CN217459340U - Slag treatment device of coal gasifier - Google Patents
Slag treatment device of coal gasifier Download PDFInfo
- Publication number
- CN217459340U CN217459340U CN202220244865.2U CN202220244865U CN217459340U CN 217459340 U CN217459340 U CN 217459340U CN 202220244865 U CN202220244865 U CN 202220244865U CN 217459340 U CN217459340 U CN 217459340U
- Authority
- CN
- China
- Prior art keywords
- slag
- water
- communicated
- hot water
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The utility model relates to a slag treatment device of a coal gasifier, which comprises a slag water flushing box, a rotary dehydrator and a hot water settling box, wherein a slag outlet of the coal gasifier is connected with an inlet end of the slag water flushing box, an outlet end of the slag water flushing box is communicated with an inlet end of the rotary dehydrator, and a water slag outlet end of the rotary dehydrator is communicated with a water slag collector through a conveyor; the hot water outlet end of the rotary dehydrator is communicated with the inlet end of a hot water settling tank, the first hot water outlet end of the hot water settling tank is communicated with the inlet of a cooling tower, the water outlet of the cooling tower is communicated with a cold water storage tank, and the water outlet of the cold water storage tank is communicated with a slag water flushing tank; the second hot water outlet end of the hot water settling tank is communicated with the inlet of a hot water exchanger, and the water outlet of the hot water exchanger is communicated with a cold water storage tank; the crude gas outlet of the coal gasification furnace is communicated with the inlet of the flue gas heat exchanger, and the hot air outlet of the flue gas heat exchanger is communicated with the inlet of the slag pulverizer.
Description
Technical Field
The utility model relates to the technical field of coal gasification, in particular to a slag treatment device of a coal gasification furnace.
Background
In the prior art, slag and fly ash are inevitably discharged during the coal and coke gasification system. The existing treatment method is that the slag discharged from the ash lock of the gasification furnace is sent into a slag melting groove, a plurality of cold water nozzles are arranged on the slag melting groove, the high pressure water sprayed by the nozzles granulates the slag in the slag melting groove and then flushes the granulated slag into a slag settling tank, after the granulated slag settles to a certain height in the tank, a bridge type grab bucket grabs the slag out and puts the slag on a slag airing table for water filtration and air drying, the slag is loaded by the bridge type grab bucket and transported to the factory for piling, and the slag flushing water flows into a clarification tank for continuous settling and then is settled again and cooled by a clean water tank and then enters the slag flushing water for circulation again. Although the slag treatment method realizes the recycling of the slag flushing water, the problems of large occupied area of equipment, long dehydration time, large water resource consumption, heat loss of the slag of the gasification furnace and the like cannot be effectively solved. Therefore, it is necessary to provide a new slag treatment apparatus for a coal gasifier to solve the drawbacks of the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a slag processing apparatus of coal gasifier, the utility model discloses a slag water punching case, rotation dehydrator, hot water settling tank, hot water exchanger, gas heater, slag milling machine, the utility model discloses slag water waste heat heating process route, gasifier flue gas heat transfer process route, the superfine powder process route of slag have been constituted to realize the purpose of slag environmental protection processing and comprehensive utilization.
The utility model aims at being realized by the following technical scheme: a slag treatment device of a coal gasifier comprises a slag water flushing tank, a rotary dehydrator, a hot water settling tank, a hot water exchanger, a flue gas heat exchanger and a slag pulverizer; the slag outlet of the coal gasification furnace is connected with the inlet end of the slag water flushing box through a pipeline, the outlet end of the slag water flushing box is communicated with the inlet end of the rotary dehydrator through a pipeline, and the water slag outlet end of the rotary dehydrator is communicated with the water slag collector through a conveyor; the hot water outlet end of the rotary dehydrator is communicated with the inlet end of the hot water settling tank through a pipeline, the first hot water outlet end of the hot water settling tank is communicated with the inlet of a cooling tower through a pipeline, the water outlet of the cooling tower is communicated with a cold water storage tank through a pipeline, and the water outlet of the cold water storage tank is communicated with a flushing pipe in the slag water flushing tank through a pipeline; a second hot water outlet end of the hot water settling tank is communicated with an inlet of the hot water exchanger through a pipeline, and a water outlet of the hot water exchanger is communicated with the cold water storage tank through a pipeline; the crude gas outlet of the coal gasifier is communicated with the inlet of the flue gas heat exchanger through a pipeline, and the hot air outlet of the flue gas heat exchanger is communicated with the inlet of the slag pulverizer through a pipeline.
In order to reduce the temperature of a slag outlet and granulate slag, the slag water flushing box comprises a channel-type box body, the inlet end of the channel-type box body is higher than the outlet end of the channel-type box body, a plurality of cold water nozzles are arranged on the wall surface of the box body, the box floor of the channel-type box body is obliquely arranged from the inlet end to the outlet end of the channel-type box body, a plurality of fish scale pools are arranged on the box floor, cold water nozzles are arranged in the fish scale pools, and the spray waterline of each cold water nozzle forms an included angle of 20-30 degrees with the box floor; the inclination angle of the box floor is 10-30 degrees.
In order to treat the slag for further fine powder, the granulated slag in the granulated slag collector is conveyed to a proportioning bin for proportioning to form grinding materials, and then the grinding materials are conveyed to a slag mill for grinding.
In order to fully utilize the waste heat of the slag flushing water, the temperature of the hot water in the hot water settling tank is 68-70 ℃, and a heating coil is arranged in the hot water exchanger.
Compared with the prior art, the utility model have following advantage:
1. the utility model discloses a sediment water punching case, the grain sediment is punched efficiently, and the grain sediment transports portably.
2. The utility model adopts the rotary dehydrator, the structure of the device is compact, and the grain slag does not need to be transported remotely.
3. The utility model adopts the hot water exchanger and the flue gas heat exchanger, can effectively recover the heat energy of the flue gas and the slag flushing water, saves energy and reduces pollution.
4. The utility model discloses a slag milling machine is handled the slag deep-processing, converts building material into, improves economic income.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a block diagram of the process route of the present invention;
fig. 2A is a schematic diagram of the general structure of the present invention;
fig. 2B is a schematic diagram of the overall structure of the present invention;
fig. 2C is a schematic diagram of the overall structure of the present invention;
FIG. 3 is a schematic structural view of the slag water flushing box of the present invention;
fig. 4 is a schematic view of the structure of the fish scale tank of the present invention;
fig. 5 is a schematic layout view of the fish scale tank of the present invention.
Detailed Description
The first embodiment is as follows:
referring to fig. 1, 2A, 2B and 2C, the slag treatment device of the coal gasifier of the present invention includes a slag water flushing tank 2, a rotary dehydrator 3, a hot water settling tank 4, a hot water exchanger 7, a flue gas heat exchanger 9 and a slag mill 13; a slag outlet of the coal gasification furnace 1 is connected with an inlet end of the slag water flushing box through a pipeline, an outlet end of the slag water flushing box is communicated with an inlet end of the rotary dehydrator through a pipeline, and a water slag outlet end of the rotary dehydrator is communicated with a water slag collector 10 through a conveyor 101; the hot water outlet end of the rotary dehydrator is communicated with the inlet end of the hot water settling tank 4 through a pipeline 31, the first hot water outlet end of the hot water settling tank is communicated with the inlet of a cooling tower 5 through a pipeline 42, the water outlet of the cooling tower is communicated with a cold water storage tank 6 through a pipeline, and the water outlet of the cold water storage tank is communicated with a flushing pipe in the slag water flushing tank through a pipeline 61; the second hot water outlet end of the hot water settling tank is communicated with the inlet of the hot water exchanger through a pipeline 41, and the water outlet of the hot water exchanger is communicated with the cold water storage tank through a pipeline 71; the crude gas outlet of the coal gasifier is communicated with the inlet of the flue gas heat exchanger through a pipeline 90, and the hot air outlet of the flue gas heat exchanger is communicated with the inlet of the slag pulverizer 13 through a pipeline 92. In the above-mentioned pipeline, according to the design requirement, there is a matched delivery pump or water pump, and a detailed description is not needed here.
In this embodiment, the coal gasifier belongs to the prior art and is not described in detail, referring to fig. 2A, the charging material is added from the top of the furnace body, the slag (molten slag) formed after the gasification reaction is discharged from a molten slag outlet at the bottom of the furnace body, and then is connected with the inlet end of the slag water flushing tank 2 through a pipeline 21; the slag water flushing tank comprises a channel type tank body, the inlet end of the channel type tank body is higher than the outlet end of the channel type tank body, a plurality of cold water nozzles are arranged on the wall surface of the tank body, and the cold water nozzles are communicated with a flushing pipe in the slag water flushing tank in parallel; slag is quenched by cold water sprayed from a cold water nozzle in the slag water flushing box, and slag water mixture is flushed to an outlet end by water flow; the outlet end of the slag water flushing box is communicated with the inlet end of the rotary dehydrator through a pipeline 22.
In this embodiment, the rotary dehydrator is prior art and will not be described in detail. The grain slag outlet end of the rotary dehydrator is connected with a grain slag collector 10 through a conveyor 101; the hot water outlet end of the rotary dehydrator is communicated with the inlet end of the hot water settling tank through a pipeline 31, and a water pump is arranged in the pipeline 31. The conveyor for conveying the granulated slag belongs to the prior art (mechanical equipment such as a chain conveyor or a bucket elevator conveyor can be adopted), and is not described in detail. The granulated slag collector is a high-level buffer storage bin, and a valve is arranged at the bottom of the granulated slag collector, and the granulated slag collector can load and unload granulated slag to the granulated slag transport vehicle 102 by operating the valve.
In the embodiment, the hot water sedimentation tank 4 is a tank body for containing hot water and is used for sedimentation of slag flushing water, the outer part of the hot water sedimentation tank is provided with a heat insulation layer, and the bottom of the hot water sedimentation tank is provided with a sewage draining outlet for cleaning precipitated sludge; the first hot water outlet end of the hot water settling tank is communicated with the inlet of the cooling tower 5 through a pipeline 42, the second hot water outlet end of the hot water settling tank is communicated with the inlet of the hot water exchanger through a pipeline 41, and a water pump and a valve are respectively arranged in the pipelines 41 and 42. In the present embodiment, the cooling tower belongs to the prior art and is not described in detail. The cold water storage tank 6 is a device for adjusting water temperature and water amount, and is provided with a water replenishing pipe, in which a water replenishing valve and a water pump are provided, in addition to collecting cooling water of the cooling tower and low-temperature water of the hot water exchanger, and the water replenishing pipe is connected to an external water supply source (not shown in the drawing). Is used for keeping the slag water flushing box sufficiently and stably using water and adjusting the water temperature of the slag water flushing box. The device of the utility model consumes some water in the process (along with the water slag loss) in the operation, and the cold water storage tank can randomly open the cold water of the external water source of the water replenishing valve introducing system. The cold water storage tank supplies water to the slag water making tank through a pressurized water pump.
Referring to fig. 2A and 2C, in this embodiment, the raw gas outlet of the coal gasifier is communicated with the inlet of the flue gas heat exchanger 9 through a pipeline 90, and the hot air outlet of the flue gas heat exchanger is communicated with the inlet of the slag mill 13 through a pipeline 92. In the above-mentioned pipeline, be provided with assorted delivery pump according to the design requirement. The gas after temperature reduction is sent to the user through the pipeline 91. The flue gas heat exchanger belongs to the prior art, and the top of the flue gas heat exchanger is provided with a normal-temperature air inlet 93, the bottom of the flue gas heat exchanger is provided with a hot air outlet, the upper part of the side wall is provided with a crude gas inlet which is communicated with a crude gas outlet of a coal gasifier through a pipeline 90, the lower part of the side wall is provided with a gas outlet, and the coal gas is conveyed to a user through a pipeline 91.
Referring to fig. 3, 4 and 5 (fig. 4 is an enlarged view of a fish scale pond in fig. 3), in another embodiment of the present invention, the slag water flushing tank comprises a channel-type tank body, the inlet end of which is higher than the outlet end, the wall surface of the tank body is provided with a plurality of cold water nozzles 203, the tank floor 201 of the channel-type tank body is inclined from the inlet end to the outlet end of the channel-type tank body, the tank floor is provided with a plurality of fish scale ponds 202, the fish scale ponds are internally provided with the cold water nozzles 203, and the spraying waterline of the cold water nozzles forms an included angle of 20-30 degrees with the tank floor; the box floor is inclined at an angle of 10-30 (10-30 relative to horizontal). In order to ensure the speed of slag flushing water flow, a high-pressure water pump is arranged in front of the cold water nozzle. The purpose of arranging a plurality of fish scale pools is to prevent thermal shock of high-temperature slag on the box floor; because the fish scale pool and the cold water nozzle in the pool are arranged on the box floor, cold water is kept in the fish scale pool, so that the massive slag entering the box floor can be decelerated, rolled or temporarily retained in the fish scale pool, and granulation effect can be generated on the slag in the process; the cold water nozzles in the fish scale pool can keep a flowing water film on the tank floor, and the water film can reduce the abrasion of slag on the tank floor. In this embodiment, the fish scale pools on the box floor are in a staggered layout (see fig. 5, fig. 5 is a partial top view of the box floor), or may be in a checkerboard layout. (see fig. 2A), the upper part of the left end of the channel-type box body of the slag water flushing box is communicated with a slag outlet at the bottom of the coal gasifier through a pipeline 21, and the lower part of the right end of the channel-type box body of the slag water flushing box is communicated with a slag water inlet of the rotary dehydrator through a pipeline 22.
Referring to fig. 2C, in this embodiment, in order to further treat the granulated slag as a fine powder, the granulated slag in the granulated slag collector is conveyed to the proportioning bin 12 to be proportioned to form an abrasive, then the abrasive is conveyed to the slag mill 13 to be ground, the processed fine slag powder is conveyed to the dust remover 14 through the pipeline 131 to be dedusted to form a fine slag powder finished product, then the fine slag powder is conveyed to the finished product warehouse 15 through the conveyor 141, and the dedusted flue gas is discharged through the chimney 16. Slag mills are known in the art (either vertical mills or horizontal mills can be used) and are not described in detail herein. The hot air generated by the flue gas heat exchanger is conveyed into the slag grinding mill through a pipeline 92 to dry the grinding materials. The granulated slag collector is a high-level buffer storage bin, and a valve is arranged at the bottom of the granulated slag collector, and the granulated slag collector can load and unload granulated slag to the granulated slag transport vehicle 102 by operating the valve. The grain slag conveying machine can adopt an automobile, a belt conveyor, a chain conveyor or a bucket elevator conveyor and other mechanical equipment. In consideration of the problem that the speed of the granulated slag processing of the slag mill is out of order with the speed of the granulated slag discharged from the rotary dehydrator, in the present embodiment, a granulated slag handling bin 11 (see fig. 1) is provided downstream of the granulated slag collector, and the granulated slag which cannot be stored in the granulated slag collector is collected in the granulated slag handling bin, and the granulated slag is transported to a proportioning bin 12 by a transport machine.
In the embodiment, in order to fully utilize the waste heat of the slag flushing water to supply heat to users, the temperature of hot water in the hot water settling tank is 68-70 ℃; referring to fig. 1 and 2B, a heating coil 8 is disposed in the heat exchanger 7. The hot water exchanger belongs to the prior art and is not described in detail. The water return pipe 82 of the heating coil pipe is connected with a water return pipeline of a user, the hot water pipe 81 of the heating coil pipe is connected with a hot water pipeline of the user, and the heat of the slag flushing water is used for heating the user.
The utility model discloses a working process does: the gasification furnace slag is quenched by a slag-water flushing tank and conveyed to a rotary dehydrator by water power, and the water slag and flushing slag hot water are separated in the dehydrator. The slag flushing hot water separated from the rotary dehydrator enters a hot water exchanger after being treated by a hot water settling tank to be used for heating water for heat exchange and temperature rise, the heating water is output from a water outlet of the heat exchanger and is sent to an external heating user of a heating system, the slag flushing water after heat exchange and cooling flows into a cold water storage tank and is sent to a slag water flushing tank by a water supply pump for recycling, when heating is not needed, a water supply pipeline 41 of the hot water exchanger can be cut off, and the slag flushing hot water after being treated by the hot water settling tank enters a cooling tower for cooling and then flows into the cold water storage tank and is sent to the slag water flushing tank for recycling. The gasifier flue gas heat exchange system comprises a dry type flue gas heat exchanger and a hot air channel, and external air is sent into the slag pulverizer after being subjected to heat exchange and temperature rise with crude gas produced by the gasifier through the flue gas heat exchanger for drying grinding materials. The granulating slag separated from the rotary dehydrator is sent to a granulating slag collector, then the granulating slag is sent to a proportioning bin for quantitative proportioning to form grinding materials, then the grinding materials are sent to a slag pulverizer for grinding treatment, the processed slag fine powder is sent to a dust remover for treatment to form a slag fine powder finished product, then the slag fine powder finished product is sent to a finished product warehouse through a conveyor, and the flue gas after dust removal is discharged through a chimney.
Claims (3)
1. The utility model provides a slag processing apparatus of coal gasifier, includes slag-water flushing case, rotation dehydrator, hot water settling tank, hot water exchanger, gas heater, slag milling machine which characterized in that: the slag outlet of the coal gasifier is connected with the inlet end of the slag water flushing box through a pipeline, the outlet end of the slag water flushing box is communicated with the inlet end of the rotary dehydrator through a pipeline, and the grain slag outlet end of the rotary dehydrator is communicated with the grain slag collector through a conveyor; the hot water outlet end of the rotary dehydrator is communicated with the inlet end of the hot water settling tank through a pipeline, the first hot water outlet end of the hot water settling tank is communicated with the inlet of a cooling tower through a pipeline, the water outlet of the cooling tower is communicated with a cold water storage tank through a pipeline, and the water outlet of the cold water storage tank is communicated with a flushing pipe in the slag water flushing tank through a pipeline; the second hot water outlet end of the hot water sedimentation tank is communicated with the inlet of the hot water exchanger through a pipeline, and the water outlet of the hot water exchanger is communicated with the cold water storage tank through a pipeline; the crude gas outlet of the coal gasifier is communicated with the inlet of the flue gas heat exchanger through a pipeline, and the hot air outlet of the flue gas heat exchanger is communicated with the inlet of the slag pulverizer through a pipeline.
2. The slag treatment apparatus for a coal gasifier according to claim 1, wherein: the slag water flushing box comprises a channel type box body, the inlet end of the channel type box body is higher than the outlet end of the channel type box body, a plurality of cold water nozzles are arranged on the wall surface of the box body, the box floor of the channel type box body is obliquely arranged from the inlet end to the outlet end of the channel type box body, a plurality of fish scale pools are arranged on the box floor, the cold water nozzles are arranged in the fish scale pools, and the spray water lines of the cold water nozzles form included angles of 20-30 degrees with the box floor; the inclination angle of the box floor is 10-30 degrees.
3. The slag treatment apparatus for a coal gasifier according to claim 1, wherein: the temperature of the hot water in the hot water settling tank is 68-70 ℃, and a heating coil is arranged in the hot water exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220244865.2U CN217459340U (en) | 2022-01-29 | 2022-01-29 | Slag treatment device of coal gasifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220244865.2U CN217459340U (en) | 2022-01-29 | 2022-01-29 | Slag treatment device of coal gasifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217459340U true CN217459340U (en) | 2022-09-20 |
Family
ID=83263959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220244865.2U Active CN217459340U (en) | 2022-01-29 | 2022-01-29 | Slag treatment device of coal gasifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217459340U (en) |
-
2022
- 2022-01-29 CN CN202220244865.2U patent/CN217459340U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102342582B1 (en) | Rotating cylinder type treatment process and treatment equipment suitable for the total amount of steel slag treatment | |
| CN102766706B (en) | Coal gasification system for waste heat of blast furnace slag | |
| CN102964048A (en) | Method for sludge drying and sewage treatment | |
| EP4112749A1 (en) | Blast furnace slag granulation and waste heat recovery and utilization device and method | |
| CN101613626A (en) | A kind of technology of production cooled coal gas of no discharge of phenolic water | |
| CN101417841B (en) | Process for treating revolving furnace flue gas dedusting water from steel mill by low hardness method | |
| CN100453655C (en) | Blastfurnace slag combined treating system | |
| CN108424990A (en) | A kind of ironmaking technique of fusion and reduction coal gas of high temperature processing system | |
| TWI793683B (en) | Method and device for slag cooling, granulation and sludge drying | |
| CN217459340U (en) | Slag treatment device of coal gasifier | |
| CN102766707B (en) | Blast furnace slag residual heat utilization system based on coal gasification principle | |
| CN111996315B (en) | Waste heat recovery device for molten slag | |
| CN104689755A (en) | System and process for granulating calcium carbide liquid at high temperature and recycling heat | |
| CN114507551A (en) | Slag treatment device of coal gasifier | |
| CN112725554A (en) | High-temperature liquid dilute slag air quenching granulation and waste heat recovery system | |
| CN101886149A (en) | High temperature liquid slag recovery method | |
| CN108060280B (en) | Slag granulation and heat utilization method by jet steam method | |
| CN109536656B (en) | Granulating system adopting roller pumping drying method | |
| CN101580231A (en) | Method for transporting dregs in pyrite-based sulphuric acid | |
| CN209210837U (en) | A kind of blast-furnace slag processing system | |
| CN111116010A (en) | Steel mill sludge treatment system and utilization method | |
| KR102321056B1 (en) | Sand production method for mortar using a sintering furnace combined with a rotary kiln furnace and a fluidized bed furnace | |
| CN217922165U (en) | Steel slag air quenching treatment system | |
| CN214019842U (en) | Dedusting treatment system for flue gas of steel slag hot stewing pool | |
| CN217677397U (en) | Solid useless waste heat recovery system of processing of cinder with supporting of crushed coal pressure gasification stove |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |