CN202141310U - Drying system for fired generator gas - Google Patents

Abstract

The utility model relates to a drying system for fired generator gas. Aiming to effectively solve the problems of low heating capacity, instability, low heat efficiency, high energy consumption, low productivity, and long maintenance cycle, the utility model adopts the technical scheme that a gas producer, a combustor, and a dryer are included, wherein the gas pipe line of the gas producer is communicated with the gas inlet of a fast diffuse stop valve; the gas outlet of the fast diffuse stop valve is connected with the gas inlet of the mixed gas combustor, the gas outlet of the mixed gas combustor is connected with an inlet chamber of a flame-stabilizing and coal-sliding device, and the rear end of the flame-stabilizing and coal-sliding device is connected to the front end of the dryer. The utility model has high heat utilization efficiency, uniform heat supply, uniform water content in the discharged, convenience in maintenance, and long service life, and air and fuel gas are mixed in proportion in the combustor.

Description

The furnace burning producer gas drying system

Technical field

The utility model relates to drying plant, particularly a kind of furnace burning producer gas drying system.

Background technology

Coal slime oven dry industry flourish along with in recent years is for the energy development strategy of country provides good development to support the stacking, the pollution problem that have solved the coal washing industry coal slime; And exchanged the regeneration of a large amount of waste resources for less cost; Coal slime drying plant industry also is flourish in recent years, dog-eat-dog, but the problem that exists on the structure; Equipment performance is uneven, and configuration varianceization is big.The normal use is coal slime in the coal slime drying plant, and coal slime is a high moisture material, according to the length of pilling up time, and the difference water content of coal washing system process to have height to have low, general water content maintains between 18% to 30%; Coal slime is a combustible, and when water content was low, running into continuous high temperature (being higher than ignition temperature) can burn; Can reduce the coal slime calorific value like this, and increase the coal slime ash content, coal slime has big viscosity; Viscous is at the dryer barrel; It is very big not only to clear up difficulty, and makes the thermal efficiency of drying plant reduce greatly, causes high energy consumption to hang down production capacity.The water content of coal slime raw material is not a single stable, and the pilling up time of coal slime has length that weak point is arranged, and winter, summer be difference to some extent; Especially the north is more obvious, and same batch coal slime even upper and lower coal slime water content are all variant, and the principle of coal slime drying plant is; Moisture heat absorption becoming steam in the raw material could be extracted out by induced draught system and peel off, and the heat that the water of per kilogram is converted into the required absorption of steam is certain, and how much moisture content baking falls; Must import corresponding heat,, use traditional coal-fired machinery to do the equipment of thermal source so the thermal efficiency of drying system also is one of important indicator of decision drying plant production capacity; Heating load is low, heating load is unstable; Directly influence the performance of production capacity, often the thermal efficiency is not as good as 30%, and drying plant is a comparatively complicated system; Be to combine, possibly occur shutting down the situation of maintenance at any time by many electromechanics and plant equipment.Use the equipment of large-scale hot coal facilities such as fluidized bed furnace and chain grate furnace will realize that it is impossible thing that quick shutdown is safeguarded, shut down safeguard short then three or five days, long then ten days first quarter moons, thus improvement and innovate imperative.

Summary of the invention

To above-mentioned situation, for overcoming the prior art defective, the purpose of the utility model just provides a kind of furnace burning producer gas drying system, and it is low, unstable effectively to solve heating load, and the thermal efficiency is low, high energy consumption, low production capacity and the long problem of maintenance cycle.

The technical scheme that the utility model solves is to comprise gas generator, burner and dryer; The gas piping of gas generator and the gas inlet of diffusing stop valve fast are connected, and the gas exit that diffuses stop valve fast connects the gas entry of mixed gas burner, and the gas vent of mixed gas burner and steady flame slip the inlet plenum of materials device and link to each other; The front end of the back termination dryer of steady flame slide materials device; The described stop valve that diffuses fast comprises valve body, spool and fixed pulley group, and first pond is arranged at the bottom of valve body, and the bottom in first pond has the upper end to put in the gas pipe that advances of valve body; There is spool the upper end of advancing gas pipe; The assembly pulley support is arranged on the valve body, and the fixed pulley group on the assembly pulley support links to each other with spool through steel wire rope, and the counterweight tube is arranged on the steel wire rope other end.

The utility model efficiency of utilization is high, and heat supply is even, discharging moisture content uniformity, and maintenance is convenient, burner air, the proportional mixing of combustion gas, long service life.

Description of drawings

Fig. 1 is the structure vertical view of the utility model.

Fig. 2 is the structural front view of the utility model.

The structural front view that Fig. 3 diffuses stop valve fast for the utility model.

Fig. 4 diffuses the structure right side view of stop valve fast for the utility model.

Fig. 5 for the A-A of the utility model Fig. 3 to structure cutaway view (quitting work).

Fig. 6 diffuses the use working state schematic representation of stop valve fast when being the utility model gas generator operate as normal.

Fig. 7 is the structural front view of the utility model mixed gas burner.

Fig. 8 is that the B-B of the utility model Fig. 7 is to structural front view.

Fig. 9 is the structure cutaway view of the steady flame slide of the utility model materials device.

Figure 10 is the structure right view of the steady flame slide of the utility model materials device.

The specific embodiment

Elaborate below in conjunction with the specific embodiment of accompanying drawing to the utility model.

Provided by Fig. 1-Figure 10, the utility model comprises gas generator, burner and dryer, and the gas piping of gas generator 2 and the gas inlet of diffusing stop valve 4 fast are connected; The gas exit that diffuses stop valve fast connects the gas entry of mixed gas burner 8; The gas vent of mixed gas burner links to each other with the inlet plenum of steady flame slide materials device 10, the front end of the back termination dryer 12 of steady flame slide materials device, and the described stop valve 4 that diffuses fast comprises valve body, spool and fixed pulley group; First pond 3 is arranged at the bottom of valve body 1; What the bottom in first pond had that the upper end puts in valve body advances gas pipe 5, and there is spool 6 upper end of advancing gas pipe, and assembly pulley support 18 is arranged on the valve body; Fixed pulley group 19 on the assembly pulley support links to each other with spool 6 through steel wire rope 20, on steel wire rope 20 other ends counterweight tube 21 is arranged.

Described dryer 12 is used equipment for the mine, like whizzer or rotary drying machine, boiler induced-draft fan 13 is arranged on the rearward end of dryer 12, and boiler induced-draft fan is connected with electromagnetic varispeed motor 14, and there is conveyer belt 15 the discharging opening below of dryer; Described structure of diffusing stop valve 4 fast is, the bottom of valve body 1 is fixed on first pond 3, and the side wall upper part in first pond 3 has first upper hose 27 and overflow pipe 28 respectively; What the bottom in first pond had that the upper end puts in valve body advances gas pipe 5, and there is spool 6 upper end of advancing gas pipe, and the gas inlet 16 that links to each other with gas generator is arranged on the valve body; Vertical tube 17 is arranged at the top of valve body, on the valve body of vertical tube one side assembly pulley support 18 is arranged, and fixed pulley group 19 is arranged at the top of assembly pulley support; One end of the steel wire rope on the fixed pulley group links to each other with pull bar 22, and the other end has counterweight tube 21, and pull bar puts in valve body through vertical tube and is connected with spool; Fixed pulley group 19 is to be made up of two fixed pulleys, and described vertical tube 17 is top sealing, the tubulose of lower openings; The diameter of vertical tube is less than the width of spool; Diffuse mouth 23 on one sidewall of vertical tube, diffuse mouth and connect chimney, second upper hose 24 is arranged on the valve body; The structure of described spool 6 is; Last cylinder is fixed on the top of low groove; The center of last cylinder has and the shape of vertical tube, the upper groove that size is complementary, and low groove is sleeved on on the gas pipe, and the diameter of spool is greater than the diameter that advances gas pipe 5; Last cylinder is real stem stem body or hollow cylinder, water is housed in hollow; Described valve body 1 is circular, or square, or the pipe of prismatic, and soil cleaning port 25 is arranged on the valve body, and soil cleaning port and blind plate 26 are fixed together; There is gas exit the described lower end of advancing gas pipe 5; Gas exit connects the gas entry of mixed gas burner 8; Or gas exit and second pond 7 are connected; Have in second pond and place into that a side that goes out gas pipe 11, the second ponds 7 of gas pipe one side has the below that places overflow pipe to be acclivitous sidewall; The structure of described mixed gas burner 8 is; The rear portion periphery of first cylindrical shell 29 is set with to have between second cylindrical shell, 30, the first cylindrical shells and second cylindrical shell on 31, the second cylindrical shells of second circular passage has the gas pipeline 32 that is connected with second circular passage; Gas collection awl 33 is arranged on the rear end of second cylindrical shell; Gas collection awl be the conulite of the both ends open that front end is big, the rear end is little, and the diameter of gas collection awl front end is identical with the diameter of second cylindrical shell, and the diameter that gas collection is bored the rear end is greater than the diameter of first cylindrical shell diameter less than second cylindrical shell; The rear end of gas collection awl is a gas vent; Branch gas coning core 34, the first cylindrical shells being arranged in first cylindrical shell and divide between the gas coning core has first circular passage 35, and the center of the front end of branch gas coning core and the gas entry 36 of first barrel front end is corresponding; On the lower end of gas entry 36 and gas pipeline flange is arranged all, gas pipeline 32 links together with combustion fan 9; Described first cylindrical shell, 29 point diameters are less than the rear end diameter; Described minute gas coning core 34 partly connected as one by tapering part and stretched and constitutes, and the leading section of tapering part is plane, and the diameter of tapering part rear end is identical with the diameter of stretched part, and stretched partly is the cylinder of diameter less than first cylindrical shell; The structure of described steady flame slide materials device 10 is that the front end of stack shell 37 has refractory concrete protective layer 38, and inlet plenum 39 is arranged in the refractory concrete protective layer; Heat-resistant layer 40 in the ceramic fibre is arranged on the stack shell inwall; Be hot room 41 in the heat-resistant layer in the ceramic fibre, hot room and inlet plenum are connected, and the inlet plenum front end places on the gas vent of mixed gas burner; The size of the gas vent of the size of inlet plenum front end and mixed gas burner is complementary; Have in the rear portion of stack shell and slip material pipe 42, the periphery of material pipe of slipping is enclosed with the outer heat-resistant layer 43 of ceramic fibre, slips the lower end of material pipe in stack shell passes the front end that hot room places stack shell rear portion and dryer; Stack shell rear end and dryer link together; Described inlet plenum 39 is the big cover shape in the little rear end of front end, and there is the feeding mouth 45 that stretches out stack shell the upper end of described slide material pipe 42, and feeding mouth is the little infundibulate in big lower end, upper end; The shape of described refractory concrete protective layer 38, size and stack shell match should, reinforcement 44 is arranged on the front end of refractory concrete protective layer, reinforcement 44 has 3, on the front end face that is fixed on the refractory concrete protective layer triangular in shape.

The utility model in use; Gas generator wherein makes the coal imperfect combustion transform into the producer gas that main component is carbon monoxide, methane, hydrogen; Producer gas is delivered to the anterior mixed gas burner of steady flame slide materials device that docks with the dryer front portion with the low-pressure fluid conveyance conduit carries out second-time burning; Heat that the producer gas second-time burning produces and the coal heat that imperfect combustion produces in gas generator is directly sent into dryer together; High-temperature flue gas carries out sufficient heat exchange with wet stock in dryer; Reach the oven dry purpose; The stop valve that diffuses fast through between mixed gas burner and gas generator, installing additional is controlled the heat of break-make and the gas generator of producer gas and is equipped with, and can the water 1 kilogram of normal temperature and pressure under be converted into the heat of 100 degrees centigrade of water vapours needs 650 kilocalories; Because normal pressure heating gas station; Gas exit pressure is below 1000 handkerchiefs; So the sealing of this assembly can consider to make water to do the media implementation flexible sealing, the degree of depth of water-stop is about 20 centimeters degree of depth, diffuses stop valve fast and be the water gross weight that balances splendid attire in spool and the spool of steel with the counterweight tube through steel wire rope with by the fixed pulley group that two fixed pulleys constitute; Make that lifting the counterweight tube by manpower can mention and put down spool; Accomplish the quick control of coal gas break-make, spool put down simultaneously when the counterweight tube was mentioned, and cut off the supply of producer gas to the mixed gas burner; And no a small amount of producer gas mouthful entered chimney or directly enter atmosphere through diffusing; When the counterweight tube put down, spool was mentioned to seal and is diffused mouth, and the gas piping (advance gas pipe with go out gas pipe constitute gas piping) that leads to the mixed gas burner mouthful is opened; Producer gas can continue to mixed gas burner air feed along pipeline; Impurity such as the middle tar in first, second pond of falling water-stop that hot dirty gas carries, dust can be by directly clearing up away in the oral area in first, second pond and the soil cleaning port, and soil cleaning port is normally connected airtight by flange and blind plate, periodic cleaning as required; Run into and compelledly behind the branch gas coning core flow along first circular passage between first cylindrical shell that divides gas coning core and steel from the producer gas that gas pipe is delivered to the mixed gas burner of going out that diffuses stop valve fast, the air that comes out from combustion fan is through the gas pipeline of steel, and the second circular passage screw that gets into along the tangential direction of first cylindrical shell of steel between second cylindrical shell of first cylindrical shell and steel of steel is advanced, and air proceeds to the gas collection awl of steel and sentences the spiral status ejection; At the anterior negative pressuren zone that forms of mixed gas burner, by force and the producer gas mixing after-combustion of from the mixed gas burner, coming out, reach air, the well-mixed purpose of combustion gas with this, make producer gas be fully used; The producer gas self-ignition temperature is 650 degrees centigrade, if do not install the fixed combustion chamber device additional in the front portion of dryer, in the course of the work; Dryer is anterior because the appearance of water vapour and the reason of kiln tail air inducing can not guarantee that there is high-temperature region more than 650 degrees centigrade in the dryer front portion, and then producer gas is very easily because of reasons such as coal mechanically actuated or gas quality instabilities; Cause frequently stopping working under the duty, install steady flame slide materials device additional, form high-temperature region more than 800 degrees centigrade in the cylinder front portion of dryer; Prevent that coal gas is frequent down in working order flame-out, even if flame-out in short-term, also can be because of the existence self-ignition at once of high-temperature region; The traditional combustion chamber is many builds by laying bricks or stones with refractory brick, have that volume is big, quality heavy, heat insulation effect is not good, when heating up slow, shutdown during start cooling slow and civil engineering is many, difficulty of construction is big; And be difficult for and problems such as dryer (like whizzer) dock, steady flame slips the inside and outside heat-resistant layer of ceramic fibre of materials device and all can adopt standard HLGX-289 type aluminum silicate ceramic refractory fibre module masonry (also available mullite firebrick, mullite pouring material, refractory ceramic fibre pours, indefinite form high alumina refractory casting material, high-purity type ceramic fibre module, high alumina type ceramic fibre module, contain zirconium type ceramic fibre module replace), and surely flame slide materials device has overcome above-mentioned all problems; And gross weight is no more than 2.5 tons, can before equipment dispatches from the factory, accomplish assembling, only needs hoisted in position to on-the-spot back; Significantly reduced the engineering time, the stoving process of high moisture material adopts co-current mode usually; Just flame sprays into the cylinder of dryer from feed end, and tremie pipe is as slipping the necessary device of material so, and its refractoriness just goes through one's facings greatly; Tremie pipe has the material of employing to have now: stainless steel, heat resisting steel, earthenware, common A3 steel or the like, and wherein earthenware is not suitable for the operating mode of gas generator, and the work characteristics of producer gas is a quick heating, cooling is fast, as easy as rolling off a log causing of suddenly cold and hot bursts concerning pottery; Damage very soon, cost is too high again for stainless steel and heat resisting steel material, and scaling loss is still kept away unavoidably; Only can how with several days than common iron, impracticable, the slide material pipe of 12 millimeters thick A3 steel matter is exposed in the flame of producer gas; Only just can wholely burn fully in 20 days, service time is very short, though cost is low; But change difficulty, surely flame slide materials device is the ceramic fiber blanket parcel of the slide of A3 steel matter being expected effective ceramic fibre system, toasts with the bonding back of HLHG-20 high-temperature agglomerant that flue company in Jinan produces; Avoided the oxygen enrichment high-temperature flue gas directly to contact with the slide material pipe of steel, the outer heat-resistant layer (claiming integument again) of ceramic fibre plays adiabatic and muffle effect, expects that inner core temperature under the dual-cooled of cold air and band water wet stock of managing is difficult to bring up to more than 500 degrees centigrade and slip; The scaling loss of the slide materials device that this just reduces greatly, and then its life-span is improved more than 6 times, prolonged the conventional maintenance time interval of equipment.

Through using proof, the utility model efficiently solves that heating load is low, heating load is unstable, and the thermal efficiency is low, low production capacity of high energy consumption and the long problem of maintenance cycle, and its concrete condition is following:

1) improves drying plant efficiency of utilization to 70%;

2) improve drying plant mechanization level;

3) utilize gas generator that drying plant is realized even distribution heating;

4) utilizing gas generator to alleviate significantly dries the labor strength in the mechanical use and improves workman's operating environment;

5) stablize the mechanical dehydrating amount hourly of oven dry through stable heating;

6) adapt to the variation of institute's drying material water content through the adjustment heating load, can increase heat immediately to high moisture material and supply with, can in time reduce heat to the less raw material of humidity and supply with, make discharging moisture content uniformity;

7) lifting waits the mechanical dehydrating amount hourly of oven dry; And traditional coal-fired machinery is done the equipment of thermal source; Heating load is low, heating load is unstable, directly influences the performance of production capacity, uses cylinder dryer about about 1 ton of the dehydrating amount per hour of 2.0 rice diameters of local method heat supply; And through the dryer of 2.0 rice diameters of the utility model combination per hour dehydrating amount can reach 5 tons, the utility model improves 4 times of production capacities than traditional coal gas drying plant;

8) OnNow of realizing drying plant with stop, utilizing and diffuse stop valve fast and realized that production line changes the instantaneous switching that heat is equipped with state over to by duty, increased the convenience of operation, and made the realization of equipment overhaul fast;

9) strengthen the adaptability of oven dry machinery significantly to material; Can according to material per hour dehydrating amount adjust heating load immediately; Through adjusting the rotating speed of the electromagnetic varispeed motor of mating on the boiler induced-draft fan; In time targetedly kiln tail air inducing air quantity is carried out accommodation, avoid the excessive reduction heat of air inducing amount to imitate, the air inducing amount is too small can not effectively get rid of moisture;

10) realize the application of this cheap clear energy sources of producer gas in oven dry machinery through the mixed gas burner; The per hour mixed gas feeding amount of the utility model autonomous Design is greater than the mixed gas burner of 500 cubic metres super-flow; Per hour feed the coal gas amount and can reach 5000 cubic metres; But still can keep abundant mixed combustion; Realize the fully effectively mixed combustion between the coal gas and combustion air under the super-flow, burners such as conventional low thread thigh burner and sleeve burner, general coal gas feeding maximum stream flow is at abundant active combustion still below 250 cubic metres per hour; Per hour the problem that air and coal gas can not fully effectively mix can appear in the flow more than 250 cubic metres; Efficiency of combustion is low, and conventional burners use cast steel casting, and single burner performance is not good and weight is big, cost is high; Influenced this cheap thermal source of self-control coal gas in oven dry practical application mechanically, the mixed gas burner of the utility model design has thoroughly solved big flow burner air, the proportional mixed problem of combustion gas;

11) the steady flame slide materials device of autonomous Design guarantees that fully flame stabilization is difficult for extinguishing; The ceramic fibre that installs high temperature additional improve service life as overdoing under 950 degrees centigrade of slide material pipe range phases of the steel of protective sleeve 6-10 doubly more than, the slide material pipe of the thick common steel of 12mm only used 15 to 20 days.

The utility model input amount of heat is controlled, and thermal source is supplied with stable, and production status is stable; Gu the thermal efficiency reaches (pipeline that fuel remaining carbon+gas transmission is used and equipment heat waste) about 80%; The thermal efficiency is high, and the service life of having improved equipment, energy savings; Reduce cost, its effect is that existing coal gas drying plant is incomparable.

Claims (10)

1. furnace burning producer gas drying system; Comprise gas generator, burner and dryer, it is characterized in that the gas piping of gas generator (2) and the gas inlet of diffusing stop valve (4) fast are connected; The gas exit that diffuses stop valve fast connects the gas entry of mixed gas burner (8); The gas vent of mixed gas burner links to each other with the inlet plenum of steady flame slide materials device (10), the front end of the back termination dryer (12) of steady flame slide materials device, and the described stop valve (4) that diffuses fast comprises valve body, spool and fixed pulley group; First pond (3) is arranged at the bottom of valve body (1); What the bottom in first pond had that the upper end puts in valve body advances gas pipe (5), and there is spool (6) upper end of advancing gas pipe, and assembly pulley support (18) is arranged on the valve body; Fixed pulley group (19) on the assembly pulley support links to each other with spool (6) through steel wire rope (20), on steel wire rope (20) other end counterweight tube (21) is arranged.

2. furnace burning producer gas drying system according to claim 1; It is characterized in that; Described dryer (12) is whizzer or rotary drying machine; Boiler induced-draft fan (13) is arranged on the rearward end of dryer (12), and boiler induced-draft fan is connected with electromagnetic varispeed motor (14), and there is conveyer belt (15) the discharging opening below of dryer.

3. furnace burning producer gas drying system according to claim 1 is characterized in that, described structure of diffusing stop valve (4) fast is; The bottom of valve body (1) is fixed on first pond (3), and the side wall upper part of first pond (3) has first upper hose (27) and overflow pipe (28) respectively, and what the bottom in first pond had that the upper end puts in valve body advances gas pipe (5); There is spool (6) upper end of advancing gas pipe, and the gas inlet (16) that links to each other with gas generator is arranged on the valve body, and vertical tube (17) is arranged at the top of valve body; Assembly pulley support (18) is arranged on the valve body of vertical tube one side, and fixed pulley group (19) is arranged at the top of assembly pulley support, and an end of the steel wire rope on the fixed pulley group links to each other with pull bar (22); The other end has counterweight tube (21); Pull bar puts in valve body through vertical tube and is connected with spool, and fixed pulley group (19) is to be made up of two fixed pulleys, and described vertical tube (17) is the top sealing; The tubulose of lower openings; The diameter of vertical tube diffuses mouthful (23) less than the width of spool on one sidewall of vertical tube, second upper hose (24) is arranged on the valve body.

4. furnace burning producer gas drying system according to claim 3 is characterized in that, the structure of described spool (6) is; Last cylinder is fixed on the top of low groove, and the center of last cylinder has and the shape of vertical tube, the upper groove that size is complementary, and upper groove places the below of second upper hose; Low groove is sleeved on on the gas pipe; The diameter of spool is greater than the diameter that enters gas pipe (5), and last cylinder is real stem stem body or hollow cylinder, water is housed in hollow.

5. furnace burning producer gas drying system according to claim 3 is characterized in that, described valve body (1) is circular, or square, or the pipe of prismatic, and soil cleaning port (25) is arranged on the valve body, and soil cleaning port and blind plate (26) are fixed together.

6. furnace burning producer gas drying system according to claim 3; It is characterized in that; There is gas exit the described lower end of advancing gas pipe (5), and gas exit connects the gas entry of mixed gas burner (8), or gas exit and second pond (7) are connected; Have in second pond place gas pipe one side into go out gas pipe (11), a side of second pond (7) has the below that places overflow pipe to be acclivitous sidewall.

7. furnace burning producer gas drying system according to claim 1; It is characterized in that the structure of described mixed gas burner (8) is that the rear portion periphery of first cylindrical shell (29) is set with second cylindrical shell (30); Second circular passage (31) is arranged between first cylindrical shell and second cylindrical shell; The gas pipeline (32) that is connected with second circular passage is arranged on second cylindrical shell, gas collection awl (33) is arranged on the rear end of second cylindrical shell, the gas collection awl is the conulite of the both ends open that front end is big, the rear end is little; The diameter of gas collection awl front end is identical with the diameter of second cylindrical shell; The diameter of gas collection awl rear end is greater than the diameter of first cylindrical shell diameter less than second cylindrical shell, and the rear end of gas collection awl is a gas vent, and branch gas coning core (34) is arranged in first cylindrical shell; Between first cylindrical shell and the branch gas coning core first circular passage (35) is arranged; The center of the front end of branch gas coning core and the gas entry (36) of first barrel front end is corresponding, on the lower end of gas entry (36) and gas pipeline flange is arranged all, and gas pipeline (32) and combustion fan (9) link together.

8. furnace burning producer gas drying system according to claim 7; It is characterized in that; Described minute the gas coning core (34) partly connect as one by tapering part and stretched and constitute; The leading section of tapering part is plane, and the diameter of tapering part rear end is identical with the diameter of stretched part, and stretched partly is the cylinder of diameter less than first cylindrical shell.

9. furnace burning producer gas drying system according to claim 1 is characterized in that, the structure of described steady flame slide materials device (10) is; The front end of stack shell (37) has refractory concrete protective layer (38); Inlet plenum (39) being arranged in the refractory concrete protective layer, heat-resistant layer (40) in the ceramic fibre is arranged on the stack shell inwall, is hot room (41) in the heat-resistant layer in the ceramic fibre; Hot room and inlet plenum are connected; The inlet plenum front end places on the gas vent of mixed gas burner, and the size of the gas vent of the size of inlet plenum front end and mixed gas burner is complementary, and the material of slide pipe (42) is arranged in the rear portion of stack shell; The periphery that the material that slips is managed is enclosed with the outer heat-resistant layer (43) of ceramic fibre; Slip the lower end of material pipe in stack shell passes the front end that hot room places stack shell rear portion and dryer, and stack shell rear end and dryer link together, and described inlet plenum (39) is the big cover shape in the little rear end of front end; There is the feeding mouth (45) that stretches out stack shell the upper end of described slide material pipe (42), and feeding mouth is the little infundibulate in big lower end, upper end.

10. furnace burning producer gas drying system according to claim 9; It is characterized in that; Shape, size and the stack shell of described refractory concrete protective layer (38) matches should; Reinforcement (44) is arranged on the front end of refractory concrete protective layer, and reinforcement (44) has 3, on the front end face that is fixed on the refractory concrete protective layer triangular in shape.

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