CN213680557U - Gasification co-processing system of polymorphic discarded object - Google Patents
Gasification co-processing system of polymorphic discarded object Download PDFInfo
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- CN213680557U CN213680557U CN202022392971.9U CN202022392971U CN213680557U CN 213680557 U CN213680557 U CN 213680557U CN 202022392971 U CN202022392971 U CN 202022392971U CN 213680557 U CN213680557 U CN 213680557U
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Abstract
The utility model discloses a gasification cooperative treatment system for polymorphic waste, which comprises a pretreatment unit, a mixing unit and a gasification treatment unit; the pretreatment unit comprises a raw material coal, solid waste, semi-solid waste crushing, semi-solid waste melting and liquid waste pretreatment unit, the raw material coal, solid waste and semi-solid waste crushing pretreatment unit comprises a storage bin, a crushing device and a screening device, the semi-solid waste melting pretreatment unit comprises a heating device, a filtering device and a melting tank, and the liquid waste pretreatment unit comprises a liquid waste storage tank; the mixing unit comprises a mill connected with the pretreatment unit and a coal slurry tank connected with the gasification treatment unit; the gasification treatment unit comprises a gasification furnace connected with the coal slurry tank. The utility model discloses make the coal slurry and carry out gasification after mixing polymorphic discarded object and raw materials coal, realized the clean processing and the resource utilization of polymorphic discarded object.
Description
Technical Field
The utility model belongs to the technical field of the waste treatment technique and specifically relates to a gasification coprocessing system of polymorphic discarded object is related to.
Background
In recent years, with the rapid development of economy, the generation amount of various wastes in China generally shows an increasing trend. In the prior art, because solid waste, semi-solid waste and liquid waste have different characteristics, different treatment methods are generally adopted for separate treatment, and liquid waste is generally discharged after biochemical combined treatment, for example, the publication of "a paper-making wastewater advanced treatment system" in the Chinese patent literature has a publication number of CN104529090A, which includes a wastewater conditioning filter tank, an oxidation reaction sedimentation tank, a baffled anoxic-anaerobic reaction tank, an aerobic contact oxidation tank, a secondary sedimentation tank and a sand filter tank. The wastewater is adjusted in water quantity and water quality by the adjusting filter tank, then enters the oxidation reaction sedimentation tank, the pollutants are oxidized and decomposed, then enters the baffled anoxic-anaerobic reaction tank and the aerobic contact oxidation tank for anoxic, anaerobic and aerobic reactions, and is discharged after reaching the standard after being precipitated and filtered. Solid and semi-solid wastes are generally treated by incineration, landfill, etc., for example, in the publication of "a petrochemical solid waste incineration system" in chinese patent document, publication No. CN206018650U includes an incinerator and a mixing device, the mixing device is connected to a solid waste feeding pipe, and the outlet end of the mixing device is connected to a feeding port of a primary combustion zone of the incinerator.
However, the existing waste treatment method cannot utilize the waste as resources, and secondary pollution is easy to generate in the treatment process of solid waste such as incineration, clean landfill and the like, so that harmless treatment cannot be really realized.
Disclosure of Invention
The utility model relates to an overcome prior art's waste treatment method, can't carry out resource utilization to the discarded object, and easily produce secondary pollution in the processing procedure of solid waste such as burning, clean landfill, can't really realize innocent treatment's problem, provide a gasification concurrent processing system of polymorphic discarded object, mix solid-state, semi-solid-state, liquid discarded object and the coal of multisource, utilize the combined action between the different form discarded object to make the coal slurry, the coal slurry that makes obtains after gasifier gasification and contains CO, H2The synthesis gas of the gas is subjected to subsequent resource utilization, so that resource utilization and harmless treatment of wastes are realized, secondary pollution is avoided, and the method is economical and practical and has better economic benefit and environmental protection value.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a gasification cooperative treatment system for polymorphic waste comprises a pretreatment unit, a mixing unit and a gasification treatment unit which are connected in sequence; the pretreatment unit comprises a raw material coal pretreatment unit, a solid waste pretreatment unit, a semi-solid waste crushing pretreatment unit, a semi-solid waste melting pretreatment unit and a liquid waste pretreatment unit which operate independently, the raw material coal pretreatment unit, the solid waste pretreatment unit and the semi-solid waste crushing pretreatment unit respectively comprise a storage bin, a crushing device and a screening device which are connected in sequence, the semi-solid waste melting pretreatment unit comprises a heating device, a filtering device and a melting tank which are connected in sequence, and the liquid waste pretreatment unit comprises a liquid waste storage tank; the mixing unit comprises a mill and a coal slurry tank which are connected, the mill is connected with the pretreatment unit, and the coal slurry tank is connected with the gasification treatment unit; the gasification treatment unit comprises a gasification furnace connected with the coal slurry tank.
The utility model discloses earlier through the pretreatment unit, according to the physics and chemistry characteristics of different form discarded object, carry out different preliminary treatment to discarded object and raw materials coal respectively: crushing and screening the raw material coal by a device to obtain coal powder with required particle size; solid and semi-solid waste to be crushed is crushed and screened into solid and semi-solid waste powder; after the semi-solid waste to be melted passes through a heater and a filter, the semi-solid waste to be melted is obtained and then enters a melting tank for storage; homogenizing the liquid waste through a liquid waste storage tank; then the pretreated coal powder, solid and semi-solid waste powder, molten waste and liquid waste enter a mixing unit together, the mixture enters a mill to mix abrasive materials, then enters a coal slurry tank to be stirred and mixed uniformly, the reaction and compatibility between the polymorphic waste and raw material coal are utilized to prepare coal water slurry with good solid content, dispersibility and fluidity, the prepared coal water slurry enters a gasification furnace of a gasification treatment unit to be gasified and combusted, and CO and H are obtained2The synthesis gas of gases such as the synthesis gas is the important raw material of chemical synthesis processes such as synthetic ammonia, synthetic methanol, etc., consequently utilize the utility model provides a system can realize the resource utilization and the innocent treatment of the discarded object of different states and source, no secondary pollution, economical and practical has better economic benefits and environmental protection value.
Wherein the waste which can enter the solid waste pretreatment unit comprises solid dried sludge, dry distillation oil sludge, waste rubber and the like; the waste which can enter the semi-solid waste crushing pretreatment unit comprises dregs of a decoction, waste biomass and the like; the waste which can enter the semi-solid waste melting pretreatment unit comprises oil tank sludge, rectification residual liquid and the like; the waste which can enter the liquid waste pretreatment unit comprises printing and dyeing wastewater, COD wastewater and other industrial and domestic sewage. After the polymorphic waste is mixed with the coal powder, the carbon-hydrogen-containing component in the polymorphic waste can provide CO and H2The effective gas components are equal, the slurry concentration of the coal water slurry is improved, and therefore the effective gas content of the gasified coal water slurry is improved; the liquid waste contains a plurality of organic matter components which can be used as a surfactant and can be used as a dispersant when added into the coal water slurry; meanwhile, different solid, semi-solid (crushing/melting) and liquid wastes can be reasonably compounded according to the composition of the polymorphic wastes, so that the components in the wastes react to generate a dispersing agent with a good dispersing effect, the effective utilization of the wastes is realized through waste and waste matching, the dispersibility and the stability of the prepared coal water slurry are improved, and the transportation and the subsequent gasification treatment of the coal water slurry are facilitated.
Therefore, the utility model makes full use of the physicochemical characteristics of the polymorphic waste, mixes the polymorphic waste and the raw material coal to prepare the coal water slurry with good use performance, and the final waste can enter the gasification furnace along with the prepared coal water slurry to be treated, so that carbon and hydrogen elements in the waste are changed into CO and H2And the like, and simultaneously decomposes or solidifies harmful substances in the waste into the glassy slag, so that the clean disposal and resource utilization of the polymorphic waste are realized, and the method is a brand-new waste disposal mode which is environment-friendly, energy-saving and capable of changing waste into valuable.
Preferably, the gasification furnace comprises a combustion chamber, a chilling chamber and a lock hopper which are sequentially communicated from top to bottom, and the top of the combustion chamber is provided with a feed inlet connected with the coal slurry tank. The coal water slurry prepared from polymorphic waste is gasified in a combustion chamber of a gasification furnace, the generated liquid slag enters a chilling chamber, forms glassy slag after chilling and solidification, wraps harmful substances such as heavy metal and the like which are difficult to degrade, and then enters a slag pool for collection after being cooled and crushed by a lock hopper, and the leaching toxicity of the glassy slag in the slag pool meets the discharge standard, so that harmless treatment is realized.
Preferably, a chilling water inlet is arranged above a chilling chamber of the gasification furnace, a synthetic gas outlet is arranged below the chilling chamber, and the gasification processing unit further comprises a separator, a cyclone dust collector and a washing tower which are sequentially connected with the gasification furnace; the separator is provided with a separator feed inlet, a separator water outlet positioned at the bottom of the separator and a separator air outlet positioned at the top of the separator; the cyclone dust collector is provided with a cyclone dust collector feeding hole, a cyclone dust collector water outlet positioned at the bottom of the cyclone dust collector and a cyclone dust collector air outlet positioned at the top of the cyclone dust collector; the bottom of the washing tower is provided with a synthesis gas inlet, an ash water outlet and a chilling water outlet, and the top of the washing tower is provided with a washing water inlet and a clean gas outlet; the synthetic gas outlet on the chilling chamber of the gasification furnace is connected with the feed inlet of the separator, the gas outlet of the separator is connected with the feed inlet of the cyclone dust collector, the gas outlet of the cyclone dust collector is connected with the synthetic gas inlet on the washing tower, and the chilling water outlet on the washing tower is connected with the chilling water inlet on the chilling chamber of the gasification furnace.
The utility model is provided with a separator, a cyclone dust collector and a washing tower in the gasification treatment unit, the synthesis gas generated in the gasification furnace is subjected to gas-liquid separation by the separator, the obtained gas enters the cyclone dust collector to further remove particles, the gas after dust removal by the cyclone dust collector enters the washing tower, and after further purification and dust removal under the action of washing liquid, clean synthesis gas is obtained, and the synthesis gas can be subsequently utilized after collection; the washing liquid part washed in the washing tower is taken as chilling water to enter a chilling chamber of the gasification furnace, and the liquid slag is chilled; part of the grey water obtained by separation in the separator, the cyclone dust collector and the washing tower can enter the pretreatment unit again for reuse, and part of the grey water enters a sewage treatment plant for treatment and then is discharged. The utility model discloses set up scrubbing tower, separator and cyclone in gasification processing unit, can further separate and purify the synthetic gas that produces, the follow-up utilization and the processing of the gasification result of being convenient for.
Preferably, the mixing unit further comprises an additive storage tank and a water storage tank which are respectively connected with the mill. The additive storage tank and the water storage tank which are connected with the mill are arranged in the mixing unit, a certain amount of additive and water can be added into the mill according to the compatibility of different wastes, the crushing effect is facilitated, the dispersibility and the stability of the prepared coal water slurry are improved, and the transportation, the storage and the subsequent gasification treatment of the coal water slurry are facilitated.
Preferably, a stirring device is arranged in the coal slurry tank.
Preferably, the mill in the mixing unit is a rod mill. The rod mill can effectively crush the raw material coal and the solid wastes to the required particle size, and is convenient for controlling the quality of the prepared water-coal-slurry.
Preferably, a coal slurry pump is arranged on a pipeline between the coal slurry tank and the gasification furnace.
Therefore, the utility model discloses following beneficial effect has:
(1) according to the physicochemical characteristics of polymorphic wastes, the wastes are respectively pretreated in a pretreatment unit, the pretreated polymorphic wastes and coal powder are mixed in a mixing unit to prepare the coal water slurry with better solid content, dispersibility and fluidity, the prepared coal water slurry enters a gasification furnace of a gasification treatment unit for gasification and combustion to obtain recyclable synthesis gas, and the resource utilization and harmless treatment of the wastes from different sources are realized;
(2) a separator, a cyclone dust collector and a washing tower are arranged in the gasification treatment unit, so that the generated synthesis gas can be further separated and purified, and the subsequent utilization and treatment of the gasification product are facilitated.
Drawings
Fig. 1 is a schematic view of a connection structure of the present invention.
In the figure: 1 raw material coal pretreatment unit, 101 storage bin, 102 crushing device, 103 sieving device, 2 solid waste pretreatment unit, 3 semi-solid waste crushing pretreatment unit, 4 semi-solid waste melting pretreatment unit, 401 heating device, 402 filtering device, 403 melting tank, 5 liquid waste storage tank, 6 mill, 7 coal slurry tank, 8 gasification furnace, 801 combustion chamber, 802 chilling chamber, 803 lock hopper, 804 feed inlet, 805 chilling water inlet, 806 synthetic gas outlet, 9 washing tower, 901 synthetic gas inlet, 902 grey water outlet, 903 washing water inlet, 904 clean gas outlet, 905 chilling water outlet, 10 separator, 1001 separator feed inlet, 1002 separator water outlet, 1003 separator gas outlet, 11 cyclone dust collector, 1101 cyclone dust collector feed inlet, 1003 cyclone dust collector feed inlet, A water outlet of a 1102 cyclone dust collector, an air outlet of a 1103 cyclone dust collector, a 12 additive storage tank, a 13 water storage tank, a 14 stirring device and a 15 coal slurry pump.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
Example (b):
as shown in fig. 1, a system for gasification and co-processing polymorphic waste comprises a pretreatment unit, a mixing unit and a gasification unit, which are connected in sequence.
The pretreatment unit comprises a raw material coal pretreatment unit 1, a solid waste pretreatment unit 2, a semi-solid waste crushing pretreatment unit 3, a semi-solid waste melting pretreatment unit 4 and a liquid waste pretreatment unit which are operated independently. The raw material coal pretreatment unit, the solid waste pretreatment unit and the semi-solid waste crushing pretreatment unit respectively comprise a storage bin 101, a crushing device 102 and a screening device 103 which are connected in sequence through a belt conveying device; the semi-solid waste melting pretreatment unit comprises a heating device 401, a filtering device 402 and a melting tank 403 which are connected in sequence through pipelines; the liquid waste pre-treatment unit comprises a liquid waste reservoir 5.
The mixing unit comprises a mill 6 and a coal slurry tank 7 which are connected through a pipeline, and an additive storage tank 12 and a water storage tank 13 which are respectively connected with the mill. The grinder adopts a rod grinder which is respectively connected with a raw material coal pretreatment unit, a solid waste pretreatment unit, a screening device in a semi-solid waste crushing pretreatment unit, a melting tank in the semi-solid waste melting pretreatment unit and a liquid waste storage tank. A stirring device 14 is arranged in the coal slurry tank, and the coal slurry tank is connected with the gasification treatment unit.
The gasification treatment unit comprises a gasification furnace 8, a separator 10, a cyclone dust collector 11 and a washing tower 9 which are connected in sequence. The gasification furnace comprises a combustion chamber 801, a chilling chamber 802 and a lock bucket 803 which are sequentially communicated from top to bottom, the top of the combustion chamber is provided with a feed inlet 804 which is connected with a coal slurry tank through a pipeline, a coal slurry pump 15 is arranged on the pipeline between the feed inlet and the coal slurry tank, a chilling water inlet 805 is arranged above the chilling chamber, and a synthetic gas outlet 806 is arranged below the chilling chamber; the separator is provided with a separator feed inlet 1001, a separator water outlet 1002 positioned at the bottom of the separator and a separator gas outlet 1003 positioned at the top of the separator; the cyclone dust collector is provided with a cyclone dust collector feeding hole 1101, a cyclone dust collector water outlet 1102 positioned at the bottom of the cyclone dust collector and a cyclone dust collector air outlet 1103 positioned at the top of the cyclone dust collector; the bottom of the washing tower is provided with a synthesis gas inlet 901, a grey water outlet 902 and a chilling water outlet 905, and the top of the washing tower is provided with a washing water inlet 903 and a clean gas outlet 904; the synthetic gas outlet on the chilling chamber of the gasification furnace is connected with the feed inlet of the separator through a pipeline, the gas outlet of the separator is connected with the feed inlet of the cyclone dust collector through a pipeline, the gas outlet of the cyclone dust collector is connected with the synthetic gas inlet on the washing tower through a pipeline, and the chilling water outlet on the washing tower is connected with the chilling water inlet on the chilling chamber of the gasification furnace through a pipeline.
When the system in the utility model operates, the raw coal is crushed and screened by the screening device to obtain the coal powder with required particle size; solid and semi-solid waste to be crushed is crushed and screened into solid and semi-solid waste powder; after the semi-solid waste to be melted passes through a heater and a filter, the semi-solid waste to be melted is obtained and then enters a melting tank for storage; homogenizing the liquid waste through a liquid waste storage tank; then the pretreated coal powder, solid and semi-solid waste powder, molten waste and liquid waste enter a mixing unit together, the mixture enters a rod mill to be mixed with abrasive materials, and then enters a coal slurry tank to be uniformly stirred and mixed to obtain coal water slurry, and a proper amount of additive and water can be added according to the property of the waste when the coal water slurry is crushed in the rod mill; the prepared coal water slurry enters a combustion chamber of a gasification furnace under the action of a coal slurry pump for gasification and combustion, the combusted slag enters a chilling chamber and is chilled to obtain glassy slag, the glassy slag is cooled and crushed by a lock hopper and finally enters a slag pool for collection and discharge, and the leaching toxicity meets the discharge standard; after gas-liquid separation is carried out on the synthetic gas generated in the gasification furnace through a separator, the obtained gas enters a cyclone dust collector to further remove particles, the gas dedusted by the cyclone dust collector enters a washing tower, and after further purification and dust removal are carried out under the action of washing liquid, clean synthetic gas is obtained and can be subsequently utilized after collection; the washing liquid part washed in the washing tower is taken as chilling water to enter a chilling chamber of the gasification furnace, and the liquid slag is chilled; part of the grey water obtained by separation in the separator, the cyclone dust collector and the washing tower can enter the pretreatment unit again for reuse, and part of the grey water enters a sewage treatment plant for treatment and then is discharged.
The utility model discloses the physicochemical characteristics of make full use of polymorphic discarded object make the coal slurry that performance is good after polymorphic discarded object and raw materials coal mixture, and final discarded object can get into the gasifier along with the coal slurry that makes and handle, becomes carbon, hydrogen element in the discarded object CO and H2And the harmful substances in the waste are decomposed or solidified into the glassy slag by using useful gases, so that the clean disposal and resource utilization of the polymorphic waste are realized.
Claims (7)
1. A gasification cooperative treatment system for polymorphic waste is characterized by comprising a pretreatment unit, a mixing unit and a gasification treatment unit which are sequentially connected; the pretreatment unit comprises a raw material coal pretreatment unit (1), a solid waste pretreatment unit (2), a semi-solid waste crushing pretreatment unit (3), a semi-solid waste melting pretreatment unit (4) and a liquid waste pretreatment unit which operate independently, the raw material coal pretreatment unit, the solid waste pretreatment unit and the semi-solid waste crushing pretreatment unit respectively comprise a storage bin (101), a crushing device (102) and a screening device (103) which are connected in sequence, the semi-solid waste melting pretreatment unit comprises a heating device (401), a filtering device (402) and a melting tank (403) which are connected in sequence, and the liquid waste pretreatment unit comprises a liquid waste storage tank (5); the mixing unit comprises a mill (6) and a coal slurry tank (7) which are connected, the mill is connected with the pretreatment unit, and the coal slurry tank is connected with the gasification treatment unit; the gasification treatment unit comprises a gasification furnace (8) connected with the coal slurry tank.
2. The system for the gasification co-processing of polymorphic waste according to claim 1, wherein the gasifier comprises a combustion chamber (801), a chilling chamber (802) and a lock hopper (803) which are sequentially communicated from top to bottom, and a feed inlet (804) connected with a coal slurry tank is arranged at the top of the combustion chamber.
3. The system of claim 2, wherein a chilling water inlet (805) is provided above the chilling chamber of the gasification furnace, a syngas outlet (806) is provided below the chilling chamber, and the gasification processing unit further comprises a separator (10), a cyclone (11) and a washing tower (9) which are connected with the gasification furnace in sequence; the separator is provided with a separator feeding hole (1001), a separator water outlet (1002) positioned at the bottom of the separator and a separator gas outlet (1003) positioned at the top of the separator; the cyclone dust collector is provided with a cyclone dust collector feeding hole (1101), a cyclone dust collector water outlet (1102) positioned at the bottom of the cyclone dust collector and a cyclone dust collector air outlet (1103) positioned at the top of the cyclone dust collector; the bottom of the washing tower is provided with a synthesis gas inlet (901), a grey water outlet (902) and a chilling water outlet (905), and the top of the washing tower is provided with a washing water inlet (903) and a clean gas outlet (904); the synthetic gas outlet on the chilling chamber of the gasification furnace is connected with the feed inlet of the separator, the gas outlet of the separator is connected with the feed inlet of the cyclone dust collector, the gas outlet of the cyclone dust collector is connected with the synthetic gas inlet on the washing tower, and the chilling water outlet on the washing tower is connected with the chilling water inlet on the chilling chamber of the gasification furnace.
4. The system for the gasification co-processing of polymorphic waste according to claim 1, wherein the mixing unit further comprises an additive storage tank (12) and a water storage tank (13) which are respectively connected with the mill.
5. The system for the gasification co-processing of polymorphic waste according to claim 1, wherein a stirring device (14) is provided in the coal slurry tank.
6. The system for the gasification co-processing of polymorphic waste according to claim 1, 4 or 5, wherein the mill in the mixing unit is a rod mill.
7. The system for the gasification co-processing of polymorphic waste according to claim 1, wherein a slurry pump (15) is provided on the pipeline between the slurry tank and the gasification furnace.
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| CN202022392971.9U CN213680557U (en) | 2020-10-23 | 2020-10-23 | Gasification co-processing system of polymorphic discarded object |
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| CN202022392971.9U CN213680557U (en) | 2020-10-23 | 2020-10-23 | Gasification co-processing system of polymorphic discarded object |
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