CN202849350U - Entrained-flow bed gasifier chilling device with function of preventing slag blockage - Google Patents
Entrained-flow bed gasifier chilling device with function of preventing slag blockage Download PDFInfo
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- CN202849350U CN202849350U CN201220438149.4U CN201220438149U CN202849350U CN 202849350 U CN202849350 U CN 202849350U CN 201220438149 U CN201220438149 U CN 201220438149U CN 202849350 U CN202849350 U CN 202849350U
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- slag
- shock chamber
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- quench
- quench chamber
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Abstract
The utility model discloses an entrained-flow gasifier chilling device with function of preventing slag blockage, which comprises a quench chamber connected with a slag hole formed in the bottom of a vaporizing chamber, wherein a gas guide pipe is arranged on the quench chamber; the tail end of the gas guide pipe is provided with a synthesis gas outlet; the bottom of the quench chamber is provided with a slag bath; a chilling water inlet is formed below the quench chamber and positioned above one side of the slag bath, and a black water outlet is formed in the other side of the slag bath. The entrained-flow gasifier chilling device is characterized in that an upright cylindrical pressure-bearing shell is arranged at the outer sides of the vaporizing chamber and the quench chamber, and is connected with the slag bath; the top of the quench chamber is provided with at least two chilling gas spray pipes; the outer end of each chilling gas spray pipe is provided with a chilling gas inlet which is exposed from the pressure-bearing shell; and the quench chamber is internally provided with ring-shaped baffles, and a ring-shaped channel is formed by the ring-shaped baffles and the inner wall of the quench chamber. According to the entrained-flow gasifier chilling device, the structure of the quench chamber is simplified, and refractory bricks of the quench chamber are protected from being scoured and subjected to scorification by ash, so that slag blockage can be reduced; and furthermore, synthesis gas is cooled by chilling gas instead of being cooled by water, so that the heat loss of the synthesis gas can be reduced.
Description
Technical field
The utility model provides a kind of airflow bed gasification furnace chilling device with anti-blocking slag function.
Background technology
Extensive pressurized entrained-bed Coal Gasification Technology has become important channel and the developing direction of coal in China cleaning, Efficient Conversion, and save energy, minimizing greenhouse gas emission are of great practical significance and strategic importance.
The shock chamber is as the vital equipment that is connected as a single entity with vapourizing furnace, the process for cooling of carrying synthetic gas, and its structure design and the Quench method that adopts have very important impact to whole air-flow journey.
The gasification product type of cooling of industrial application is generally divided chilling process and pot destroying process.The shock chamber mainly is columnar structured in the chilling process, forms concentric(al) circles by downtake, upcast, bearing shell from inside to outside, has simultaneously the primary members such as chilling ring and traverse baffle.The Quench method that adopts mainly is to make synthetic gas, ash, slag by bottom, shock chamber chilled water, thereby the lime-ash of the high-temperature synthesis gas that the vapourizing furnace vaporizer is produced, flying dust, molten state carries out preliminary scrubbing dust collection and cooling.Such Quench method is brought the problems such as synthetic band of gas water, chilling ring stop up, downtake easily burns usually, and heat mainly enters water circulation system in this technological process, and thermosteresis is larger.The pot destroying process gasification technology refers to utilize radiation formula and convection type waste heat boiler to reclaim to greatest extent sensible heat in the synthetic gas, with production high pressure steam or other processing medium of preheating.But usually cause owing to radiant coolers internal passages area is less that slagging scorification block up slag, scattering can occur in slag when outflow vaporizer cinder notch, and some touches on the internal layer water wall in the process of decline.Above when not completely crued slag touches water wall, will being bonded in, and accumulate gradually, stop up the decline passway of whole process gas and slag, cause vapourizing furnace to stop.Simultaneously owing to used radiation formula and convection type waste heat boiler, so equipment is complicated, and initial cost strengthens.
Although on the basis of updating, progressively solved some problems at present, also be necessary shock chamber's internal structure and Quench method are updated and innovated, to realize that this link is in the better optimization of whole gasification.
Summary of the invention
The problem that exists in order to solve prior art, the purpose of this utility model provides a kind of novel method for Quench vaporizer outlet synthetic gas and lime-ash, easily burn to overcome the existing synthetic band of gas water of present technology, downtake, the shortcoming such as the stifled slag of water wall slagging scorification, reduce production costs simultaneously.
In order to achieve the above object, the utility model provides a kind of airflow bed gasification furnace chilling device with anti-blocking slag function, comprise the shock chamber that is connected with the cinder notch of vaporizer bottom, the shock chamber is provided with airway, the end of airway is provided with syngas outlet, the bottom, shock chamber is provided with slag bath, the below, shock chamber is provided with the chilled water entrance, be positioned at slag bath one side top, the slag bath opposite side is provided with the Heisui River outlet, and the slag bath bottom is provided with slag-drip opening, it is characterized in that, the outside of described vaporizer and described shock chamber is provided with upright round shape bearing shell, is connected with described slag bath, and described airway exposes from pressure-bearing shell; The top, shock chamber is provided with at least 2 Quench gas blowout pipes, and the outer end of Quench gas blowout pipe is provided with Quench gas entrance, and Quench gas entrance exposes from bearing shell; Be provided with ring baffle in the shock chamber, the top of this ring baffle is positioned at the top of airway, and the bottom is positioned at the top of the slag bath water surface, and ring baffle and shock chamber's inwall form the circular channel.
Preferably, described shock chamber inwall is provided with fire brick layer.
Preferably, described Quench shower is provided with the spray micropore of different directions and bore.
Further, described spray micropore be shaped as circle, ellipse or Polygons, its diameter is 0.1 μ m～1000 μ m, quantity is not less than 1.
Preferably, described airway is provided with at least one buffering cavity.
Further, described buffering cavity is spheroid or nearly spheroid, and its inwall is smooth surface.
The utility model has changed the structure of traditional shock chamber, forms shock chamber's structure of cavity type, effectively prevents stifled slag.Usually scattering can occur in slag when flowing out the vaporizer cinder notch, and in the process that descends, some touches on the internal layer Quench locular wall in the gas backstreaming zone.Shock chamber's gas flowfield for a change reduces the gas backstreaming zone, avoids lime-ash directly to contact the Quench locular wall, and the utility model utilization has that the Quench gas blowout pipe of peculiar structure is jet to change synthetic gas flow field in the shock chamber, effectively prevents shock chamber's inwall slagging scorification.Adopt simultaneously the synthetic gas after subsequent technique purifies cooling process as Quench gas synthetic gas and the lime-ash that vaporizer generates to be carried out Quench, can reduce the synthetic band of gas water in shock chamber and thermosteresis.In order effectively to remove the lime-ash that synthetic gas is carried secretly, in the shock chamber, close and be provided with ring baffle, be provided with the buffering cavity that chi directly enlarges at airway.
The utility model has the advantages that:
1. the utility model adopts distinctive cavity type shock chamber structure, has stronger anti-blocking slag ability, and manufacturing, transportation, installation and maintenance are comparatively simple and convenient;
2. structure top, shock chamber of the present utility model is provided with micropore Quench gas blowout pipe, and synthetic gas and the lime-ash produced in the cool gasification chamber change the synthesis gas flow field velocity simultaneously, have reduced to greatest extent the probability that lime-ash deposits at the Quench locular wall;
3. bottom, shock chamber of the present utility model is provided with the pulp water pond, and the structure of cavity type is conducive to lime-ash and falls into slag bath, and when synthetic gas carries grey solid impurity particle behind ring baffle, most of lime-ash falls into slag bath, finishes the rough purification process in the synthetic gas shock chamber;
4. airway of the present utility model is provided with the buffering cavity, and synthetic gas clashes in the buffering cavity, forming section ash deposition, further decontaminating syngas;
5. the utility model Suitability of Coals is wide, to ash fusion point and deslagging mode require low.
Description of drawings
A kind of structural representation with airflow bed gasification furnace chilling device of anti-blocking slag function that Fig. 1 provides for the utility model;
Fig. 2 is the partial enlarged drawing of Quench gas blowout pipe.
Among the figure:
1, pressure-bearing shell; 2, vaporizer;
3, cinder notch; 4, shock chamber;
5, Quench gas entrance; 6, Quench gas blowout pipe;
7, ring baffle; 8, fire brick layer;
9, chilled water entrance; 10, slag bath;
11, slag-drip opening; 12, Heisui River outlet;
13, airway; 14, buffering cavity;
15, syngas outlet; 16, spray micropore.
Embodiment
For the utility model is become apparent, hereby with preferred embodiment, and cooperate accompanying drawing to be described in detail below.
Embodiment
As shown in Figure 1, a kind of structural representation with airflow bed gasification furnace chilling device of anti-blocking slag function that provides for the utility model, comprise the shock chamber 4 that is connected with the cinder notch 3 of vaporizer 2 bottoms, vaporizer 2 has overlapped a upright columnar bearing shell 1 with the outside of shock chamber 4, and bearing shell 1 bottom is connected with slag bath 10.4 tops, shock chamber are provided with 2 Quench gas blowout pipes 6, and the outer end of Quench gas blowout pipe 6 is provided with Quench gas entrance 5, and Quench gas entrance 5 exposes from bearing shell 1, are connected by pipeline with Quench gas.Open the spray micropore 16 of a plurality of different directions and bore on the Quench shower 6.The shape of spray micropore 16 can adopt circle, ellipse or Polygons, and its diameter is 0.1 μ m～1000 μ m.One side of shock chamber 4 connects airway 13, and the end of airway 13 is provided with syngas outlet 15, and syngas outlet 15 is exposed from pressure-bearing shell 1.Airway 13 is provided with 2 buffering cavitys 14.Buffering cavity 14 is spheroid or nearly spheroid, and its inwall is smooth surface.4 belows, shock chamber are provided with chilled water entrance 9, are positioned at slag bath 10 1 sides top, and slag bath 10 opposite sides are provided with Heisui River outlet 12, and slag bath 10 bottoms are provided with slag-drip opening 11.Be provided with the ring baffle 7 of symmetrical or asymmetric shape in the shock chamber 4, the top of this ring baffle 7 is positioned at the top of airway 13, and the bottom is positioned at the top of slag bath 10 waters surface, and ring baffle 7 forms the circular channel with shock chamber's 4 inwalls.Shock chamber's 4 inwalls adopt fire brick layer 8 structures.
Synthetic gas and lime-ash that burning produces are guided shock chamber 4 from vaporizer 2 into via cinder notch 3, in the shock chamber 4 tops by the Quench air cooling of Quench gas blowout pipe 6 ejections but, the slag bath 10 bottom the part lime-ash falls into.The synthetic gas and the lime-ash that produce in the cool gasification chamber change the synthesis gas flow field velocity simultaneously, have reduced to greatest extent the lime-ash probability that 4 walls deposit in the shock chamber.Ring baffle 7 adopts heat-resisting steel material, and it arranges around shock chamber's 4 fire brick layers 8, so that form the circular channel between ring baffle 7 and the fire brick layer 8.Cooled synthetic gas is conducted through this circular channel, and the buffering cavity 14 that enters airway 13 is further except the lime-ash of deentrainment.Discharge by the slag-drip opening 11 of 4 bottoms, shock chamber in high-temperature ash after Quench and part Heisui River, replenish into fresh water at low temperature from chilled water entrance 9, the water that part is carried lime-ash secretly flows out from Heisui River outlet 12, guarantees the Heisui River circulation of 4 bottoms, shock chamber and removes part lime-ash and heat.
Day output take coal as raw material is example as 1000 tons coal water slurry gasifying device, and vapor pressure is 6.5MPa, and gasification temperature is 1350 ℃, and dry gas productive rate amount is 85000N
3/ h, gasification per hour produces 5 tons of lime-ash approximately.Enter in the shock chamber 4 from the vaporizer 2 high temperature rough gas that is entrained with unreacted carbon granules and flying dust (1100～1300 ℃) out, Quench gas (200～300 ℃) through 6 ejections of Quench shower is cooled to high-temperature synthesis gas about 700～900 ℃, leaves vapourizing furnace from the vapourizing furnace syngas outlet and enters lower procedure.Lime-ash under synthetic gas flows to, carry secretly with action of gravity under, 85%～90% deposits in the pulp water pond, bottom, through after the buffering cavity 14 further ash disposal of airway 13, the flying dust of arrival syngas outlet only contains about 5%.This shows that the utility model is simple in structure, have stronger anti-blocking slag ability, and energy efficient recovery gas is obvious, can be used for producing take coal, biomass etc. as the unstripped gas fluidized bed expeditiously the Quench of coal gas.
Claims (6)
1. airflow bed gasification furnace chilling device with anti-blocking slag function, comprise the shock chamber (4) that is connected with the cinder notch (3) of vaporizer (2) bottom, shock chamber (4) is provided with airway (13), the end of airway (13) is provided with syngas outlet (15), bottom, shock chamber (4) is provided with slag bath (10), below, shock chamber (4) is provided with chilled water entrance (9), be positioned at slag bath (10) one sides top, slag bath (10) opposite side is provided with Heisui River outlet (12), slag bath (10) bottom is provided with slag-drip opening (11), it is characterized in that, described vaporizer (2) is provided with upright round shape bearing shell (1) with the outside of described shock chamber (4), be connected with described slag bath (10), described airway (13) exposes from pressure-bearing shell (1); Top, shock chamber (4) is provided with at least 2 Quench gas blowout pipes (6), and the outer end of Quench gas blowout pipe (6) is provided with Quench gas entrance (5), and Quench gas entrance (5) exposes from bearing shell (1); Be provided with ring baffle (7) in the shock chamber (4), the top of this ring baffle (7) is positioned at the top of airway (13), the bottom is positioned at the top of slag bath (10) water surface, and ring baffle (7) forms the circular channel with shock chamber (4) inwall.
2. a kind of airflow bed gasification furnace chilling device with anti-blocking slag function according to claim 1 is characterized in that, described shock chamber (4) inwall is provided with fire brick layer (8).
3. a kind of airflow bed gasification furnace chilling device with anti-blocking slag function according to claim 1 is characterized in that, described Quench shower (6) is provided with the spray micropore (16) of different directions and bore.
4. a kind of airflow bed gasification furnace chilling device with anti-blocking slag function according to claim 3, it is characterized in that, described spray micropore (16) be shaped as circle, ellipse or Polygons, its diameter is 0.1 μ m～1000 μ m, quantity is not less than 1.
5. a kind of airflow bed gasification furnace chilling device with anti-blocking slag function according to claim 1 is characterized in that, described airway (13) is provided with at least one buffering cavity (14).
6. a kind of airflow bed gasification furnace chilling device with anti-blocking slag function according to claim 6 is characterized in that, described buffering cavity (14) is spheroid or nearly spheroid, and its inwall is smooth surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220438149.4U CN202849350U (en) | 2012-08-30 | 2012-08-30 | Entrained-flow bed gasifier chilling device with function of preventing slag blockage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201220438149.4U CN202849350U (en) | 2012-08-30 | 2012-08-30 | Entrained-flow bed gasifier chilling device with function of preventing slag blockage |
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| CN202849350U true CN202849350U (en) | 2013-04-03 |
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| CN201220438149.4U Expired - Lifetime CN202849350U (en) | 2012-08-30 | 2012-08-30 | Entrained-flow bed gasifier chilling device with function of preventing slag blockage |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103232865A (en) * | 2013-04-28 | 2013-08-07 | 上海泽玛克敏达机械设备有限公司 | Chilling chamber of slack coal slag gasifying furnace |
| CN104593084A (en) * | 2014-12-23 | 2015-05-06 | 安徽科达洁能股份有限公司 | Gas generator |
| CN114891539A (en) * | 2022-05-07 | 2022-08-12 | 张金辉 | Coal gasification equipment |
-
2012
- 2012-08-30 CN CN201220438149.4U patent/CN202849350U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103232865A (en) * | 2013-04-28 | 2013-08-07 | 上海泽玛克敏达机械设备有限公司 | Chilling chamber of slack coal slag gasifying furnace |
| CN104593084A (en) * | 2014-12-23 | 2015-05-06 | 安徽科达洁能股份有限公司 | Gas generator |
| CN114891539A (en) * | 2022-05-07 | 2022-08-12 | 张金辉 | Coal gasification equipment |
| CN114891539B (en) * | 2022-05-07 | 2023-01-24 | 张金辉 | Coal gasification equipment |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130403 |
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| CX01 | Expiry of patent term |