CN212316043U - High-calorific-value solid waste gasification hydrogen production system - Google Patents

Abstract

The utility model relates to the technical field of solid waste treatment, in particular to a high-calorific-value solid waste gasification hydrogen production system, which comprises a solid waste pretreatment device, a solid waste gasification furnace, a cyclone separator, a waste heat boiler, a deacidification and dust removal device, a conversion device, a pressure swing adsorption device, a hydrogen storage tank, a mixer, an oxygen generation device, a material returning device, a slag removal device, an ash conveying device, a residual carbon incinerator, a flue gas purification device and a chimney; the system takes industrial solid wastes such as domestic sludge, waste wood, waste paper residues, textiles, rubber (waste tires), leather, plastic and the like as raw materials, converts low-grade wastes into high-grade hydrogen energy, and has the advantages of strong raw material adaptability, high energy conversion rate, high hydrogen yield, no secondary pollution and the like. Compared with the prior art, the hydrogen production system has the advantages that the solid waste can be recycled, reduced and harmless, high-quality green energy hydrogen can be produced, the hydrogen production system has the characteristics of clean production and circular economy, the hydrogen production system is used as a new solid waste treatment way, the solid waste is changed into valuable, and the resource utilization efficiency can be improved.

Description

High-calorific-value solid waste gasification hydrogen production system

Technical Field

The utility model relates to a solid useless processing technology field, concretely relates to high calorific value solid waste gasification hydrogen manufacturing system.

Background

With the development of economy and society, solid waste is increasing day by day, and great threat is caused to the ecological environment. The treatment of high-calorific-value industrial solid wastes such as domestic sludge, waste wood, waste paper residues, textiles, rubber (waste tires), leather, plastic and the like is limited to direct landfill and incineration, and the treatment mode is backward and the utilization efficiency is low.

On the other hand, the conventional fossil fuels are becoming exhausted, the energy exploitation and utilization methods are lagging, the ecological environment is seriously damaged, and the development of renewable energy sources is becoming a trend. The hydrogen in the renewable energy has the advantages of stable combustion, zero emission, high heat value, easy storage and transportation and the like, and can be used as high-quality green energy for recycling. At present, hydrogen is mainly from hydrogen production by fossil fuel and hydrogen production by water electrolysis, secondary pollution exists in the hydrogen production technology by fossil fuel such as hydrogen production by coal, hydrogen production by natural gas, hydrogen production by industrial byproduct gas and the like, and a large amount of electric energy is consumed for hydrogen production by water electrolysis. The emerging biomass gasification hydrogen production technology can realize clean utilization of energy, but has the defects of low conversion rate, high energy consumption, poor raw material adaptability and the like, and can not treat industrial solid wastes.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high calorific value solid waste gasification hydrogen manufacturing system to current not enough to industrial solid waste such as domestic sludge, wood waste, wastepaper sediment, fabrics, rubber (junked tire), leather and plastic are the raw materials, turn into the high-grade hydrogen energy with low-grade discarded object.

The purpose of the utility model is realized through the following technical scheme: the present application provides

A high-calorific-value solid waste gasification hydrogen production system comprises a solid waste pretreatment device, a solid waste gasification furnace, a cyclone separator, a waste heat boiler, a deacidification and dust removal device, a conversion device, a pressure swing adsorption device, a hydrogen storage tank, a mixer, an oxygen production device, a material returning device and a slag removal device; the discharge port of the solid waste pretreatment device is communicated with the hearth of the solid waste gasification furnace, the slag discharge port of the solid waste gasification furnace is communicated with the slag removal device, the gas production port of the oxygen generation device is communicated with the mixer, the outlet of the mixer is communicated with the hearth of the solid waste gasification furnace, the gas exhaust port of the solid waste gasification furnace is communicated with the cyclone separator, the lower port of the cyclone separator is communicated with the material returning device, the material returning device is communicated with the hearth of the solid waste gasification furnace, the upper port of the cyclone separator is communicated with the hearth of the waste heat boiler, the gas production port of the waste heat boiler is communicated with the mixer, the gas exhaust port of the waste heat boiler is communicated with the deacidification and dust removal device, the deacidification and dust removal device is communicated with the conversion device, the conversion device is communicated with.

Wherein, still include defeated grey device and carbon residue incinerator, defeated grey device communicates with deacidification dust collector's dust exhaust mouth, and defeated grey device's export communicates with carbon residue incinerator's furnace, and carbon residue incinerator's steam production mouth communicates with conversion equipment.

Wherein, still include gas cleaning device and chimney, gas cleaning device and the gas vent intercommunication of carbon residue incinerator, gas cleaning device's export and chimney intercommunication.

The utility model has the advantages that: compared with the prior art, the high-calorific-value solid waste gasification hydrogen production system can realize recycling, reduction and harmlessness of solid wastes, can produce high-quality green energy hydrogen, has the characteristics of clean production and circular economy, is used as a new solid waste treatment way, changes solid wastes into valuables, and can improve the utilization efficiency of resources.

Drawings

FIG. 1 is a flow diagram of a high calorific value solid waste gasification hydrogen production system.

Reference numerals: the device comprises a solid waste pretreatment device 1, a solid waste gasification furnace 2, a cyclone separator 3, a material returning device 4, a deslagging device 5, a mixer 6, an oxygen generating device 7, a waste heat boiler 8, a deacidification and dedusting device 9, a conversion device 10, a pressure swing adsorption device 11, a hydrogen storage tank 12, an ash conveying device 13, a residual carbon incinerator 14, a flue gas purification device 15 and a chimney 16.

Detailed Description

The invention will be further described with reference to the following examples.

The utility model discloses a specific implementation mode of a high heating value solid waste gasification hydrogen production system, please see figure 1, including solid waste pretreatment device 1, solid waste gasification furnace 2, cyclone 3, exhaust-heat boiler 8, deacidification dust collector 9, conversion equipment 10, pressure swing adsorption equipment 11, hydrogen storage tank 12, mixer 6, oxygenerator 7, material returning device 4 and dross removal mechanism 5; the discharge port of the solid waste pretreatment device 1 is communicated with the hearth of the solid waste gasification furnace 2, the slag discharge port of the solid waste gasification furnace 2 is communicated with the slag removal device 5, the gas production port of the oxygen generation device 7 is communicated with the mixer 6, the outlet of the mixer 6 is communicated with the hearth of the solid waste gasification furnace 2, the exhaust port of the solid waste gasification furnace 2 is communicated with the cyclone separator 3, the lower port of the cyclone separator 3 is communicated with the material return device 4, the material return device 4 is communicated with the hearth of the solid waste gasification furnace 2, the upper port of the cyclone separator 3 is communicated with the hearth of the waste heat boiler 8, the gas production port of the waste heat boiler 8 is communicated with the mixer 6, the exhaust port of the waste heat boiler 8 is communicated with the deacidification and dust removal device 9, the deacidification and dust removal device 9 is communicated with the conversion device 10, the conversion device 10 is communicated with the pressure swing adsorption device.

The utility model discloses a high calorific value solid waste gasification hydrogen manufacturing system's working process: the high-calorific-value industrial solid waste is screened and crushed into solid waste particles f with certain particle sizes in the solid waste pretreatment device 1, the solid waste particles f are sent to the middle of a hearth of the solid waste gasification furnace 2, are mixed with a gasification agent g1 preheated at high temperature, pyrolysis gasification reaction is completed in a high-temperature environment, generated synthesis gas g2 is led out from the top of the solid waste gasification furnace 2, and a small amount of generated slag w1 is discharged from a slag removal device 5 at the bottom of the solid waste gasification furnace 2. The synthesis gas g2 mainly comprises CO 46-46%, H2-33%, CO 2-20% and CH 4-1%, and after fly ash carried by the synthesis gas g2 is separated by a cyclone separator 3, coarse ash a1 returns to the solid waste gasification furnace 2 through a material returning device 4 to participate in the gasification reaction in the furnace again; the fine ash a2 enters the waste heat boiler 8 with the syngas g 2. Cooling the high-temperature synthesis gas g2 to below 500 ℃ in the waste heat boiler 8, and simultaneously generating high-temperature steam s1 at above 450 ℃; the high-temperature steam s1 and oxygen o generated by the oxygen generator 7 are mixed in the mixer 6 to generate a gasifying agent g1, and the gasifying agent g is sent into the hearth of the solid waste gasification furnace 2 to participate in gasification reaction.

In this embodiment, the hydrogen production system further includes an ash conveying device 13, a residual carbon incinerator 14, a flue gas purification device 15, and a chimney 16. The ash conveying device 13 is communicated with a dust discharging port of the deacidification and dust removal device 9, an outlet of the ash conveying device 13 is communicated with a hearth of the residual carbon incinerator 14, and a steam generating port of the residual carbon incinerator 14 is communicated with the conversion device 10. The flue gas purification device 15 is communicated with the exhaust port of the residual carbon incinerator 14, and the outlet of the flue gas purification device 15 is communicated with the chimney 16.

In this embodiment, the synthesis gas g2 from the exhaust-heat boiler 8 enters the deacidification and dedusting device 9 to remove acidic substances, dioxin and fine ash a 2. The removed fine ash a2 is sent to the carbon residue incinerator 14 by the ash conveying device 13 to be burnt out, the carbon content is reduced to below 5 percent from 20 percent, and the heat generated by combustion is converted to generate medium temperature steam s2 at about 350 ℃. The flue gas w2 discharged from the residual carbon incinerator 14 mainly comprises CO2, N2, H2O, a small amount of SO2 and dust, and is discharged by a chimney 16 after being desulfurized and dedusted by a flue gas purification device 15. The synthesis gas g2 from the deacidification and dust removal device 9 enters a conversion device 10, and is subjected to conversion reaction with medium-temperature steam s2 to convert CO contained in the synthesis gas g 3578 into H2, and the obtained conversion gas g3 mainly comprises H2-55%, CO 2-43%, CH 4-1% and CO-1%. Finally, the converted gas g3 passes through a PSA pressure swing adsorption device 11 to obtain hydrogen h with the purity of more than or equal to 99.9 percent, and the hydrogen h is stored in a hydrogen storage tank 12 and supplied to downstream users as required.

In the embodiment, the high-calorific-value industrial solid waste is prepared by mixing domestic sludge, waste wood, waste paper residues, textiles, rubber (waste tires), leather, plastic and the like according to a certain proportion, the average calorific value is about 3200kcal/kg, and the raw material adaptability of the whole system is strong. The solid waste gasification furnace 2 adopts a high-temperature pure oxygen gasification technology, the coarse ash a1 carried by the synthesis gas g2 directly returns to the furnace to continuously participate in gasification reaction, the fine ash a2 is collected and then sent to the carbon residue incinerator 14 to be burnt out, and medium-temperature steam s2 is generated to participate in conversion reaction, so that the whole system has high energy conversion efficiency, high hydrogen yield and no secondary pollution. Compared with the prior art, the hydrogen production system has the advantages that the solid waste can be recycled, reduced and harmless, high-quality green energy hydrogen can be produced, the hydrogen production system has the characteristics of clean production and circular economy, the hydrogen production system is used as a new solid waste treatment way, the solid waste is changed into valuable, and the resource utilization efficiency can be improved.

The above embodiments are only used for the explanation of the technical solution of the present invention, and can not be taken as the limitation of the structure of the present invention. Through this embodiment, the technical mode that also can obtain equal result of use through simple modification or equivalent replacement can be seen by ordinary skilled person and falls into the utility model discloses the right protection scope of technique.

Claims (3)

1. A high heating value solid waste gasification hydrogen production system is characterized in that: the system comprises a solid waste pretreatment device, a solid waste gasification furnace, a cyclone separator, a waste heat boiler, a deacidification and dust removal device, a conversion device, a pressure swing adsorption device, a hydrogen storage tank, a mixer, an oxygen generation device, a material returning device and a slag removal device;

the system comprises a solid waste pretreatment device, a solid waste gasification furnace, a slag removal device, an oxygen generation device, a mixer, a cyclone separator, a return device, a pressure swing adsorption device and a hydrogen storage tank, wherein a discharge port of the solid waste pretreatment device is communicated with a hearth of the solid waste gasification furnace, a slag discharge port of the solid waste gasification furnace is communicated with the slag removal device, a gas generation port of the oxygen generation device is communicated with the mixer, an outlet of the mixer is communicated with the hearth of the solid waste gasification furnace, a gas exhaust port of the solid waste gasification furnace is communicated with the cyclone separator, a lower port of the cyclone separator is communicated with the return device, the return device is communicated with the hearth of the solid waste gasification furnace, an upper port of the cyclone separator is communicated with the hearth of a waste heat boiler, a gas generation port of the waste heat boiler is communicated with the mixer, a gas exhaust port.

2. The system for producing hydrogen by gasifying solid waste with high calorific value according to claim 1, wherein: the device comprises a deacidification and dedusting device, a hearth of the carbon residue incinerator and a steam generating port of the carbon residue incinerator, and is characterized by further comprising an ash conveying device and a carbon residue incinerator, wherein the ash conveying device is communicated with a dust exhaust port of the deacidification and dedusting device, an outlet of the ash conveying device is communicated with the hearth of the carbon residue incinerator, and the steam generating port of the carbon residue incinerator is communicated with a conversion device.

3. The high calorific value solid waste gasification hydrogen production system according to claim 2, wherein: the device is characterized by further comprising a flue gas purification device and a chimney, wherein the flue gas purification device is communicated with an exhaust port of the residual carbon incinerator, and an outlet of the flue gas purification device is communicated with the chimney.

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