CN202968498U - Pulverized coal ash content control device based on dry pulverized coal gasification technology - Google Patents
Pulverized coal ash content control device based on dry pulverized coal gasification technology Download PDFInfo
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- CN202968498U CN202968498U CN 201220565512 CN201220565512U CN202968498U CN 202968498 U CN202968498 U CN 202968498U CN 201220565512 CN201220565512 CN 201220565512 CN 201220565512 U CN201220565512 U CN 201220565512U CN 202968498 U CN202968498 U CN 202968498U
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Abstract
The utility model discloses a pulverized coal ash content control device based on a dry pulverized coal gasification technology. The pulverized coal ash content control device comprises a coal bunker A, a coal feeding machine A connected with the coal bunker A, a coal bunker B, a coal feeding machine B connected with the coal bunker B, a coal grinding machine, a separation filter and a pulverized coal bunker, wherein discharge ports of the coal feeding machine A and the coal feeding machine B are simultaneously connected with the feed end of the coal grinding machine, the discharge end of the coal grinding machine is connected with the feed end of the separation filter, the pulverized coal bunker is positioned at the lower end of the separation filter and connected with the discharge end of the separation filter through a pipeline, and a pulverized coal sampling port is arranged on the pipeline between the pulverized coal bunker and the separation filter. The pulverized coal ash content control device disclosed by the utility model has the beneficial effects of achieving the purpose of precisely controlling the ash content in pulverized coal, realizing the stable ash content in the pulverized coal in a dry pulverized coal gasification furnace and solve the difficult problems of fluctuation of the device caused by unstable ash content in the coal and shutdown of a synthetic gas cooler due to ash blockage, which perplex the Shell dry pulverized coal gasification technology.
Description
Technical field
The utility model relates to a kind of coal powder fraction control device based on the dry coal powder gasification technology, relates in particular to a kind of Shell Coal Gasification with the ash control device of refinery coke coal blending, belongs to technical field of chemical.
Background technology
The Modern New Coal Chemical Industry is take the product of producing clear energy sources and alternative petrochemical complex as main, and wherein the representative of powdered coal pressuring gasified technology has shell, GSP, space flight stove etc.Shell Coal Gasification Process is widely used all over China as the representative of s-generation Clean Coal Gasification Technology, and its technical process is simply:
Feed coal is delivered to coal pulverizer through fragmentation by transportation facilities, feed coal is worn into coal dust (90%＜100 μ m) and dry in coal pulverizer, coal dust is delivered to gasification furnace coal burner by high pressure nitrogen or carbon dioxide gas with coal dust through normal pressure Pulverized Coal Bin, pressurization Pulverized Coal Bin and feed hopper.The high pressure oxygen that divides from sky is through importing the coal burner after preheating with after middle pressure superheated vapour mixes.Oxidation and the various conversion reaction of carbon occur in coal dust, oxygen and steam under vapourizing furnace high-temperature pressurizing condition.The top of gasification furnace approximately coal gas of high temperature of 1500 ℃ enters syngas cooler through the cooled cooled coal gas of dedusting Quench to 900 a ℃ left and right.Coal gas after synthetic Gas Cooler reclaims heat by-product high pressure, middle pressure saturation steam or superheated vapour enters dry gas cleaning and wet scrubbing system, and in the coal gas after processing, dustiness is sent subsequent handling less than 1mg/m3.The slag bath that the high-temperature slag that gasification produces in vapourizing furnace, gravity flow enter the vapourizing furnace bottom carries out Quench, and high-temperature slag forms the vitreum of number mm in size after Quench.
In shell dry coal powder gasification technology, vapourizing furnace adopts water wall structure, and the water wall inboard is provided with refractory mortar and slag nail, and the synthetic gas cooling technology adopts pot destroying process.If coal powder fraction is high, cause device slag removing system, ash disposal system overload operation, useless pot (syngas cooler) easily stifled ash causes device to stop, and the thick slag that easily collapses of gasifier water-cooling wall hanging slag stops up slag removing system and causes parking; Coal powder fraction is low, the thin easy scorification slag nail of gasifier water-cooling wall hanging slag and damage refractory mortar.
And often there is larger difference in the feed coal ash content of enterprise's outsourcing, and no matter adopt single coal, or many coals blending, and use refinery coke coal blending, in case the unreasonable stability that will have a strong impact on device of ash control, increase the parking risk of coal gasification apparatus, therefore being badly in need of a kind of dry coal powder gasification technology that is widely used in can control the device of coal powder fraction again.
Summary of the invention
The purpose of this utility model is to provide a kind of coal powder fraction control device based on the dry coal powder gasification technology, can realize accurately controlling coal powder fraction, realize that in dry coal dust gasification furnace, coal powder fraction is stable, solve the unstable difficult problem that causes that device fluctuation and the stifled ash of syngas cooler stop of puzzlement shell dry coal powder gasification technology midale coal ash.
the purpose of this utility model is achieved through the following technical solutions: a kind of coal powder fraction control device based on the dry coal powder gasification technology, it comprises coal bunker A, the feeder A that is connected with coal bunker A, coal bunker B, the feeder B that is connected with coal bunker B, coal pulverizer, separator-filter and fine coal storehouse, wherein, feeder A is connected discharge port and is connected with the feed end of coal pulverizer simultaneously with feeder B, the discharge end of coal pulverizer is connected with the feed end of separator-filter, the fine coal position in storehouse is in the lower end of separator-filter and be connected with the discharge end of separator-filter by pipeline, be provided with the fine coal thief hole on pipeline between fine coal storehouse and separator-filter.
Described separator-filter is the cloth bag separator-filter.
The discharge end of described coal pulverizer is connected with the feed end of separator-filter by transfer roller.
the beneficial effects of the utility model are: increased ash analysis before coal-grinding, increase the coal powder fraction analysis after coal-grinding, calculate default configuration proportion according to the ash content before coal-grinding, carry out ash analysis in the coal powder sampler sampling, the ash divided data is adjusted again, and charge proportion is revised, reached the purpose of accurate control coal powder fraction, realized that in dry coal dust gasification furnace, coal powder fraction is stable, solved the unstable difficult problem that causes that device fluctuation and the stifled ash of syngas cooler stop of puzzlement shell dry coal powder gasification technology midale coal ash, realized that refinery coke and low grade coal blending proportioning are controlled and the breakthrough of ash control.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Wherein, 1-coal bunker A, 2-coal bunker B, 3-feeder A3,4-feeder B, 5-coal pulverizer, 6-separator-filter, 7-fine coal thief hole, 8-fine coal storehouse.
Embodiment
Further describe the technical solution of the utility model below in conjunction with accompanying drawing, but that claimed scope is not limited to is described.
as Fig. 1, a kind of coal powder fraction control device based on the dry coal powder gasification technology, it comprises coal bunker A1, the feeder A3 that is connected with coal bunker A1, coal bunker B2, the feeder B4 that is connected with coal bunker B2, coal pulverizer 5, separator-filter 6 and fine coal storehouse 8, wherein, feeder A3 is connected discharge port and is connected with the feed end of coal pulverizer 5 simultaneously with feeder B4, the discharge end of coal pulverizer 5 is connected with the feed end of separator-filter 6, fine coal storehouse 8 is positioned at the lower end of separator-filter 6 and is connected by the discharge end of pipeline with separator-filter 6, be provided with fine coal thief hole 7 on pipeline between fine coal storehouse 8 and separator-filter 6.
Described separator-filter 6 is cloth bag separator-filter 6.
The discharge end of described coal pulverizer 5 is connected by the feed end of transfer roller with separator-filter 6.
Basic functional principle of the present utility model comprises following step:
(1), ash analysis before coal-grinding: coal or Jiao that needs are ground carry out ash analysis, and coal or Jiao of the different ash content of packing in coal bunker A1 and coal bunker B2 are delivered to coal pulverizer 5 by feeder A3 and feeder B4 according to the proportioning of setting respectively;
(2), ash analysis after coal-grinding: 5 pairs of coals of coal pulverizer or Jiao grind, then be delivered to separator-filter 6, realize separating of gas and coal dust in separator-filter 6, the coal dust that separates enters by tremie pipe at action of gravitation in fine coal storehouse 8 and stores for future use, and by 7 pairs of coal dusts of fine coal thief hole regularly or ask for as required sample and carry out ash analysis after coal-grinding;
(3), the ash content data are adjusted, are revised: accounting is analyzed in the ash analysis before coal-grinding and the ash analysis after coal-grinding, according to the default configuration proportion of the calculating of the ash content before coal-grinding, two feeders being advanced the coal ratio revises, before making final ash oontent reach coal-grinding, ash content calculates preset value, reaches the purpose of accurate control coal powder fraction.
Compared with the prior art, this device can adopt the very large coal of ash content difference or Jiao.The refinery coke ash content of buying on market＜1%, and the feed coal ash content of buying on market is usually 14%～28%, if adopt original technical scheme, ash content can not use in shell dry coal powder gasification technology up to the feed coal more than 20%, and refinery coke is inapplicable raw material as shell dry coal powder gasification technology also.After adopting the technical program, be not difficult to calculate, ash content＜1% refinery coke can and ash content＞20% feed coal according to certain ratio, be fitted on and be fit between Technology of Shell Coal Gasification coal powder fraction content 17%～19%; Simultaneously, adopt the coal of ash content 14%～17%, with the coal of ash content＞20%, according to certain charge proportion, be fitted between suitable Technology of Shell Coal Gasification coal powder fraction content 17%～19%.this scheme can be suitable for any one low-ash coal or burnt and high-ash coal, according to certain charge proportion, produce the coal dust of ash content between the low ash content of charging and high ash content arbitrarily, enlarged Technology of Shell Coal Gasification coal subject range, applicable equally to other dry coal powder gasification technology pulverized coal preparation, dry coal powder gasification technique device coal or burnt buying scope have been enlarged simultaneously, make enterprise find better balance between according to ash content and price in the buying of coal, realize the economic benefit that enterprise is larger, in coal resource day by day exhausted today, has good application prospect.
Claims (3)
1. coal powder fraction control device based on the dry coal powder gasification technology, it is characterized in that: it comprises coal bunker A(1), with coal bunker A(1) the feeder A(3 that is connected), coal bunker B(2), with coal bunker B(2) the feeder B(4 that is connected), coal pulverizer (5), separator-filter (6) and fine coal storehouse (8), wherein, the discharge port of feeder A(3) being connected with feeder B(4 is connected with the feed end of coal pulverizer (5) simultaneously, the discharge end of coal pulverizer (5) is connected with the feed end of separator-filter (6), fine coal storehouse (8) is positioned at the lower end of separator-filter (6) and is connected by the discharge end of pipeline with separator-filter (6), be provided with fine coal thief hole (7) on pipeline between fine coal storehouse (8) and separator-filter (6).
2. the coal powder fraction control device based on the dry coal powder gasification technology according to claim 1, it is characterized in that: described separator-filter (6) is cloth bag separator-filter (6).
3. the coal powder fraction control device based on the dry coal powder gasification technology according to claim 1, it is characterized in that: the discharge end of described coal pulverizer (5) is connected by the feed end of transfer roller with separator-filter (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220565512 CN202968498U (en) | 2012-10-31 | 2012-10-31 | Pulverized coal ash content control device based on dry pulverized coal gasification technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220565512 CN202968498U (en) | 2012-10-31 | 2012-10-31 | Pulverized coal ash content control device based on dry pulverized coal gasification technology |
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| CN202968498U true CN202968498U (en) | 2013-06-05 |
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| CN 201220565512 Expired - Lifetime CN202968498U (en) | 2012-10-31 | 2012-10-31 | Pulverized coal ash content control device based on dry pulverized coal gasification technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106398775A (en) * | 2016-12-01 | 2017-02-15 | 陕西特谷能源有限公司 | Coal gasification system |
| CN108085068A (en) * | 2018-01-24 | 2018-05-29 | 山西潞安煤基清洁能源有限责任公司 | A kind of mixture coal method and device suitable for coal gasification apparatus |
| CN113750903A (en) * | 2021-08-24 | 2021-12-07 | 中国神华煤制油化工有限公司 | Coal blending device |
-
2012
- 2012-10-31 CN CN 201220565512 patent/CN202968498U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106398775A (en) * | 2016-12-01 | 2017-02-15 | 陕西特谷能源有限公司 | Coal gasification system |
| CN106398775B (en) * | 2016-12-01 | 2022-05-31 | 陕西特谷能源有限公司 | Coal gasification system |
| CN108085068A (en) * | 2018-01-24 | 2018-05-29 | 山西潞安煤基清洁能源有限责任公司 | A kind of mixture coal method and device suitable for coal gasification apparatus |
| CN113750903A (en) * | 2021-08-24 | 2021-12-07 | 中国神华煤制油化工有限公司 | Coal blending device |
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Granted publication date: 20130605 |