CN203079923U - Coal water slurry pressurized gasification device for water wall waste boiler process - Google Patents
Coal water slurry pressurized gasification device for water wall waste boiler process Download PDFInfo
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- CN203079923U CN203079923U CN2013200427101U CN201320042710U CN203079923U CN 203079923 U CN203079923 U CN 203079923U CN 2013200427101 U CN2013200427101 U CN 2013200427101U CN 201320042710 U CN201320042710 U CN 201320042710U CN 203079923 U CN203079923 U CN 203079923U
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- Prior art keywords
- coal
- slurry
- combustion chamber
- water
- vapourizing furnace
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
The utility model relates to a coal water slurry pressurized gasification device for a water wall waste boiler process. The coal water slurry pressurized gasification device for a water wall waste boiler process comprises a coal slurry preparing and conveying mechanism and a pressurized gasification mechanism, wherein the coal slurry preparing and conveying mechanism is composed of a coal milling water tank, a coal milling machine, a coal slurry buffer slot, a coal slurry pump and a coal slurry delivery pipeline, the pressurized gasification mechanism is composed of a gasification furnace combustion chamber, a gasification furnace nozzle, a radiation waste heat recycling boiler and a convection waste heat recycling boiler, the gasification furnace nozzle is respectively arranged at the top of the gasification furnace combustion chamber, the gasification furnace nozzle is communicated with the interior of the gasification furnace combustion chamber, the coal slurry delivery pipeline is connected with the gasification furnace nozzle, the lower part of the gasification furnace combustion chamber is directly connected with the radiation waste heat recycling furnace, a gas outlet is formed at the upper part of the radiation waste heat recycling boiler, and the convection waste heat recycling boiler is communicated with the gas outlet. By adopting the technical scheme, feeding in a coal water slurry three-dimensional collision manner and coal gas waste heat recycling are realized, so that a gasification system can save more energy, efficiency of cooled coal gas is higher, and the coal water slurry pressurized gasification device can be better applicable to a gasification process of various coals.
Description
Technical field
The utility model relates to a kind of Coal-water Slurry Pressurized Gasification Unit, particularly relates to a kind of Coal-water Slurry Pressurized Gasification Unit to the energy-efficient water wall pot destroying process after the existing Coal-water Slurry Pressurized Gasification Unit improvement.
Background technology
At present, air flow bed water coal slurry pressure gasification technology is many both at home and abroad, using more in Coal Chemical Industry is technology such as Texaco, polynary slurry, multi-nozzle, these technology common features are at first to produce coal slurry, coal water slurry is transported in the vapourizing furnace through pressurization back and vaporized chemical oxygen together, at high temperature coal slurry carries out unburnt gasification reaction, produces the industrial gas based on carbon monoxide and hydrogen; Coal in vapourizing furnace, carry out anoxycausis and and water vapour react, carbon in the coal is by the solid-state gaseous compound that is converted into, ash in the coal is owing to can't just flow out from the vapourizing furnace combustor exit with the molten state form by gasification, and combustion, and cool off the shock chamber that enters into vapourizing furnace; In the prior art, the vapourizing furnace of several gasification technologies all adopts firebrick structure to protect cylindrical shell with the opposing hyperthermia radiation.
A lot of reactions can take place in coal in vapourizing furnace, its principal reaction equation is:
①C+O
2＝CO
2+395.2KJ/mol；
②C+0.5O
2＝CO+110.5KJ/mol；
③CO+0.5O
2＝CO
2+284.1KJ/mol；
④CO+H
2O＝CO
2+H
2+41.2KJ/mol；
⑤C+2H
2＝CH
4+75.2KJ/mol；
⑥CO
2+C＝2CO-173.0KJ/mol；
⑦C+H
2O＝CO+H
2-131.9KJ/mol；
⑧C+2H
2O＝CO
2+2H
2-90.3KJ/mol。
The heat of vapourizing furnace is mainly from burning of coal, perfect combustion will generate carbonic acid gas, incomplete combustion produces carbon monoxide, every mole of carbon perfect combustion liberated heat manys 284.7KJ than incomplete combustion, under the prerequisite that guarantees vapourizing furnace demand heat, just must save the living carbon monoxide of heat fecund in order to obtain more carbon monoxide, reduce carbon dioxide generating.
But, the single burner gasification furnace structure of overhead is owing to single overhead burner reason causes the vapourizing furnace combustion chamber to have the recirculating zone in the prior art, the vapourizing furnace bags does not make full use of, and has the recirculating zone to exist in addition and causes reaction not exclusively, the effective pneumatolytic branch of coal gas (CO+H
2) on the low side.Also have and since the single burner gasification furnace structure of overhead coal feeding amount when excessive atomizing effect relatively poor, react not exclusively not thorough, the effective pneumatolytic branch of coal gas (CO+H
2) on the low side, so coal feeding amount is subjected to certain limitation.
Though four nozzle water coal slurry pressure gasification technology have solved recirculating zone and coal feeding amount minor issue, because it is a horizontal-jet, the vapourizing furnace furnace roof often is subjected to fusion flying dust and high temperature erosion, and top stove brick can't long-term operation.
Also have, vapourizing furnace adopts firebrick structure only to be fit to the gasification of low ash smelting point coal, and subject range is less.
Moreover, existing coal water slurry gasification process using chilling process enters the shock chamber from the vapourizing furnace combustor exit, and the direct water Quench of about 1300 degree of heating gas is cooled to about 250 degree, the heating gas sensible heat has slatterned, and this part heat accounts for cold gas efficiency 15～20% greatly.
The prior art coal feeding amount is little, atomizing effect is poor in order to overcome, coal subject range is little and the heating gas waste heat does not reclaim drawback and need develop a kind of novel energy-efficient water coal slurry pressure gasification technology, to remedy the deficiencies in the prior art.
The utility model content
In view of this, the utility model mainly provides a kind of Coal-water Slurry Pressurized Gasification Unit of water wall pot destroying process, pass through the technical program, improvement and raising to existing several Coal-water Slurry Pressurized Gasification Unit, use the technical program and not only solved single stove coal feeding amount minor issue, several bursts of chargings simultaneously bump, and have further improved atomizing effect, have adopted the heat recovery boiler system to cause cold gas efficiency higher in addition.
In order to achieve the above object, the technical solution of the utility model is achieved in that a kind of Coal-water Slurry Pressurized Gasification Unit of water wall pot destroying process, include coal slurry and prepare transfer mechanism and pressurized gasification mechanism composition, described coal slurry prepares transfer mechanism by the coal-grinding tank, coal pulverizer, the coal slurry dashpot, coal slurry pump and coal slurry line of pipes constitute, described pressurized gasification mechanism is by the vapourizing furnace combustion chamber, gasifier nozzle, radiation heat recovery boiler and convection current heat recovery boiler constitute, described gasifier nozzle is separately positioned on the vapourizing furnace top of combustion chamber, gasifier nozzle communicates with inside, vapourizing furnace combustion chamber, described coal slurry line of pipes links to each other with gasifier nozzle, below, described vapourizing furnace combustion chamber directly links to each other with the radiation heat recovery boiler, described radiation heat recovery boiler top is provided with pneumatic outlet, and described convection current heat recovery boiler is connected with pneumatic outlet.
Described gasifier nozzle links to each other with the high pressure oxygen pipeline.
A gasifier nozzle is arranged on the top, top of described vapourizing furnace combustion chamber, two other or four gasifier nozzles are oppositely arranged on vapourizing furnace top of combustion chamber sidewall in pairs, be positioned at the gasifier nozzle of top sidewall, employing is oppositely arranged several bursts of chargings is run foul of each other at vertical surface, do not injure vapourizing furnace combustion chamber inwall, the coal slurry atomizing is better in the vapourizing furnace combustion chamber.
The inwall of vapourizing furnace combustion chamber adopts water wall structure in the described pressurized gasification mechanism.
Be provided with heat transfer tube in the described convection current heat recovery boiler, the S-type dish of described heat transfer tube is put setting.
The bottom of described radiation heat recovery boiler is provided with slag bath, is provided with lock hopper below slag bath, and dragveyer is arranged on the lock hopper bottom.
The utility model is when work, 1. raw coal and water enter the coal water slurry grinding machine jointly and produce coal water slurry through grinding, coal water slurry enters the storage of coal water slurry storage tank, send into gasifier nozzle through coal water slurry pump pressurization back by the high pressure water coal slurry pipeline afterwards, enter the vapourizing furnace combustion chamber by gasifier nozzle at last the anoxycausis reaction takes place; 2. the hyperbaric oxygen tracheae alignment vapourizing furnace input oxygen that described gasifier nozzle is connected atomizes coal water slurry simultaneously; Violent chemical reaction at high temperature takes place in 3. described coal water slurry and high pressure oxygen, and generating carbon monoxide and hydrogen is main industrial gas; 4. described industrial heating gas successively enters the radiation heat recovery boiler by the vapourizing furnace combustor exit and the convection current heat recovery boiler carries out the recovery of heating gas sensible heat, and the coal gas behind the recovery waste heat leaves from the outlet of convection current heat recovery boiler and enters next workshop section.
Beneficial effect after the employing technique scheme is: a kind of Coal-water Slurry Pressurized Gasification Unit of water wall pot destroying process, pass through the technical program, 1. owing to adopted a plurality of burner chargings, improved the coal feeding amount of separate unit stove simultaneously by a relatively large margin at the atomizing effect that guarantees single burner; In addition, because burner adopts the vertical surface feeding manner, not only guaranteed the cycle of stove vault thermal insulation layer, simultaneously because several bursts of chargings run foul of each other at vertical surface, the coal slurry atomizing is better, reacts more complete, and the effective gas of only this item just can increase by 1～2%; 2. vapourizing furnace combustion chamber adiabatic method adopts water wall structure, the hot wall stove of firebrick structure can better adapt to the coal of different ash fusion points relatively, in addition because water wall structure is bigger with respect to the firebrick structure vapourizing furnace bags, reaction time is longer, helps improving effective gas content; 3. the industrial heating gas that forms after the combustion reactions under anaerobic environment of coal water slurry successively enters radiation heat recovery boiler and convection current heat recovery boiler by the vapourizing furnace combustor exit and carries out the heating gas sensible heat and reclaim, and the heat of recovery is equivalent to cold gas efficiency and has improved 15-20%.
Description of drawings
Fig. 1 is an one-piece construction synoptic diagram of the present utility model.
Among the figure, 1 coal-grinding tank, 2 feed coals, 3 coal pulverizers, 4 coal slurry dashpots, 5 coal slurry pumps, 6 coal slurry line of pipes, 7 high pressure oxygen pipelines, 8 gasifier nozzles, 9 vapourizing furnace combustion chambers, 10 radiation heat recovery boilers, 11 data feedback channels, 12 water wall structures, 13 slag baths, 14 convection current heat recovery boilers, 15 lock hoppers, 16 dragveyers, 17 heat transfer tubes, 18 pneumatic outlets, 19 down going channels.
Embodiment
Below in conjunction with accompanying drawing specific embodiment in the utility model is described in further detail.
As shown in Figure 1, the Coal-water Slurry Pressurized Gasification Unit of the water wall pot destroying process that utility model relates to, include coal slurry and prepare transfer mechanism and pressurized gasification mechanism composition, described coal slurry prepares transfer mechanism by coal-grinding tank 1, coal pulverizer 3, coal slurry dashpot 4, coal slurry pump 5 and coal slurry line of pipes 6 constitute, described pressurized gasification mechanism is by vapourizing furnace combustion chamber 9, gasifier nozzle 8, radiation heat recovery boiler 10 and convection current heat recovery boiler 14 constitute, described gasifier nozzle 8 is separately positioned on 9 tops, vapourizing furnace combustion chamber, gasifier nozzle 8 communicates with 9 inside, vapourizing furnace combustion chamber, described coal slurry line of pipes 6 links to each other with gasifier nozzle 8,9 belows, described vapourizing furnace combustion chamber directly link to each other with radiation heat recovery boiler 10, described radiation heat recovery boiler 10 tops are provided with pneumatic outlet 18, and described convection current heat recovery boiler 14 is connected with pneumatic outlet 18.
Described gasifier nozzle 8 links to each other with high pressure oxygen pipeline 7.
A gasifier nozzle 8 is arranged on the top, top of vapourizing furnace combustion chamber 9, two other gasifier nozzle 8 is oppositely arranged on vapourizing furnace combustion chamber 9 top sidewalls in pairs, be positioned at the gasifier nozzle 8 of top sidewall, employing is oppositely arranged several bursts of chargings is run foul of each other at vertical surface, do not injure vapourizing furnace combustion chamber 9 inwalls, the coal slurry atomizing is better in the vapourizing furnace combustion chamber 9.
The inwall of vapourizing furnace combustion chamber 9 adopts water wall structure 12 in the described pressurized gasification mechanism.
Be provided with heat transfer tube 17 in the described convection current heat recovery boiler 14, described heat transfer tube 17 S-type dishes are put setting.
The bottom of described radiation heat recovery boiler 10 is provided with slag bath 13, is provided with lock hopper 15 below slag bath 13, and dragveyer 16 is arranged on lock hopper 15 bottoms.
Embodiment of the present utility model carries out work according to the following steps.
1. the water of feed coal after the fragmentation 2 and coal-grinding tank 1 is sent to coal pulverizer 3, the common grinding made the finite concentration coal water slurry, enters the vapourizing furnace combustion chamber 9 of water wall structure 12 then by gasifier nozzle 8 along coal slurry line of pipes 6 through coal slurry dashpot 4, coal slurry pump 5;
2. the high pressure oxygen pipeline 7 input oxygen that are connected with gasifier nozzle 8 enter vapourizing furnace combustion chamber 9;
3. coal water slurry and high pressure oxygen enter the vapourizing furnace combustion chamber 9 of water wall structure 12 by gasifier nozzle 8, under the environment of High Temperature High Pressure, violent gasification reaction takes place in coal water slurry and oxygen, generation is based on the industrial gas of carbon monoxide and hydrogen, heating gas enters radiation heat recovery boiler 10 by the below of vapourizing furnace combustion chamber 9 again, through down going channel 19 recovery part heats; Radiation heat recovery boiler 10 is by thermal radiation form recovery part heating gas sensible heat, and the fused ash falls under gravity in the slag bath 13 of radiation heat recovery boiler 10 process lock hopper 15 and dragveyer 16 discharges at last because the temperature reduction is frozen into solid; The coal gas that has reclaimed the part heat turns around along the data feedback channel 11 of radiation heat recovery boiler 10 when arriving slag bath 13 surfaces, reclaim heat by the radiation second time after, enter convection current heat recovery boiler 14 tops through pneumatic outlet 18; Descending along heat transfer tube 17 coileds " S " the type heat exchanger channels of convection current heat recovery boiler 14 then, obtain once more reclaiming through thermal convection form heat, the coal gas that has reclaimed goes out from convection current heat recovery boiler 14 bottoms, enters next section operation.
In sum, the technical solution of the utility model, through the three-dimensional collision of three-dimensional charging, the coal water slurry atomizing effect is better, reacts more abundant, has avoided the problem of conventional coal gasifier recirculating zone; Guaranteeing under the atomizing effect situation that increase because the multiply charging can realize separate unit vapourizing furnace coal feeding amount, production intensity is bigger.
The utility model is owing to adopted vapourizing furnace combustion chamber water wall structure, and bigger with respect to the firebrick structure reaction compartment, reaction time extends, and efficiency of carbon conversion is higher, and owing to adopted water wall structure 12, vapourizing furnace adapts to high ash melting point coal seed more; Because the most of sensible heat of heating gas is by the recovery of radiation heat recovery boiler 10 and convection current heat recovery boiler 14, cold gas efficiency improves 15～20%.
The above is a preferred embodiments of the present utility model only, is not to be used to limit protection domain of the present utility model.
Claims (6)
1. the Coal-water Slurry Pressurized Gasification Unit of a water wall pot destroying process, it is characterized in that, include coal slurry and prepare transfer mechanism and pressurized gasification mechanism composition, described coal slurry prepares transfer mechanism by the coal-grinding tank, coal pulverizer, the coal slurry dashpot, coal slurry pump and coal slurry line of pipes constitute, described pressurized gasification mechanism is by the vapourizing furnace combustion chamber, gasifier nozzle, radiation heat recovery boiler and convection current heat recovery boiler constitute, described gasifier nozzle is separately positioned on the vapourizing furnace top of combustion chamber, gasifier nozzle communicates with inside, vapourizing furnace combustion chamber, described coal slurry line of pipes links to each other with gasifier nozzle, below, described vapourizing furnace combustion chamber directly links to each other with the radiation heat recovery boiler, described radiation heat recovery boiler top is provided with pneumatic outlet, and described convection current heat recovery boiler is connected with pneumatic outlet.
2. the Coal-water Slurry Pressurized Gasification Unit of water wall pot destroying process according to claim 1 is characterized in that, described gasifier nozzle links to each other with the high pressure oxygen pipeline.
3. the Coal-water Slurry Pressurized Gasification Unit of water wall pot destroying process according to claim 1 and 2, it is characterized in that, a gasifier nozzle is arranged on the top, top of described vapourizing furnace combustion chamber, and two other or four gasifier nozzles are oppositely arranged on vapourizing furnace top of combustion chamber sidewall in pairs.
4. the Coal-water Slurry Pressurized Gasification Unit of water wall pot destroying process according to claim 1 is characterized in that, the inwall of vapourizing furnace combustion chamber adopts water wall structure in the described pressurized gasification mechanism.
5. the Coal-water Slurry Pressurized Gasification Unit of water wall pot destroying process according to claim 1 is characterized in that, is provided with heat transfer tube in the described convection current heat recovery boiler, and the S-type dish of described heat transfer tube is put setting.
6. the Coal-water Slurry Pressurized Gasification Unit of water wall pot destroying process according to claim 1 is characterized in that, the bottom of described radiation heat recovery boiler is provided with slag bath, is provided with lock hopper below slag bath, and dragveyer is arranged on the lock hopper bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200427101U CN203079923U (en) | 2013-01-28 | 2013-01-28 | Coal water slurry pressurized gasification device for water wall waste boiler process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200427101U CN203079923U (en) | 2013-01-28 | 2013-01-28 | Coal water slurry pressurized gasification device for water wall waste boiler process |
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| Publication Number | Publication Date |
|---|---|
| CN203079923U true CN203079923U (en) | 2013-07-24 |
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ID=48825781
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| CN2013200427101U Expired - Fee Related CN203079923U (en) | 2013-01-28 | 2013-01-28 | Coal water slurry pressurized gasification device for water wall waste boiler process |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104312633A (en) * | 2014-10-24 | 2015-01-28 | 清华大学 | Overhead multi-nozzle gasifier |
| CN106118752A (en) * | 2016-08-30 | 2016-11-16 | 安徽科达洁能股份有限公司 | A kind of coal gasifier |
| CN106701204A (en) * | 2017-02-10 | 2017-05-24 | 虎涛 | Coal gasification system with coal water slurry atomization enhancer |
| CN109652143A (en) * | 2019-02-20 | 2019-04-19 | 宁夏神耀科技有限责任公司 | A kind of useless pot dry coal powder airflow bed structure of more burner uplink radiations |
| CN110229699A (en) * | 2019-07-18 | 2019-09-13 | 陕西德信祥能源科技有限公司 | Powder coal gasification furnace and gasification process with deflector type bilateral tube panel radiation waste pot |
-
2013
- 2013-01-28 CN CN2013200427101U patent/CN203079923U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104312633A (en) * | 2014-10-24 | 2015-01-28 | 清华大学 | Overhead multi-nozzle gasifier |
| CN106118752A (en) * | 2016-08-30 | 2016-11-16 | 安徽科达洁能股份有限公司 | A kind of coal gasifier |
| CN106701204A (en) * | 2017-02-10 | 2017-05-24 | 虎涛 | Coal gasification system with coal water slurry atomization enhancer |
| CN109652143A (en) * | 2019-02-20 | 2019-04-19 | 宁夏神耀科技有限责任公司 | A kind of useless pot dry coal powder airflow bed structure of more burner uplink radiations |
| CN110229699A (en) * | 2019-07-18 | 2019-09-13 | 陕西德信祥能源科技有限公司 | Powder coal gasification furnace and gasification process with deflector type bilateral tube panel radiation waste pot |
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| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20130724 Termination date: 20140128 |