol preparation process coupling organic solid waste gasification and water electrolysis hydrogen production |
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| CN116554931B (en) * | 2023-05-11 | 2024-02-09 | 中鹏未来有限公司 | A hydrogen production process through carbonization and gasification of domestic waste |
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