CN2430446Y

CN2430446Y - Bulking bed gas generating furnace

Info

Publication number: CN2430446Y
Application number: CN00208696U
Authority: CN
Inventors: 周景和
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-05-12
Filing date: 2000-05-12
Publication date: 2001-05-16
Anticipated expiration: 2010-05-12

Abstract

The utility model relates to a bulking bed gas generating furnace, the furnace body of which is full water jacket type. The utility model is characterized in that the inner wall of the furnace body is 'U'-shaped; a slant coal feeder, a coal preheater, a secondary gasifier and an air preheater are additionally arranged on the stove body of the prior art; a grate is changed into a scale-shaped tower type grate. Due to the design of the devices, the utility model has the advantages that the activity of coal can be enhanced, and the reaction can be accelerated; fine coal, powder-shaped coal can be gasified by the utility model (particularly the gasification of low grade coal); the coal can be fully reacted; the gasification intensity of the coal is enhanced; the environment is protected, and the labor strength of workers are lightened with the adoption of automatic wet ash removal; the utility model is an ideal gas generating furnace for low grade coal.

Description

Expanded bed producer gas generator

A kind of device with solid carbon-contg material production inflammable gas, particularly a kind of is raw material with broken coal inferior, face coal, is the expanded bed producer gas generator that vaporized chemical is made coal gas with water vapour and air.

The low grade coal producer gas generator of Chinese patent ZL95200649.9 has solved with coal cinder inferior and has made the coal gas problem.But because: 1. the coal cinder granularity is between 20～70mm, thereby the vaporized intensity of coal cinder is low, and raw material availability is low.2. grate (fire grate) has barrier, causes gasification to produce the dead band, and the gasification useful area is little.3. easily slagging scorification in the stove causes the vaporized chemical circulation not smooth, worsens gasification intensity.4. lime-ash overflows from ash-pan by ash-scraper, and the ash disposal resistance is big.5. the inboard wall of burner hearth place does not have vaporized chemical and flows through, and makes the coal combustion gasification insufficient, easily produces black coal.

The purpose of this utility model is to overcome the weak point in the above-mentioned technical background, provides a kind of usefulness face coal inferior, fine coal manufacturing coal gas, and the gasification intensity height, the no dead band of gasifying, coal supply, the high expanded bed producer gas generator of slagging-off automatization.

Expanded bed producer gas generator of the present utility model has full water jacket furnace to prior art, and have supporting leg, manhole, fire exploring hole, gas exit, steam delivery line, water jacket water inlet pipe and blow-off pipe on the body of heater, have low grade coal producer gas generator that ash-scraper and vaporized chemical enter burner hearth by grate on the grate and improve and be achieved.Its improvement is characterised in that described full water jacket furnace inwall is Type.Be built-in with an airheater along the furnace water jacket annular chamber.Upper of furnace body is equipped with oblique stoker and blends preheating device.The second gasification device is equipped with in the body of heater bottom, and second gasification device bottom and stove skirt are fixed, and stove skirt and ash-pan are fixed.Ash-pan is provided with the lime-ash outlet pipe, and the lime-ash outlet pipe links to each other with the lime-ash handling machinery.The ash-pan upper end has a seal cover board.Transmission mechanism promotes gear ring by pendulum melon thruster and rotates, and gear ring drives the grate rotation, and grate rotates relative to ash-pan.

Oblique stoker is fixed on blends preheating device top, and oblique stoker is made of plate-turning door, coal chamber, coal valve and coal gas escape pipe.The blends preheating device is by preheating chamber and put the coal valve and constitute.The second gasification device is made up of give vent to anger plate, gas orifice and ash damper of ring-type gas-distributing pipe, taper.Grate is made up of base, the ventilative body of fish scale, back-up ring, gas orifice, internal layer syphon trap, flap, ash-scraper and rinforcement bar.Grate has several layers, and each layer of the grate of several layers all is equipped with the ventilative body of a fish scale, and the ventilative body of each fish scale constitutes by some flaps.Grate bottom air inlet place has a general mood average rate body.The relative body of heater medullary ray of stove skirt has a cone angle, and is the divergent contour installation.

Expanded bed producer gas generator of the present utility model has been expanded the industrial applicability of broken coal inferior, face coal, having solved gasifies in the vapourizing furnace burner hearth commonly used the dead band, pneumatization is little, and the inboard wall of burner hearth edge does not have vaporized chemical and flows through, and various common faults such as easily slagging scorification, ash disposal difficulty.In addition,, both improved energy utilization rate, improved coal gasification intensity again because coal and air have been carried out preheating.It is the producer gas generator that a kind of ideal is made coal gas.

Provide embodiment of the present utility model below in conjunction with accompanying drawing;

Fig. 1 is expanded bed producer gas generator configuration diagram

Fig. 2 is the grate front view

Fig. 3 is the grate vertical view

Fig. 4 is the air preheater sectional view

Fig. 5 is the air preheater vertical view

Fig. 6 is the taper plate front view of giving vent to anger

Fig. 7 is the taper plate vertical view of giving vent to anger

Fig. 8 is a general mood average rate body front view

Fig. 9 is a general mood average rate body vertical view

Referring to Fig. 1 to Fig. 9.Expanded bed producer gas generator of the present utility model, body of heater are that an outer wall is cylindrical, and inwall is

The full water jacket body of shape.Furnace roof portion is provided with fire exploring hole 23, steam delivery line 33.Oblique stoker and blends preheating device also are installed on the furnace roof.Oblique stoker is made of turnover panel 1, coal chamber 2, coal valve 3 and coal gas escape pipe 24.The blends preheating device is by preheating chamber 5 and put coal valve 4 and constitute.Coal valve 3 and put coal valve 4 and be fixed together by ring flange, and by hydrostatic control.Coal charge can enter coal chamber 2 from plate-turning door 1, enters preheating chamber 5 by coal valve 3, enters burner hearth by putting coal valve 4 at last.Body of heater 6 sidewalls are provided with manhole 8 and gas exit 22.Be provided with an airheater 7 that is annular in the water-jacket space of body of heater 6.Airheater 7 has an inlet mouth and an air outlet.Body of heater 6 bottoms are provided with the water inlet pipe and the blow-off pipe of water jacket.The waste heat of water makes it to heat up in air drawn body of heater 6 water jackets in the airheater 7.The second gasification device is equipped with in body of heater 6 bottoms.The second gasification device is made up of give vent to anger plate 21, gas orifice 28 and ash damper 20 of ring-type gas-distributing pipe 9, taper.Be fixed with stove skirt 34 below the second gasification device.Stove skirt 34 is fixing with ash-pan 16.A lime-ash outlet pipe 36 is arranged at ash-pan 16 bottoms.This outlet pipe links to each other with defeated slag device 13.There is a seal cover board 35 ash-pan 16 upper ends.Water is housed in the ash-pan 16 carries out wet ash removal.Grate 10 seals by internal layer syphon trap 29, outer syphon trap 30.Its ash-pan 16 of expanded bed producer gas generator of the present utility model is motionless, and grate 10 rotates.The rotation of grate 10 is finished by transmission mechanism.Transmission mechanism promotes gear ring 14 by pendulum melon thruster 18 and rotates, and gear ring 14 drives grate 10 and rotates on bearing 15.Grate 10 is equipped with a general mood average rate body 11 with threeway riser 12 junctions.Grate 10 is made up of base 25, the ventilative body 26 of fish scale, back-up ring 27, gas orifice 28, internal layer syphon trap 29, flap 31, ash-scraper 19 and rinforcement bar 32.Grate 10 cone angles are 110 °, have 11 layers.Each layer of grate 10 all is equipped with the ventilative body 26 of a fish scale, and the ventilative body 26 of each fish scale constitutes by some flaps 31.General mood average rate body 11 is fixed on the threeway Steam Pipe 12.Have annular pore on the general mood average rate body 11, vaporized chemical becomes mild by general mood average rate body 11 back flow velocitys.

(particle is that 0.5～6mm) time enters expanded bed producer gas generator burner hearth from oblique stoker and the blends preheating device that is subjected to hydrostatic control at certain intervals for broken coal inferior, face coal.Because body of heater 6 upper diameter are big, lower diameter is little, and blast weakens from the bottom to top gradually, causes the big coal grain of quality to be in the bottom, and the coal grain that quality is little is in top, and this existing way of coal grain helps the expanded of coal, makes the gasification of size particles coal uniformity ground.The second gasification device solves stove inner edge wall place coal grain activity low, can not full entry reaction, the problem that the coal utilization ratio is low.After broken coal inferior, face coal enter body of heater, by the vaporized chemical that enters from grate 10 and second gasification device in the bottom and around stir.All coal charges all are wrapped in by vaporized chemical on the one hand, have increased the reaction area of coal charge, simultaneously clinkering rate are greatly reduced.Owing in advance the air of coal charge and vaporized chemical is heated, the activity of coal charge and vaporized chemical is improved on the other hand, be swift in response, coal charge can gasify rapidly under the high temperature carbonization situation, coal charge obtains filling and part activates, and has improved coal gasification intensity greatly.Material coal in the coal gas manufacturing neither solidifies also not fluidisation, make expanded, be gasificated as reality.

Claims

1, a kind of full water jacket furnace, and have supporting leg, manhole, fire exploring hole, gas exit, steam delivery line, water jacket water inlet pipe and blow-off pipe on the body of heater, have ash-scraper on the grate, vaporized chemical enters the expanded bed producer gas generator of burner hearth by grate, it is characterized in that described full water jacket furnace inwall is

Type, be built-in with an airheater along the furnace water jacket annular chamber, upper of furnace body is equipped with oblique stoker and blends preheating device, and the second gasification device is equipped with in the body of heater bottom, second gasification device bottom and stove skirt are fixed, stove skirt and ash-pan are fixed, and a lime-ash outlet pipe is arranged on the ash-pan, and the lime-ash outlet pipe links to each other with the lime-ash handling machinery, the ash-pan upper end has a seal cover board, transmission mechanism promotes gear ring by pendulum melon thruster and rotates, and gear ring drives the grate rotation, and grate rotates relative to ash-pan.

2, by the described expanded bed producer gas generator of claim 1, it is characterized in that oblique stoker is fixed on blends preheating device top, oblique stoker is made of plate-turning door, coal chamber, coal valve and coal gas escape pipe, the blends preheating device is by preheating chamber and put the coal valve and constitute, and the second gasification device is made up of give vent to anger plate, gas orifice and ash damper of ring-type gas-distributing pipe, taper.

3, by claim 1 or 2 described expanded bed producer gas generators, it is characterized in that grate is made up of the ventilative body of base, fish scale, back-up ring, gas orifice, internal layer syphon trap, flap, ash-scraper and rinforcement bar, each layer of several layers grate all is equipped with the ventilative body of a fish scale, the ventilative body of each fish scale constitutes by some flaps, and grate bottom air inlet place has a general mood average rate body.

4, by the described expanded bed producer gas generator of claim 3, it is characterized in that the relative body of heater medullary ray of stove skirt has a cone angle, and be the divergent contour installation.