CN102297580B

CN102297580B - Coal gas drying system of combustion generator furnace

Info

Publication number: CN102297580B
Application number: CN2011101940059A
Authority: CN
Inventors: 武振华
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-07-12
Filing date: 2011-07-12
Publication date: 2013-05-08
Anticipated expiration: 2031-07-12
Also published as: CN102297580A

Abstract

The invention relates to a coal gas drying system of a combustion generator furnace, solving problems of low heat supply, instability, low heat efficiency, high energy consumption, low production energy and long maintenance cycle effectively. Structurally, a coal gas pipeline of a coal gas generator surface is communicated with a coal gas inlet of a rapid diffusion stop valve; a coal gas outlet of the rapid diffusion stop valve is connected with a coal gas inlet of a mixed coal gas combustor; a gas outlet of the mixed coal gas combustor is connected with an air inlet chamber of a flame stabilizing material sliding device; and the rear end of the flame stabilizing material sliding device is connected with the front end of the drying machine. The drying system provided by the invention has high heat utilization efficiency, uniform heat supply, uniform and consistent discharge moisture content and long service life, is convenient to overhaul, and air and fuel gas for the combustor is mixed in proportion.

Description

A kind of coal gas drying system of combustion generator furnace

Technical field

The present invention relates to drying plant, particularly a kind of coal gas drying system of combustion generator furnace.

Background technology

Flourish along with in recent years of coal slime oven dry industry, for providing good development, the energy development strategy of country supports, stacking, the pollution problem of coal washing industry coal slime have been solved, and exchanged the regeneration of a large amount of waste resources for less cost, coal slime drying plant industry is also flourish in recent years, dog-eat-dog, but the problem that exists on structure, equipment performance is uneven, and configuration varianceization is large.In the coal slime drying plant, normal the use is coal slime, and coal slime is 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 combustible, when water content is low, running into continuous high temperature (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 larger viscosity, viscous is at the dryer barrel, not only clear up difficulty very big, and make the thermal efficiency of drying plant greatly reduce, cause high energy consumption to hang down production capacity.the water content of coal slime raw material is not single stable, it is short that the pilling up time of coal slime has length to have, winter, summer is difference to some extent, especially the north is more obvious, the coal slime of same batch even upper and lower coal slime water content is all variant, the principle of coal slime drying plant is, moisture heat absorption in raw material becomes steam and could be peeled off by the induced draught system extraction, the heat that the water of per kilogram is converted into the required absorption of steam is certain, how much moisture content baking falls, must input corresponding heat, so the thermal efficiency of drying system is also one of important indicator that determines the drying plant production capacity, use traditional coal-fired machinery to do the equipment of thermal source, heating load is low, heating load is unstable, directly affect the performance of production capacity, often the thermal efficiency is not as good as 30%, drying plant is a comparatively complicated system, to be combined by many electromechanics and plant equipment, the situation of maintenance may appear shutting down at any time.Use the equipment of the 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 and safeguard shortly three or five days, long ten days first quarter moons are therefore improvement and bring new ideas is imperative.

Summary of the invention

For above-mentioned situation, for overcoming the prior art defective, the present invention's purpose just is to provide a kind of coal gas drying system of combustion generator furnace, can effectively solve heating load low, unstable, and the thermal efficiency is low, high energy consumption, low production capacity and the long problem of maintenance cycle.

the technical scheme that the present invention solves is to comprise gas generator, burner and dryer, the gas piping of gas generator and the gas inlet of Quick-bleeding stop valve are connected, the gas exit of Quick-bleeding stop valve connects the gas entry of mixed gas burner, the gas vent of mixed gas burner and steady flame slip the inlet plenum of materials device and are connected, steady flame slips the front end of rear termination dryer of materials device, described Quick-bleeding stop valve comprises valve body, spool and fixed pulley group, the first pond is arranged at the bottom of valve body, the bottom in the 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 valve body, fixed pulley group on the assembly pulley support is connected with spool through steel wire rope, the counterweight cylinder is arranged on the steel wire rope other end.

Efficiency of utilization of the present invention 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 structure top view of the present invention.

Fig. 2 is structural front view of the present invention.

Fig. 3 is the structural front view of Quick-bleeding stop valve of the present invention.

Fig. 4 is the structure right side view of Quick-bleeding stop valve of the present invention.

Fig. 5 is that the A-A of Fig. 3 of the present invention is to structure cutaway view (quitting work).

The use working state schematic representation of Quick-bleeding stop valve when Fig. 6 is gas generator normal operation of the present invention.

Fig. 7 is the structural front view of mixed gas burner of the present invention.

Fig. 8 is that the B-B of Fig. 7 of the present invention is to structural front view.

Fig. 9 is that the steady flame of the present invention slips the structure cutaway view of materials device.

Figure 10 is that the steady flame of the present invention slips the structure right view of materials device.

The specific embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.

provided by Fig. 1-Figure 10, the present invention includes gas generator, burner and dryer, the gas inlet of the gas piping of gas generator 2 and Quick-bleeding stop valve 4 is connected, the gas exit of Quick-bleeding stop valve connects the gas entry of mixed gas burner 8, the gas vent of mixed gas burner and steady flame slip the inlet plenum of materials device 10 and are connected, steady flame slips the front end of rear termination dryer 12 of materials device, described Quick-bleeding stop valve 4 comprises valve body, spool and fixed pulley group, the first pond 3 is arranged at the bottom of valve body 1, what the bottom in the 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, assembly pulley support 18 is arranged on valve body, fixed pulley group 19 on the assembly pulley support is connected with spool 6 through steel wire rope 20, on steel wire rope 20 other ends, counterweight cylinder 21 is arranged.

described dryer 12 is mine equipment, as 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 conveyer belt 15 is arranged below the discharging opening of dryer, the structure of described Quick-bleeding stop valve 4 is, the bottom of valve body 1 is fixed on the first pond 3, the side wall upper part in the first pond 3 has respectively the first upper hose 27 and overflow pipe 28, what the bottom in the 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, the gas inlet 16 that is connected with gas generator is arranged on 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, 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 is connected with pull bar 22, the other end has counterweight cylinder 21, pull bar puts in valve body through vertical tube and is connected with spool, fixed pulley group 19 is to be made of two fixed pulleys, described vertical tube 17 is closed upper part, the tubulose of lower openings, the diameter of vertical tube is less than the width of spool, on one sidewall of vertical tube, diffusion mouth 23 is arranged, diffusion mouth connects chimney, the second upper hose 24 is arranged on valve body, the structure of described spool 6 is, upper cylinder is fixed on the top of low groove, the center of upper cylinder has and the shape of vertical tube, the upper groove that size is complementary, low groove is sleeved on gas pipe, the diameter of spool is greater than the diameter that advances gas pipe 5, upper cylinder is real stem stem body or hollow column, and 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 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 the second pond 7 are connected, there is a side that goes out gas pipe 11, the second ponds 7 that is placed in into gas pipe one side to have the below that is placed in overflow pipe to be acclivitous sidewall in the second pond, the structure of described mixed gas burner 8 is, the rear portion periphery of the first cylindrical shell 29 is set with the second cylindrical shell 30, the second circular passage 31 is arranged between the first cylindrical shell and the second cylindrical shell, the gas pipeline 32 that is connected with the second circular passage is arranged on the second cylindrical shell, gas collection cone 33 is arranged on the rear end of the second cylindrical shell, the gas collection cone is large for front end, the hollow cone of the both ends open that the rear end is little, the diameter of gas collection cone front end is identical with the diameter of the second cylindrical shell, the diameter of gas collection cone rear end is greater than the diameter of the first cylindrical shell diameter less than the second cylindrical shell, the rear end of gas collection cone is gas vent, a minute gas coning core 34 is arranged in the first cylindrical shell, between the first cylindrical shell and minute gas coning core, the first circular passage 35 is arranged, the center of the front end of minute gas coning core and the gas entry 36 of the first barrel front end is corresponding, flange is all arranged on the lower end of gas entry 36 and gas pipeline, gas pipeline 32 and combustion fan 9 link together, described the 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 consists of, 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 is partly that diameter is less than the cylinder of the first cylindrical shell, described steady flame slips the structure of materials device 10 and is, the protective layer 38 that the useful refractory concrete of the front end of stack shell 37 is made, inlet plenum 39 is arranged in protective layer, the interior heat-resistant layer 40 that on the stack shell inwall, useful ceramic fibre is made, be hot room 41 in interior heat-resistant layer, hot room and inlet plenum are connected, the inlet plenum front end is placed 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, feeding tube 42 is arranged in the rear portion of stack shell, the periphery of feeding tube is enclosed with the outer heat-resistant layer 43 made from ceramic fibre, the lower end of feeding tube is in stack shell passes the front end that hot room is placed in stack shell rear portion and dryer, stack shell rear end and dryer link together, described inlet plenum 39 is large hood-like in front end little rear end, there is the feeding mouth 45 that stretches out stack shell the upper end of described feeding tube 42, feeding mouth is small top and big bottom infundibulate, the shape of described protective layer 38, size and stack shell match, and reinforcement 44 is arranged on the front end of protective layer, and reinforcement 44 has 3, on the front end face that is fixed on protective layer triangular in shape, described ceramic fibre also can select mullite firebrick, mullite pouring material, High-Alumina castable refractory to replace.

the present invention in use, it is carbon monoxide that gas generator wherein makes the coal imperfect combustion transform into main component, methane, the producer gas of hydrogen, producer gas is delivered to the low-pressure fluid conveyance conduit slips the mixed gas burner of materials device front portion with the anterior steady flame that docks of dryer and carry out second-time burning, the 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, control the hot standby of the break-make of producer gas and gas generator by the Quick-bleeding stop valve that installs additional between mixed gas burner and gas generator, water under 1 kilogram of normal temperature and pressure can be converted into 100 degrees centigrade of water vapours needs the heat of 650 kilocalories, due to 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, Quick-bleeding stop valve is by steel wire rope with balanced the water gross weight of splendid attire in the spool of steel and spool by the fixed pulley group that two fixed pulleys consist of with the counterweight cylinder, make and lift the counterweight cylinder by manpower and can mention and put down spool, complete the quick control of coal gas break-make, when the counterweight cylinder is mentioned, spool puts down simultaneously, cut off producer gas to the supply of mixed gas burner, and no a small amount of producer gas is entered chimney or directly enters atmosphere by diffusion mouth, when the counterweight cylinder puts down, spool is mentioned and is sealed diffusion mouth, gas piping (advance gas pipe and go out gas pipe and the consist of gas piping) mouth that leads to the mixed gas burner is opened, producer gas can continue to mixed gas burner air feed along pipeline, hot dirty gas carries falls first of water-stop, the middle tar in the second pond, the impurity such as dust can be by first, directly clear up away in the oral area in the second pond and soil cleaning port, soil cleaning port normally connects airtight by flange and blind plate, periodic cleaning as required, be forced to along the first annular channel flow between the first cylindrical shell of minute gas coning core and steel after producer gas that gas pipe is delivered to the mixed gas burner runs into minute gas coning core from going out of Quick-bleeding stop valve, from the gas pipeline of combustion fan air out through steel, the the second circular passage screw that enters along the tangential direction of the first cylindrical shell of steel between the second cylindrical shell of the first cylindrical shell of steel and steel is advanced, air proceeds to the gas collection cone of steel and sentences the spiral status ejection, at the anterior negative pressuren zone that forms of mixed gas burner, out producer gas mixing after-combustion by force and from the mixed gas burner, reach air with this, the well-mixed purpose of combustion gas, make producer gas be fully used, the producer gas self-ignition temperature is 650 degrees centigrade, if the front portion at dryer does not install the fixed combustion chamber device additional, in the course of the work, dryer is anterior because the appearance of water vapour and the reason of kiln tail air inducing, the anterior existence of impossible assurance dryer high-temperature region more than 650 degrees centigrade, producer gas is very easily because of coal mechanically actuated or the reason such as gas quality is unstable, cause under duty frequently flame-out, install steady flame additional and slip materials device, form high-temperature region more than 800 degrees centigrade the cylinder of dryer is anterior, prevent that coal gas is lower frequent flame-out in working order, even if flame-out in short-term, also can be because of the existence self-ignition at once of high-temperature region, the multiplex laying fireproof bricks in traditional combustion chamber, exist volume large, quality is heavy, heat insulation effect is not good, heat up during start slow, during shutdown, cooling is slow, and civil engineering is many, difficulty of construction is large, and be difficult for and the problems such as dryer (as whizzer) docks, steady flame slip materials device in, outer heat-resistant layer all can adopt standard HLGX-289 type aluminum silicate ceramic fire-proof fiber module to build (also available mullite firebrick by laying bricks or stones, mullite pouring material, the refractory ceramic fibre castable, indefinite form High-Alumina castable refractory, high-purity type ceramic fiber module, high alumina type ceramic fiber module, containing zirconium type ceramic fiber module replaces), steady flame slips materials device and has overcome above-mentioned all problems, and gross weight is no more than 2.5 tons, can before dispatching from the factory, complete equipment assembling, only need hoisted in position after on-the-spot, greatly reduced the engineering time, the stoving process of high moisture material, usually adopt co-current mode, namely flame sprays into the cylinder of dryer from feed end, tremie pipe is as slipping the necessary device of expecting so, 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 etc., wherein earthenware is not suitable for the operating mode of gas generator, the work characteristics of producer gas is quick heating, cooling is fast, as easy as rolling off a log causing of suddenly cold and hot bursts concerning pottery, damage very fast, stainless steel, with heat resisting steel material high cost again, and scaling loss is still kept away unavoidably, only can multiplex several days than common iron, impracticable, the feeding tube 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, it is with the feeding tube of the A3 steel matter ceramic fiber blanket parcel with ceramic fibre system that steady flame slips materials device, the bonding rear baking of HLHG-20 high-temperature agglomerant with the production of Jinan flue company, avoided the oxygen enrichment high-temperature flue gas directly to contact with the feeding tube of steel, the outer heat-resistant layer of ceramic fibre system (claiming again integument) plays adiabatic and muffle effect, and the inner core of feeding tube cold air and with the dual-cooled of water wet stock under temperature be difficult to bring up to more than 500 degrees centigrade, this just reduces greatly slips the scaling loss of materials device, and then make its life-span improve more than 6 times, extended the conventional maintenance time interval of equipment.

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

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

2) improve the drying plant Mechanization Level;

3) utilize gas generator to realize even distribution heating to drying plant;

4) utilize gas generator significantly alleviate the labor strength in the mechanical use procedure of oven dry and improve workman's operating environment;

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

6) adapt to the variation of institute's drying material water content by adjusting heating load, can immediately increase heat for high moisture material and supply with, can in time reduce heat for 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 affect the performance of production capacity, use roller drying machine about 1 ton of left and right of 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 present invention combination per hour dehydrating amount can reach 5 tons, the present invention improves 4 times of production capacities than traditional coal gas drying plant;

8) realize the OnNow of drying plant and stopping, utilizing the Quick-bleeding stop valve to have realized that production line is changed over to the instantaneous switching of hot standby state by duty, increased the convenience of operation, and made the Quick overhaul of realizing of equipment;

9) significantly strengthen oven dry machinery to the adaptability of material, can according to material per hour dehydrating amount immediately adjust heating load, by adjusting the rotating speed of the electromagnetic varispeed motor of mating on boiler induced-draft fan, in time targetedly kiln tail air inducing air quantity is carried out accommodation, avoid the excessive reduction thermal effect of air inducing amount, 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 by the mixed gas burner, the per hour mixed gas intake of autonomous Design of the present invention is greater than the mixed gas burner of the super-flow of 500 cubic metres, per hour pass into the coal gas amount and can reach 5000 cubic metres, but still can keep abundant mixed combustion, realize the fully effectively mixed combustion between coal gas and combustion air under super-flow, the burners such as conventional low trickle burner nozzle and sleeve burner, general coal gas passes into maximum stream flow 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 is used the cast steel casting moulding, single burner performance is not good and weight is large, cost is high, affected this cheap thermal source of self-made gas in oven dry practical application mechanically, the mixed gas burner of the present invention's design has thoroughly solved large flow burner air, the proportional mixed problem of combustion gas,

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

It is controlled that the present invention inputs amount of heat, and thermal source is supplied with stable, and production status is stable, Gu the thermal efficiency reaches 80% left and right (pipeline that fuel remaining carbon+gas transmission is used and equipment heat waste), the thermal efficiency is high, and has improved the service life of equipment, and energy savings reduces costs.

Claims

1. the drying system of coal gas in the producer that burns, comprise gas generator, burner and dryer, it is characterized in that, the gas inlet of the gas piping of gas generator (2) and Quick-bleeding stop valve (4) is connected, the gas exit of Quick-bleeding stop valve connects the gas entry of mixed gas burner (8), the gas vent of mixed gas burner and steady flame slip the inlet plenum of materials device (10) and are connected, steady flame slips the front end of rear termination dryer (12) of materials device, described Quick-bleeding stop valve (4) comprises valve body, spool and fixed pulley group, the first pond (3) is arranged at the bottom of valve body (1), what the bottom in the 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, assembly pulley support (18) is arranged on valve body, fixed pulley group (19) on the assembly pulley support is connected with spool (6) through steel wire rope (20), on steel wire rope (20) other end, counterweight cylinder (21) is arranged.

2. the drying system of coal gas in burning producer 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), boiler induced-draft fan is connected with electromagnetic varispeed motor (14), and conveyer belt (15) is arranged below the discharging opening of dryer.

3. the drying system of coal gas in burning producer according to claim 1, it is characterized in that, the structure of described Quick-bleeding stop valve (4) is, the bottom of valve body (1) is fixed on the first pond (3), the side wall upper part in the first pond (3) has respectively the first upper hose (27) and overflow pipe (28), what the bottom in the 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, the gas inlet (16) that is connected with gas generator is arranged on valve body, 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, 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 is connected with pull bar (22), the other end has counterweight cylinder (21), pull bar puts in valve body through vertical tube and is connected with spool, fixed pulley group (19) is to be made of two fixed pulleys, described vertical tube (17) is closed upper part, the tubulose of lower openings, the diameter of vertical tube is less than the width of spool, diffusion mouth (23) is arranged on one sidewall of vertical tube, the second upper hose (24) is arranged on valve body.

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

5. the drying system of coal gas in burning producer 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 valve body, and soil cleaning port and blind plate (26) are fixed together.

6. the drying system of coal gas in burning producer according to claim 3, it is characterized in that, 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 the second pond (7) are connected, have in the second pond be placed in into gas pipe one side go out gas pipe (11), a side of the second pond (7) has the below that is placed in overflow pipe to be acclivitous sidewall.

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

8. the drying system of coal gas in burning producer according to claim 7, it is characterized in that, described minute the gas coning core (34) partly connected as one by tapering part and stretched and consist of, the leading section of tapering part is plane, the diameter of tapering part rear end is identical with the diameter of stretched part, and stretched is partly that diameter is less than the cylinder of the first cylindrical shell.

9. the drying system of coal gas in burning producer according to claim 1, it is characterized in that, described steady flame slips the structure of materials device (10) and is, the protective layer (38) that the useful refractory concrete of front end of stack shell (37) is made, inlet plenum (39) is arranged in protective layer, the interior heat-resistant layer (40) that on the stack shell inwall, useful ceramic fibre is made, be hot room (41) in interior heat-resistant layer, hot room and inlet plenum are connected, the inlet plenum front end is placed 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, feeding tube (42) is arranged in the rear portion of stack shell, the periphery of feeding tube is enclosed with the outer heat-resistant layer (43) made from ceramic fibre, the lower end of feeding tube is in stack shell passes the front end that hot room is placed in stack shell rear portion and dryer, stack shell rear end and dryer link together, described inlet plenum (39) is large hood-like in front end little rear end, there is the feeding mouth (45) that stretches out stack shell the upper end of described feeding tube (42), feeding mouth is small top and big bottom infundibulate.

10. the drying system of coal gas in burning producer according to claim 9; it is characterized in that; shape, size and the stack shell of described protective layer (38) match; reinforcement (44) is arranged on the front end of protective layer; reinforcement (44) has 3, on the front end face that is fixed on protective layer triangular in shape.