CN201574143U - Grading gasification furnace of powdered coal circulating fluidized bed - Google Patents
Grading gasification furnace of powdered coal circulating fluidized bed Download PDFInfo
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- CN201574143U CN201574143U CN2009202706127U CN200920270612U CN201574143U CN 201574143 U CN201574143 U CN 201574143U CN 2009202706127 U CN2009202706127 U CN 2009202706127U CN 200920270612 U CN200920270612 U CN 200920270612U CN 201574143 U CN201574143 U CN 201574143U
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Abstract
The utility model provides a grading gasification furnace of a powdered coal circulating fluidized bed, which is composed of a fluidized bed, a gas distributor, a dust removing pipe, a charging opening, a gas-solid separator, a coarse-dust circulating material return pipe, a material return device, a secondary gas-solid separator, a fine-dust circulating material return pipe, a spiral-flow type air flow bed, a synthetic gas outlet and the like. The gas distributor and the dust removing pipe are arranged at the bottom part of the fluidized bed, the charging opening is arranged at the position of 500 to 600mm from the bottom part, and the spiral-flow type air flow bed is arranged at the position of 1,000 to 2,000mm from the bottom part; the gas-solid separator and the secondary gas-solid separator are arranged at the top part of the fluidized bed, the coarse-dust circulating material return pipe of the gas-solid separator is connected with the fluidized bed by the material return device, and the fine-dust circulating material return pipe of the secondary gas-solid separator is connected with the spiral-flow type air flow bed by the material return device.
Description
One, technical field
The utility model relates to a kind of fine coal circulating fluidized bed graded gasification furnace, belongs to chemical mechanical equipment.
Two, background technology
Gasification is the tap of clean coal chemical technology, is the frontier technology of technology such as chemical such as development DCL/Direct coal liquefaction, indirect liquefaction, synthol ether fuel and efficient power generation.Coal Gasification Technology mainly is divided into fixed bed lump coal gasification technology, fluid bed powder coal gasification technology and entrained flow bed gasification technology by gasification mode, in addition the molten slag bed of developing in addition, dissolved salt bed and molten iron bed coal-gasification method, hydrogasification method, the coal gasification process that utilizes nuclear energy, underground gasification method or the like.Fixed bed (moving-bed) Coal Gasification Technology is characterized in the gas making of lump coal air vapor; Its advantage is that technology maturation, facility investment are few and be gasificated into lessly, and especially the intermittent type static bed coal gasification does not need pure oxygen, just can obtain the synthetic gas of nonnitrogenous gas with water vapour and air gas making; Its shortcoming is a carbon residue content height (10%～30%) in the coal ash, and the coal restriction is tight, and gasification high-quality lump coal causes many enterprises expense of raw materials height, and production cost is high.The fluid bed powder coal gasification technology is characterized in the continuous gas making of fine coal oxygen water vapour; Its advantage: directly with cheap various fine coal make raw material, the gas production ability is moderate, gasification efficiency is high, low in the pollution of the environment, facility investment is higher, the gas production cost is low; Its shortcoming: carbon residue content higher (5～15%) difficult problem of promptly suffering from vomiting and diarrhoea in the big and carbon residue content height (20%～30%) of flying dust amount, the coal ash.The air-flow bed coal-gasification technology is characterized in the continuous gas making of fines oxygen water vapour, slag tap; Its advantage be gas production ability height, gasification efficiency height, low in the pollution of the environment, facility investment is high, carbon residue content higher (2～7%) in the coal ash, gas production cost are low; Its shortcoming is a fineness of pulverized coal requirement height, pulverizes the energy consumption height; Temperature of reaction height (about 1400 ℃) time short (several seconds) but charging coal dust can not preheatings, and the oxygen consumption is big, and energy utilizes unreasonable, coal water slurry charging oxygen consumption height especially, and the carbon effective rate of utilization is lower.
The reactivity of coal changes because of the transformation stage is different, its preceding 80%～90% more easily gasification, back 10%～20% is difficult to gasification, present Coal Gasification Technology is often regarded coal as one matter, and try hard to by single process its whole conversions, thereby last 10%～20% difficult gasification carbon residue determined gasification W-response condition harshness (high temperature, high pressure, long residence time), be badly in need of response characteristic exploitation classification gasification technology and equipment according to each stage of gasification.
Three, summary of the invention
The utility model purpose is to provide a kind of fine coal circulating fluidized bed graded gasification furnace, and by size classification, the coupling of wetization and thin grey air flow bed high-temperature gasification solves the difficult problem that fluidized-bed gasification is suffered from vomiting and diarrhoea in the big-and-middle particle circulation by the cycling hot ash.
Technical solution of the present utility model is: a kind of fine coal circulating fluidized bed graded gasification furnace, form by fluidized-bed, gas distributor, inlet pipe, ash releasing tube, opening for feed, one-level gas-solid separator, cinder circulation revert pipe, material returning device, secondary gas-solid separator, thin grey circulation revert pipe, whirlwind-type air flow bed, syngas outlet etc.; Fluidized-bed bottom is provided with gas distributor, inlet pipe and ash releasing tube, is provided with inlet pipe below the gas distributor, and ash releasing tube is arranged in the center of gas distributor; Position apart from fluidized-bed bottom 500-6000mm is provided with opening for feed, is provided with the whirlwind-type air flow bed apart from the position of bottom 1000-2000mm, and the top is provided with one-level gas-solid separator and secondary gas-solid separator; The cinder circulation revert pipe of one-level gas-solid separator links to each other with fluidized-bed by material returning device, and the thin grey circulation revert pipe of secondary gas-solid separator links to each other with the whirlwind-type air flow bed by material returning device.
Four, description of drawings
Accompanying drawing is the utility model circulating fluidized bed graded gasification furnace synoptic diagram.
The drawing of accompanying drawing is described as follows:
1, fluidized-bed 2, gas distributor 3, inlet pipe 4, charging opening 5, ash releasing tube 6, one-level gas-solid separator 7, cinder circulation revert pipe 8, material returning device 9, secondary gas-solid separator 10, thin grey circulation revert pipe 11, air flow bed 12, gas exit
Five. embodiment
In conjunction with the accompanying drawings embodiment of the present utility model is done description.
A kind of fine coal circulating fluidized bed graded gasification furnace is made up of fluidized-bed (1), gas distributor (2), inlet pipe (3), opening for feed (4), ash releasing tube (5), one-level gas-solid separator (6), cinder circulation revert pipe (7), material returning device (8), secondary gas-solid separator (9), thin grey circulation revert pipe (10), whirlwind-type air flow bed (11), syngas outlet (12) etc.; Fluidized-bed (1) bottom is provided with gas distributor (2), inlet pipe (3) and ash releasing tube (5), is provided with inlet pipe (3) below the gas distributor (2), and ash releasing tube (5) is arranged in the center of gas distributor (2); Position apart from bottom 500-6000mm is provided with opening for feed (4), is provided with whirlwind-type air flow bed (11) apart from the position of bottom 1000-2000mm, and the top is provided with one-level gas-solid separator (6) and secondary gas-solid separator (9); The cinder circulation revert pipe (7) of one-level gas-solid separator (6) links to each other with fluidized-bed (1) by material returning device (8), and the thin grey circulation revert pipe (10) of secondary gas-solid separator (9) links to each other with whirlwind-type air flow bed (11) by material returning device (8).
During concrete operation, 0～6mm fine coal that will add from charging opening (4) and small amount of limestone are sent into fluidized-bed (1) and are gone up 1000～1100 ℃ of reactions down at gas distributor (2) with oxygenant that adds by inlet pipe (3) and water vapour, generate water-gas.The water-gas that gasification is produced is through the two-stage gas solid separation, and the thick semicoke of the isolating high temperature of first step gas solid separation (6) returns fluidized-bed (1) continuation and oxygenant and water vapour and reacts by circulate revert pipe (7) and material returning device (8) of cinder; The thin semicoke of the isolating high temperature of second stage gas solid separation (9) is delivered to the whirlwind-type air flow bed (11) that is communicated with the fluidized-bed middle and lower part by thin grey circulation revert pipe (10) and material returning device (8), and tangent line enters whirlwind-type air flow bed (11) 1300～1500 ℃ of reactions down under the carrying of water vapour and oxygenant.High Temperature Gas that generates in the whirlwind-type air flow bed (11) and liquid lime-ash be the oblique whirlwind-type air flow bed (11) that flows out down of eddy flow in the same way, and High Temperature Gas enters fluidized-bed (1) to rising, provides heat for fluidized-bed (1) gasifies; Liquid lime-ash flows to the circulating ash bed of material of fluidized-bed (1) downwards, and heat exchange is solidified as the solid lime-ash, discharges with the ash discharge of circulating fluidized bed (1) by ash releasing tube (5).
A kind of fine coal circulating fluidized bed graded gasification furnace provided by the utility model has been realized under the fine coal different condition gasification stage by stage according to the response characteristic of coal, and the oxygen consumption is low, gasification efficiency is high, carbon residue content is low in the coal ash; Gasification intensity is big, and equipment volume is little, and steel consumption is low, and fixed investment reduces greatly; Feed size requires low, does not need more comminution energy conssumption; Simple to operate, the start-stop car is convenient, and continuity is good, and coal adaptability is strong; Realized that inside reactor divides desulfurization, has simplified scavenging process; High Temperature Gas that generates in the air flow bed and liquid lime-ash are the circulating fluidized bed heat supply simultaneously, and liquid lime-ash is converted into the solid lime-ash and discharges, and the ash discharge process is simple.
Claims (1)
1. a fine coal circulating fluidized bed graded gasification furnace is made up of fluidized-bed, gas distributor, inlet pipe, ash releasing tube, opening for feed, one-level gas-solid separator, cinder circulation revert pipe, material returning device, secondary gas-solid separator, thin grey circulation revert pipe, whirlwind-type air flow bed, syngas outlet etc.; It is characterized in that fluidized-bed bottom is provided with gas distributor, inlet pipe and ash releasing tube, be provided with inlet pipe below the gas distributor, ash releasing tube is arranged in the center of gas distributor; Position apart from fluidized-bed bottom 500-6000mm is provided with opening for feed, is provided with the whirlwind-type air flow bed apart from the position of bottom 1000-2000mm, and the top is provided with one-level gas-solid separator and secondary gas-solid separator; The cinder circulation revert pipe of one-level gas-solid separator links to each other with fluidized-bed by material returning device, and the thin grey circulation revert pipe of secondary gas-solid separator links to each other with the whirlwind-type air flow bed by material returning device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202706127U CN201574143U (en) | 2009-11-20 | 2009-11-20 | Grading gasification furnace of powdered coal circulating fluidized bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202706127U CN201574143U (en) | 2009-11-20 | 2009-11-20 | Grading gasification furnace of powdered coal circulating fluidized bed |
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| Publication Number | Publication Date |
|---|---|
| CN201574143U true CN201574143U (en) | 2010-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009202706127U Expired - Fee Related CN201574143U (en) | 2009-11-20 | 2009-11-20 | Grading gasification furnace of powdered coal circulating fluidized bed |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102277200A (en) * | 2011-07-05 | 2011-12-14 | 舒克孝 | Method for preparing coal gas by virtue of pulverized coal grading gasification |
| WO2012048515A1 (en) * | 2010-10-14 | 2012-04-19 | Tai Xuelin | Composite process for powered coal gasification |
| CN102977929A (en) * | 2012-10-11 | 2013-03-20 | 田原宇 | Household garbage coupling fluidized bed hierarchical pyrolytic gasifier |
| CN102977928A (en) * | 2012-10-11 | 2013-03-20 | 田原宇 | Pulverized coal combined circulating fluidized bed hierarchical pyrolytic gasifier |
| CN103102990A (en) * | 2012-10-11 | 2013-05-15 | 田原宇 | Biomass abnormal circulating fluidized bed gasifier |
| CN108102720A (en) * | 2017-11-01 | 2018-06-01 | 中国石油大学(华东) | Fine coal composite fluidization bed classification gasification device |
| CN110791326A (en) * | 2019-11-21 | 2020-02-14 | 中国科学院工程热物理研究所 | Circulating fluidized bed gasification device with auxiliary gasification bed and gasification method |
-
2009
- 2009-11-20 CN CN2009202706127U patent/CN201574143U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012048515A1 (en) * | 2010-10-14 | 2012-04-19 | Tai Xuelin | Composite process for powered coal gasification |
| CN102277200A (en) * | 2011-07-05 | 2011-12-14 | 舒克孝 | Method for preparing coal gas by virtue of pulverized coal grading gasification |
| CN102977929A (en) * | 2012-10-11 | 2013-03-20 | 田原宇 | Household garbage coupling fluidized bed hierarchical pyrolytic gasifier |
| CN102977928A (en) * | 2012-10-11 | 2013-03-20 | 田原宇 | Pulverized coal combined circulating fluidized bed hierarchical pyrolytic gasifier |
| CN103102990A (en) * | 2012-10-11 | 2013-05-15 | 田原宇 | Biomass abnormal circulating fluidized bed gasifier |
| CN102977929B (en) * | 2012-10-11 | 2014-05-07 | 田原宇 | Household garbage coupling fluidized bed hierarchical pyrolytic gasifier |
| CN103102990B (en) * | 2012-10-11 | 2015-01-28 | 田原宇 | Biomass abnormal circulating fluidized bed gasifier |
| CN108102720A (en) * | 2017-11-01 | 2018-06-01 | 中国石油大学(华东) | Fine coal composite fluidization bed classification gasification device |
| CN110791326A (en) * | 2019-11-21 | 2020-02-14 | 中国科学院工程热物理研究所 | Circulating fluidized bed gasification device with auxiliary gasification bed and gasification method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100908 Termination date: 20101120 |