CN1216248C - Boiler with preprocess function of automatic burning coke oven crude gas - Google Patents

Abstract

The present invention relates to a fully automatic burning coke oven crude gas boiler with pretreatment functions, which comprises a boiler body 1, a crude gas heater 14, crude gas filters 21, 35, a burner 57, a crude gas delivery main pipe 19, a half crude gas delivery main pipe 41, a testing releasing branch pipe 45, an ignition gas branch pipe 61 and a valve set, wherein the crude gas delivery main pipe is connected to the lower part of the crude gas heater. The crude gas delivery main pipe is connected with the half crude gas delivery main pipe after connected with the two crude gas filters, and the half crude gas delivery main pipe is connected with the burner. The burner is connected with a boiler liner 3 of the boiler body, the testing releasing branch pipe 45 and the ignition gas branch pipe 61 are orderly connected with the half crude gas delivery main pipe, and the ignition gas branch pipe is connected to an ignition gun of the burner. The boiler has the pretreatment functions of heating and filtering coke oven crude gas, etc., and the coke oven crude gas can achieve ideal burning effects and displays optimum chemical potential. The present invention opens up wide prospect for the full utilization of the coke oven crude gas, and solves the problem that the coke oven crude gas can not be burnt directly.

Description

Boiler with full-automatic burning coke oven crude gas of preprocessing function

Technical field:

The present invention relates to a kind of gas fired-boiler of Automatic Control.Main burning by coke-oven plant's coke oven produce when high temperature (900～1100 ℃) coking without pretreated raw gas.Make this raw gas directly carry out smooth combustion by this steam generator system.

Background technology:

The coke-oven plant whenever is smelt one ton of coke in coking is produced, will consume 1.2～1.3 tons of coals, produces about 300～350Nm ³Coal gas, these coal gas coking are melted down and are spent 50% approximately, remainder then by diffuse torch enter atmosphere (coal gas through extraction chemical products and purify after be sent to the city except).With the coke-oven plant that produces 300000 tons of coke per year is example, consumes 390,000 tons in coal every year approximately, produces about 11,700 ten thousand Nm ³Coal gas, coking melt down and spend 5,850 ten thousand Nm approximately ³, remain 5,850 ten thousand Nm ³Coal gas will enter atmosphere (adopting a lot of families in the whole nation, coke-oven plant of this kind production technology), if by 0.4 yuan/Nm ³Coal gas calculates, and will directly waste 2,340 ten thousand yuan (national statistics will be sizable numeral) every year, and cause the atmosphere severe contamination, because materials such as the hydrogen sulfide in the coke oven crude gas, hydrogen cyanide, benzene, naphthalene, tar are very poisonous.And the coke-oven plant must use heating agent (steam, hot water), refrigerant (water at low temperature) aborning, the producing and need a large amount of other energy (as coal, oil, electricity etc.) of heat, refrigerant.

Why can not so many raw gas be utilized and bleed off and contaminated environment certainly in vain?

Not too high (the about 17.752MJ/NM of the raw gas calorific value that coking by coke oven produced ³), gas temperature low again (about 15～25 ℃), its chemical composition is extremely complicated, and physical composition has water, benzene class, ammonia, hydrogen sulfide, sticky matter tar, crystalline solid naphthalene etc. again, can cause the action of boiler combustion valve group and control element to be lost efficacy.So without the raw gas of purified treatment, conventional boiler not only can't be normally, stably use, more can't realize the boiler Automatic Control, the result not only makes the coke oven crude gas can not completing combustion and utilization, and influences enterprise's ordinary production.And it is excessive to purify the coke oven crude gas investment, and income is very little, so that has caused coke oven crude gas to enter the pernicious situation of atmosphere in a large number.

At present, used combustion gas is through purifying or half purified treatment basically in the conventional gas fired-boiler, so, there is not the combustion gas heating problems, if in cold district or cold season, as long as simply to fuel gas companion heat.And without the coke oven crude gas of purified treatment and heating can't be normally, stably on conventional boiler, use.

At present, the filter that is used for boiler combustion gas filtration mainly contains plant filer element type and metal screen formula, but these two kinds all can not be satisfied the requirements that coke oven crude gas is filtered.Very fast by obstructions such as sticky matter tar, crystalline solid naphthalenes when filtering coke oven crude gas, if will clear up filter core or filter screen, the end cap set bolt of then must dismantling is pulled down end cap, could take out filter core or filter screen, and generally only just needs in 3～4 hours to change once.Very tired the lock, and influence the ordinary production of unit.Simultaneously, the noxious material in the coke oven crude gas has injury to human body.So the filter on original boiler can not adapt to coke oven crude gas to be used.

The stop valve of institute's adapted has multiplely on the conventional gas fired-boiler pipeline, is used for directly and burner is complementary and will realize that the fuel gas shutoff valve of controlling automatically is mainly the electromagnetic type stop valve.But for coke oven crude gas, electromagnetic shut-off valve just can not adapt to, and tracing it to its cause is that the structure and the kind of drive by this valve determined.The unlatching of electromagnetic shut-off valve picks up magnet drive valve rod by electromagnetic force and spool is lifted off a seat the composition surface and realized that closing is to reply by spring force.The main activities part spool of this valve, valve rod, spring, seal valve seat all are common ferrous material, this valve is in running, and above-mentioned parts all contacts with coke oven crude gas, owing in the coke oven crude gas a large amount of corrosive mediums is arranged, so these parts all are unable to undergo corrosion; Secondly, because sticky matter tar and crystalline solid naphthalene in the coke oven crude gas adhere on the movable members, make the regular event of part be obstructed, in this case, the electromagnetic force that just seems deficiency, sealing can not guarantee to the coke oven crude gas of low-pressure, influences magnetic valve and normally uses; In addition, the spool of this valve and valve seat are rigidity and contact sealing, if be stained with dirt on spool or the valve seat, just cause seal failure, make gas leak; Moreover this valve body bottom nothing is established blowdown apparatus, can not adapt to coke oven crude gas and use.

In addition, owing to still contain a certain amount of impurity, sticky matter and spray through coke oven half raw gas after filtering, make that original gas fired-boiler is difficult to adapt to, especially when boiler is wanted underrun, can't adjust especially, so will cause boiler operatiopn unstable and flame-out.

Summary of the invention:

Main purpose of the present invention is to provide a kind of boiler that can make the coke oven crude gas normal combustion and have good full-automatic regulation function.

It is a kind of specially at the heater of coke oven crude gas that first secondary objective of the present invention is to provide, make through the coke oven crude gas of heater heating can be normally, stably use.

Second secondary objective of the present invention is to provide a kind of coke oven crude gas filter that filter screen just can be cleared up filter screen that need not take out.

Syllabus for the third time of the present invention be to provide a kind of pneumatic cut-off valve that is specially adapted for coke oven crude gas, with the switching strength, breakdown action and the sealing reliability that improve valve and in time sediment or raffinate in the dump valve.

The 4th secondary objective of the present invention is to provide a kind of coke oven half raw gas burner that makes half raw gas normal combustion.

Main purpose of the present invention is achieved in that a kind of full-automatic burning coke oven crude gas boiler with preprocessing function, it comprises boiler body, the raw gas heater, the raw gas filter, burner, the raw gas gas transmission main, half raw gas gas transmission main, arm is diffused in test, the igniting branch gas tube, valve group and control system, raw gas heater top connects the raw gas entrance sleeve, the raw gas gas transmission main is inserted in the bottom, be connected in parallel on the raw gas gas transmission main and insert half raw gas gas transmission main behind the two raw gas filters, half raw gas gas transmission main inserts burner by main coal gas safety valve and main coal gas stop valve, burner links to each other with the front smoke box of boiler body, front smoke box links to each other with flue, half raw gas gas transmission main is gone forward, after pick out the test diffuse arm and the igniting branch gas tube, test is diffused and is connected the test burner on the arm and diffuse valve, and the igniting branch gas tube inserts the burner burning torch by igniting gas relief valve and igniting gas stop valve.

This boiler has preprocessing functions such as coke oven crude gas heating, filtration, is applicable to this boiler fully through pretreated coke oven half raw gas.Like this, with regard to making coke oven crude gas reach the ideal burning effect, given play to optimum chemical potential by this boiler.This boiler adopts horizontal three return structures, compact conformation, and good looking appearance can be realized Automatic Control.The utility model is that making full use of of coke oven crude gas opened up bright prospects, has solved coke oven crude gas and can not realize an Automatic Control and a difficult problem that directly uses.

First secondary objective of the present invention is achieved in that a kind of gas heater that is applicable to coke oven crude gas, it comprises cylindrical shell, on, low head, tube sheet, the pipe group, gas entry is taken over, gas exit is taken over, steam inlet is taken over, condensation-water drain is taken over, sewage draining exit is taken over and temperature controller, temperature sensor, magnetic valve and stop valve, on the tube sheet, following separation is arranged in the cylindrical shell, pipe group two ends are connected on the tube sheet, gas entry is taken over and the gas exit adapter is connected to respectively, low head top and bottom, steam inlet is taken over and the condensate water discharge connection is connected in cylinder lateral wall, steam inlet is taken over and is gone up series electrical magnet valve and stop valve, gas exit is provided with temperature sensor on taking over, temperature sensor links to each other with temperature controller, the executive component of temperature controller links to each other with magnetic valve, and sewage draining exit is taken over and is connected in the low head bottom.

The invention provides a kind of special heater at coke oven crude gas.(the gas temperature setting value is 68～80 ℃ to this heater used vapour indirect coke oven crude gas to a certain design temperature, this value can be adjusted according to raw gas component, calorific value and supply pressure are different), this temperature is controlled in the setting range automatically by temperature controller.Under this temperature, droplets such as the moisture in the coke oven crude gas, benzene class, ammonia are vaporized substantially and are formed the fine mist thing, tar drips and can be vaporizated into tar gas, naphthalene then distils, be unlikely crystallization, other composition is also with the temperature corresponding volatilization that raises, various combustible particles raise to decompose with temperature and diminish, like this when raw gas thereafter enters burner and mixes with air, will increase the diffusion velocity of oxygen, strengthen the diffusion process of oxygen, because diffusion velocity and the particle diameter of oxygen to the combustible particles surface is inversely proportional to the combustible particles surface; Secondly, along with diminishing of combustible particles, in the final combustion process of raw gas, combustion powered district can be spread to higher temperature range, promptly just enter the diffusion combustion district in higher temperature, like this, the thermal conductivity factor of raw gas raises with temperature and increases, density then reduces relatively, thereby strengthened combustion process, shortened raw gas and be preheating to the required time of ignition temperature, increased the chemical reaction velocity in the combustion zone, improve ignition temperature and flame propagation velocity, guaranteed the condition of coke oven crude gas overheavy firing.Assurance combustion system valve group and control element action were not lost efficacy.

In addition, design has sewage draining exit in the gas heater bottom, can discharge dirt, impurity and raffinate.

Second secondary objective of the present invention is achieved in that a kind of coke oven crude gas filter, it comprises housing, coal gas import and export, arc filter screen, steam blowing pipe and jacket type steam heater, the coal gas import and export is arranged at the housing both sides respectively, filter screen vertically is inserted in the housing, the steam blowing pipe vertically is arranged in the filter screen, offer the dozens of purge hole on the scavenging conduit tube wall, steam blowing pipe bottom links to each other with steam inlet duct, offer interior sewage draining exit on the housing base plate of filter screen inboard, the jacket type steam heater is arranged at lower housing portion.

The invention provides a kind of special filter at coke oven crude gas, this filter has steam heater, and the coke oven crude gas temperature that makes filtration is brought up to a certain setting value, do not cool off, good fluidity makes mucus in the raw gas, sticky matter gasification, and crystalline solid distils and passes through with raw gas, impurity is filtered down in the raw gas, and discharges by sewage draining exit; Secondly, this filter design has the steam blowing pipe, if be stained with sticky matter or crystalline solid on the filter screen, can purge it, its intensification is fallen, and discharge from sewage draining exit, just can not clear up and need not take out filter screen.Human body is not had injury, and security is good.

Syllabus for the third time of the present invention be achieved in that a kind of pneumatic cut-off valve that is applicable to coke oven crude gas, be characterized in that it comprises valve body, coal gas advances, outlet, valve seat, spool, valve rod, valve gap, air bag, pallet, groups of springs, the gasbag chamber loam cake, the gasbag chamber lower cover, support, combination and sewage draining exit, coal gas advances, outlet is arranged at the valve body both sides, the valve body upper end links to each other with combination, combination links to each other with valve gap, valve gap links to each other with support, support links to each other with the gasbag chamber lower cover, the gasbag chamber lower cover links to each other with the gasbag chamber loam cake, on the gasbag chamber, form gas between the lower cover and assist the chamber, air bag places in the gasbag chamber, pallet places on the air bag upper surface, the valve rod lower end links to each other with spool, spool places on the interior valve seat of valve body, and combination is passed in the valve rod upper end, valve gap and support link to each other with air bag with pallet in placing gasbag chamber, and groups of springs places on the pallet, gasbag chamber lower cover one side is offered compressed air inlet, and sewage draining exit is opened in the valve body bottom.

The present invention also can be equipped with elastic bellows or spring on the valve rod in combination, to improve the switching strength of valve, accelerates the on-off action of valve and improves sealing reliability.

The invention provides a kind of stop valve that aims at coke oven crude gas, it is the executing agency of power that this valve adopts compressed air, the big and flexibility and reliability of valve opening and closing strength.The valve rod and the spool of this valve are manufactured with stainless steel material, and valve body is cylinder iron manufactured, and valve seat is manufactured with polytetrafluoroethylene (PTFE), has solved etching problem; Polytetrafluoroethylene (PTFE) has good toughness, and is that line contacts with spool, so good airproof performance can not make in the coal gas and let out; The valve bottom blowdown is convenient again, so this valve adapts to the coke oven crude gas use fully.

The 4th secondary objective of the present invention is achieved in that a kind of coke oven half raw gas guide vane formula burner, comprise cylindrical shell, central tube, guide vane, reducing pipe, the adjustable butterfly valve of coal gas and the adjustable butterfly valve of air, the central tube rear portion is inserted in the cylindrical shell, front end is regulated butterfly valve with coal gas and is linked to each other, the air conditioning butterfly valve links to each other with the cylindrical shell air inlet, guide vane is placed on the central tube rear portion in the cylindrical shell, and the reducing pipe is arranged at the cylinder inboard wall rear portion.

This burner combustion required air is provided by air blast, its blast, air quantity is adjustable at any time, air enters to turn to behind the burner by the air conditioning butterfly valve and enters the reducing pipe, wind speed has been improved at the place at the reducing pipe, and through guide vane generation rotation, after this with through coal gas regulate butterfly valve, partially mixed back takes place and enters boiler furnace with flammable mixture and to rotate turbulent shape in central tube and the coal gas that sprays, like this, the big or bigger particle of granularity of density just is rotated air-flow and gets rid of to the air-flow outer rim in the mixture air-flow, form the swirling eddy layer, and the less particle of density or granularity just forms the swirling eddy layer at the mixed airflow inside part, its result just formed outer thick in thin gas particle distribution form, i.e. granularity difference eddy flow burning mixture air-flow radially.In addition, under the effect of high speed swirling eddy, in whole eddy flow, be formed centrally the recirculating zone and entrainment in the burner hearth high-temperature flue gas and form auxiliary air and mix, thereby make capable that coal gas, air and flue gas are able to abundant mixing, increased the diffusion velocity of airborne oxygen, guaranteed the condition of coke oven half raw gas overheavy firing to the combustible particles surface.Secondly, the combustible particles at eddy flow center is little, and specific area is big, and respond is strong, and programming rate is fast, and ignition temperature is low, so, central gas stream will be rapid fire burns, light other airflow layer with the heat of its generation, and make its smooth combustion.Therefore, central gas stream has the double action of igniting and smooth combustion.

In sum, the characteristic that coke oven half raw gas burner is possessed can make its half raw gas normal combustion, can reach the requirement of boiler and other Thermal Equipment safety, normal operation.

Description of drawings:

Fig. 1 is the general arrangement schematic of invention.

Fig. 2 is the left view of Fig. 1.

Fig. 3 is the partial top view of Fig. 1.

Fig. 4 is the another embodiment of the present invention schematic diagram.

Fig. 5 is the other parts connection diagram except that boiler among Fig. 1.

Fig. 6 is a coke oven crude gas heater structure schematic diagram of the present invention.

Fig. 7 is a coke oven crude gas filter structure schematic representation of the present invention.

Fig. 8 is the A-A cut-away view of Fig. 7.

Fig. 9 is the pneumatic cut-off valve structural representation that is applicable to coke oven crude gas of the present invention.

Figure 10 is a burner structure schematic diagram of the present invention.

The specific embodiment:

As Fig. 1～4, the present invention is a kind of full-automatic burning coke oven crude gas boiler with preprocessing function.It comprises boiler body 1, raw gas heater 14, raw gas filter 21,35, burner 57, raw gas gas transmission main 19, half raw gas gas transmission main 41, arm 45 is diffused in test, igniting branch gas tube 61, valve group and control system, raw gas heater 14 tops connect the raw gas entrance sleeve, raw gas gas transmission main 19 is inserted in the bottom, two raw gas filters 21 are connected in parallel on the raw gas gas transmission main 19, half raw gas gas transmission main 41 is inserted in 35 backs, half raw gas gas transmission main 41 inserts burner 57 by main coal gas safety valve 48 and main coal gas stop valve 52, burner 57 links to each other with the front smoke box 2 of boiler body 1, front smoke box 2 links to each other with flue 3, half raw gas gas transmission main 41 is gone forward, after pick out test and diffuse arm 45 and igniting branch gas tube 61, test is diffused and is connected test burner 43 on the arm 45 and diffuse valve 44, and igniting branch gas tube 61 inserts burner 57 burning torches by igniting gas relief valve 63 and igniting gas stop valve 64.

As Fig. 5, Fig. 5 is the other parts connection diagram except that boiler among Fig. 1.Among the figure 4; 6; 7; 8; 10; 11; 23; 24; 25; 26; 30; 31; 34; 37; 39; 40 is stop valve; 5 is magnetic valve; 9; 38 is drain valve; 12 is steam pressure gauge; 13 is temperature controller; 14 is gas heater; 15 is temperature sensor; 16 is bimetallic thermometer; 17; 27; 32 are flange connection ball valve; 18; 28; 33; 50; 54 is the low level water sealed tank; 19 is the raw gas gas transmission main; 20; 22; 29; 36 is gas stop valve; 21; 35 is gas filter drain cock; 41 is half raw gas gas transmission main; 42 is compensator; 43 are the test burner; 44 for diffusing valve; 45 is that arm is diffused in test; 46 is gas pressure indicator before the valve; 47 is coal gas under-voltage protection switch; 48 is main coal gas safety valve; 49; 53; 66; 70 are the ball valve that is threaded; 51 are valve leak detection controller; 52 is main coal gas stop valve; 55 is coal gas overpressure protection switch; 56 is gas pressure indicator behind the valve; 57 is burner; 58 is air under-voltage protection switch; 59 are the igniting air control valve; 60 is the unit blower fan; 61 are the igniting arm; 62 are the igniting gas regulator; 63 are the igniting gas relief valve; 64 are the igniting gas stop valve; 65 is pneumatic manifold; 67 is the compressed air pressure controller; 68 is compressed-air filter; 69 is the compressed air pressure regulator valve.Be the coke oven crude gas pretreating process in the double dot dash line frame among the native system figure.

Raw gas heater 14 tops connect the raw gas entrance sleeve, sidewall connects steam inlet and takes over and the condensate water discharge connection, temperature sensor 15 and bimetallic thermometer 16 back access raw gas gas transmission mains 19 are set on the raw gas discharge connection of bottom, steam inlet is taken over and is gone up series electrical magnet valve 5 and stop valve 4, stop valve 7 in parallel again after 6, series connection drain valve 9 and stop valve 8 on the condensate water discharge connection of raw gas heater 14, stop valve 11 in parallel again after 10, temperature sensor 15 links to each other with temperature controller 13, the executive component of temperature controller 13 links to each other with magnetic valve 5, flange connection ball valve 17 is connected in the gas exit of raw gas heater 14 and takes over, and low level water sealed tank 18 places flange to connect ball valve 17 bottoms.Two raw gas filters 21 are connected in parallel on the raw gas gas transmission main 19, half raw gas gas transmission main 41 is inserted in 35 backs, raw gas filter 21, series connection drain valve 38 and stop valve 37 on 35 the condensate water discharge connection, stop valve 40 in parallel again after 39, gas stop valve 20,22 and 29,36 front and back are connected in the coal gas of two raw gas filters 11 and import and export, stop valve 25,24,26,30,31 and 23,34 are connected to two raw gas filters 21,35 steam inlet and condensate water outlet, flange connects ball valve 27,32 are connected in two raw gas filters 21,35 sewage draining exit, low level water sealed tank 28,33 place flange to connect ball valve 27,32 bottoms.Half raw gas gas transmission main 41 inserts the main coal gas import of burner 57 by main coal gas safety valve 48 and main coal gas stop valve 52; main coal gas safety valve 48 and main coal gas stop valve 52 all link to each other with valve leak detection controller 51, and gas pressure indicator 56 is arranged on the half raw gas house steward 41 behind the main coal gas stop valve 53 behind coal gas overpressure protection switch 55 and the valve.Be provided with on the half raw gas gas transmission main 41 that compensator 42 back is forward and backward to pick out test and diffuse arm 45 and igniting arm 61; test is diffused on the arm 45 and to be connected test burner 43 and to diffuse the test bleeding device that valve 44 is formed, and gas pressure indicator 46 and coal gas under-voltage protection switch 47 are arranged on the half raw gas house steward 41 after arm 45 is diffused in test before the valve.Insert the burning torch of burner 57 on the igniting branch gas tube 61 by igniting gas regulator 62, igniting gas relief valve 63 and igniting gas stop valve 64.Pneumatic manifold 65 inserts main coal gas safety valve 48, main coal gas stop valve 52, igniting gas relief valve 63 and igniting gas stop valve 64 respectively, and be threaded ball valve 66,70, compressed air pressure controller 67, compressed-air filter 68 and compressed air pressure regulator valve 69 are arranged on the pneumatic manifold 65.Unit blower fan 60 links to each other with burner 57 air inlets.Air under-voltage protection switch 58 is arranged at the air intlet of burner 57, and igniting air control valve 59 is arranged between the air intlet and burning torch of burner 57.

Testing burner 43 and diffusing valve 44 is two hand gears that are used each other, normal if the test burner records gas burner, and burning good (the coal gas oxygen content is less than 1%) illustrates that this coal gas is in the safe handling scope, can satisfy normal instructions for use; If test burner flame is unusual, and with explosion sound, illustrates that this coal gas contains oxygen and exceeds standard, if it is entered burner combustion, just might meet accident,, at this moment, just need open and diffuse valve so this coal gas does not meet service condition, when being put into to a certain degree, continue test, until qualified.

Igniting gas relief valve 63 and igniting gas stop valve 64 are specifications of the same race and play a pneumatic cut-off valve of fire gas open and close.Its internal structure is seen accompanying drawing 5, just the no sewage draining exit in bottom.Spool is manufactured with stainless steel material, and valve base seal is manufactured with polytetrafluoroethylene (PTFE), and its sealing and corrosion resistance tool are good.The unlatching of valve is a pneumatically air bag and make valve rod action and drive spool, and when spool was opened, spring was compressed, if the closes compression air, spool is then under the spring force effect and close.So this valve uses flexibly, opening and closing reliable, control is convenient automatically.When normal the use, by program controller control magnetic valve, solenoid control compressed air and realize realizing the action purpose of this valve igniting and extinguish lighting-off torch if having accident, this valve to close automatically, thereby has guaranteed safety.

Main coal gas safety valve 48 and main coal gas stop valve 52 are main coal gas pipeline pneumatic cut-off valves that specification of the same race plays the dual fail-safe effect.Its internal structure is equally also seen accompanying drawing 5.The version of this valve, spool and seat material, switching programme, the essential of exercise, control mode etc. are the same.Just add a sewage draining exit in its underpart.Its effect be exactly this valve in running, if having raffinate and dirt to be stored at the bottom of the valve, can in time discharge, and this valve is used more flexibly (because footpath, main gas pipe crossing is big, and raw gas without interruption is for preventing to stockpile raffinate and dirt at the bottom of the valve, so establish a sewage draining exit).

As Fig. 6, Fig. 6 is the gas heater that is applicable to coke oven crude gas.Mainly by cylindrical shell 80, the upper and lower end socket 76,81 of cylindrical shell, tube sheet 77,90, deflector 88,89, steel pipe 78, gas entry take over 75, gas exit takes over 84, steam inlet takes over 71, condensation-water drain takes over 86, sewage draining exit take over 85 and temperature controller 79, temperature sensor 82, bimetallic thermometer 83, magnetic valve 73 and stop valve 72,74,87 form.Tube sheet 77,90 upper and lower separations are arranged in the cylindrical shell 80, steel pipe 78 two ends are connected on the tube sheet 77,90, and deflector 88,89 semiclosed shape levels are connected in cylindrical shell 80 inwalls, and its open-mouth is upper and lower to be crisscross arranged, make steam in cylindrical shell 80, form three backhauls, increase heat-transfer effect.Gas entry adapter 75 and gas exit are taken over and were connected to upper and lower end socket 76,81 top and bottoms in 84 minutes, steam inlet adapter 71 and condensate water discharge connection 86 are connected in cylindrical shell 80 sidewalls, steam inlet is taken on 71 hand stop valve 87 in parallel again behind the series electrical magnet valve 73 and two hand stop valves 72,74, gas exit is taken on 84 temperature sensor 82 and bimetallic thermometer 83 is set, temperature sensor 82 links to each other with temperature controller 79, and the executive component of temperature controller 79 links to each other with magnetic valve 73.Sewage draining exit is taken over 85 and is connected in low head 81 bottoms.

The function of this heater is achieved in that

In the time of in temperature of exit gas remains on the design temperature scope, the Import Gas amount is heated to the needed heat of design temperature and steam and enters the heat that heater produces and be complementary, if because load is adjusted, gas using quantity reduces, the heater outlet gas temperature raises and surpasses the set temperature value upper limit, temperature sensor sends signal and gives temperature controller, and the executive component of temperature controller sends the signal of telecommunication and steam off to magnetic valve; Identical control during backspace treats that temperature of exit gas drops to the set temperature value lower limit when following, and the steam inlet magnetic valve is opened, so the heater outlet gas temperature remains in the design temperature scope.In addition, if after a period of time operation, heater base is accumulated sediment and raffinate, and sewage draining exit can in time be got rid of, and like this, guarantees that the coke-stove gas heater normally moves.

As Fig. 7-8, the filter that can filter the coke oven crude gas of forming by multiple complicated composition of the present invention.Mainly form by housing 100, coal gas import and export 98,92, circular arc stainless steel filtering net 112, steam blowing pipe 101, jacket type steam heater 103, sewage draining exit 109,110 and flange 91, handle 95, sealing gasket 93, fastening bolt 97 etc.Housing 100 is made up of cylindrical shell 114, lid 96 and base plate 102.Lid 96 usefulness bolts 97 are connected in cylindrical shell 114 upper ends, base plate 102 is welded in cylindrical shell 114 lower ends, coal gas import and export 98,92 is welded in cylindrical shell 114 both sides respectively, filter screen 112 vertically is inserted in the cylindrical shell 114, filter screen is adorned, is torn open for convenience, radially be provided with guide plate 115 on cylindrical shell 114 internal faces, filter screen 112 inserts in the cylindrical shell 114 from top to bottom along guide plate 115.Filter screen 112 upper and lower walls by last back-up ring 94 and following back-up ring 111 be separately fixed at cover 96 and base plate 102 on form a more than half circular arc, filter screen 112 two sides are fixed on cylindrical shell 114 internal faces with gusset 113, thereby will seal between filter screen 112 and cylindrical shell 114 walls.Filter screen center of arc vertically is provided with steam blowing pipe 101, and scavenging conduit 101 offers dozens of purge hole 99 facing on the tube wall of filter screen 112, and seal scavenging conduit 101 upper ends, and the bottom adopts thread connecting mode to be connected on the base plate 102, links to each other with steam inlet duct 105.Offer inside and outside sewage draining exit 109,110 on the base plate of filter screen 112 medial and lateral respectively, inside and outside sewage draining exit 109,110 links to each other with blow-off pipe 106,108 respectively.Jacket type heater 103 is located at housing 100 bottoms and links to each other with housing 100 with welding manner.Steam inlet duct 105 is arranged on jacket type heater 103 housing bottoms.Also be provided with steam inlet duct 105 and condensating water outlet tube 104 on jacket type heater 103 housings.At lid 96 and 114 of cylindrical shells sealing gasket 93 is arranged, and, it is become one with bolt 97 fastening connections, coal gas by the time never allow least bit leakage.

The function of this filter is achieved in that under the effect of jacket type steam heater, coke oven crude gas by filter is indirectly heated to a certain temperature (this temperature realizes by the control quantity of steam), requirement is under this temperature, water in the coke oven crude gas, the benzene class, droplets such as ammonia further gasify, tar drips further gasification and becomes tar fog, naphthalene then distils, non-crystallizable, other composition also raises and corresponding volatilization with temperature, like this, gasification, distillation, volatile matter can pass through filter with coal gas, and impurity wherein and particle are by the filter screen filter down, and discharge from sewage draining exit; If when being stained with goo or crystal on the filter screen, pressure raises before the whole airflow obstruction, filter, and pressure then reduces thereafter, and start reserve filter this moment, and the filter that is obstructed then can be opened the steam blowing pipe and purge it.Directly heat under the double action in purging power and steam, the dirt on the filter screen will fall, and discharges from sewage draining exit, recovers filter to stand-by state.

As Fig. 9, Fig. 9 is the pneumatic cut-off valve structural representation that is applicable to coke oven crude gas of the present utility model.Among the figure among this valve figure this valve form by valve body 121, coal gas import and export 119,122, valve seat 123, spool 124, valve rod 126, valve gap 127, air bag 128, pallet 129, groups of springs 130, gasbag chamber loam cake 132, gasbag chamber lower cover 135, support 136, bellows or spring 116, combination 117, sewage draining exit 120 and attachment bolt 133, diaphragm of rubber 125 etc.Coal gas advances, outlet 119,122 are arranged at valve body 121 both sides, valve body 121 upper ends and combination 117 adopt the bolt connection to connect, diaphragm of rubber 125 sealings are set between valve body 121 and the combination 117,127 of combination 117 and valve gaps adopt the bolt connection to connect, valve gap 127 links to each other with support 136, support 136 links to each other with gasbag chamber lower cover 135, gasbag chamber lower cover 135 links to each other with gasbag chamber loam cake 132, on the gasbag chamber, lower cover 132, form gasbag chamber 131 between 135, air bag 128 places in the gasbag chamber 131, on gasbag chamber, lower cover 132,135 are fixedly connected by bolt 133, pallet 129 places on air bag 128 upper surfaces, valve rod 126 lower ends link to each other with spool 124, spool 124 places on the valve seat 123 in the valve body 121, combination 117 is passed in valve rod 126 upper ends, valve gap 127 and support 136 link to each other with air bag 128 centers with pallet 129 in the gasbag chamber 131, and groups of springs 130 lower ends place on the pallet 129, and the upper end contacts with gasbag chamber loam cake 132.Gasbag chamber lower cover 135 1 sides are offered compressed air inlet 134.Bellows or spring 116 are placed on the interior valve rod 126 of combination, and sewage draining exit 120 is opened in valve body 121 bottoms.

The operation principle of this valve is such: compressed air enters after the gasbag chamber bottom from gasbag chamber lower cover one side, under its pressure effect, move on air bag and the pallet, groups of springs and bellows or spring are compressed simultaneously, valve rod and spool also with on move, spool is just lifted off a seat, this opening of valves, and coal gas passes through; When this valve cut out, first closes compression air was under the double action of groups of springs power and bellows or spring restoring force, air bag and pallet reset, and compressed air is extruded discharge in the gasbag chamber, simultaneously, valve rod and spool move down, and spool compresses valve seat and closes this valve, cuts off coal gas.When the valve prodelta clay has sediment and raffinate, then can open sewage draining exit and in time discharge.

As Figure 10, Figure 10 is coke oven half a raw gas guide vane formula burner structure schematic diagram of the present utility model.This burner is partly-premixed guide vane formula turbulent burner.Mainly form by cylindrical shell 141, central tube 142, guide vane 143, reducing pipe 144, drive end bearing bracket 140, back adpting flange 145, coal gas is adjustable butterfly valve 139, air is adjustable butterfly valve 137 and servo-actuating device 138 etc.Central tube 142 rear portions are inserted in the cylindrical shell 141, front end is regulated butterfly valve 139 with coal gas and is linked to each other, air conditioning butterfly valve 137 links to each other with cylindrical shell 141 air inlets, guide vane 1 43 is placed on central tube 142 rear portions in the cylindrical shell 141, reducing pipe 144 is arranged at cylindrical shell 141 rear portions, and servo-actuating device 138 links to each other with the adjustable butterfly valve 137 of air with the adjustable butterfly valve 139 of coal gas respectively, and drive end bearing bracket 140 is packaged in cylindrical shell 141 front ends, back adpting flange 145 is connected in cylindrical shell 141 inwall rear portions, links to each other with boiler 146.

This burner has good Load Regulation function (ratio adjusting); and regulate bigger (1: 4); and can make coal gas, air proportioning reach the ideal burning ratio; it goes for the normal combustion of coke oven half raw gas; and can when the gas pressure generation is super, under-voltage, protect automatically and report to the police; make stable combustion condition so that in time regulate coal gas, AIR Proportional, thereby guarantee that boiler can both normally move in being low to moderate most the maximum load scope.

Claims (7)

1, a kind of full-automatic burning coke oven crude gas boiler with preprocessing function, it is characterized in that it comprises boiler body (1), raw gas heater (14), raw gas filter (21), (35), burner (57), raw gas gas transmission main (19), half raw gas gas transmission main (41), arm (45) is diffused in test, igniting branch gas tube (61), valve group and control system, raw gas heater (14) top connects raw gas entrance sleeve (1), raw gas gas transmission main (19) is inserted in the bottom, two raw gas filters (21) are connected in parallel on the raw gas gas transmission main (19), (35) half raw gas gas transmission main (41) is inserted in the back, half raw gas gas transmission main (41) inserts burner (57) by main coal gas safety valve (48) and main coal gas stop valve (52), burner (57) links to each other with the front smoke box (2) of boiler body (1), front smoke box (2) links to each other with flue (3), half raw gas gas transmission main (41) is gone forward, after pick out that arm (45) is diffused in test and the branch gas tube (61) of lighting a fire, test is diffused arm (45) and is gone up connection test burner (43) and diffuse valve (44), and igniting branch gas tube (61) inserts burner (57) burning torch by the igniting gas relief valve (63) and the gas stop valve (64) of lighting a fire.

2, according to the described a kind of full-automatic burning coke oven crude gas boiler of claim 1 with preprocessing function, it is characterized in that raw gas heater (14) comprises cylindrical shell (80), on, low head (76), (81), tube sheet (77), (90), pipe group (78), gas entry is taken over (75), gas exit is taken over (84), steam inlet is taken over (71), condensation-water drain is taken over (86), sewage draining exit is taken over (85) and temperature controller (79), temperature sensor (82), magnetic valve (73) and stop valve (72,74), tube sheet (77), (90) on, following separation is arranged in the cylindrical shell (80), pipe group (78) two ends are connected in tube sheet (77), (90) on, gas entry takes over (75) and gas exit adapter (84) branch is connected to, low head (76), (81) top and bottom, steam inlet is taken over (71) and condensate water discharge connection (86) is connected in cylindrical shell (80) sidewall, steam inlet is taken over (71) and is gone up series electrical magnet valve (73) and stop valve (72,74), gas exit is taken on (84) temperature sensor (82) is set, temperature sensor (82) links to each other with temperature controller (79), the executive component of temperature controller (79) links to each other with magnetic valve (73), and sewage draining exit is taken over (85) and is connected in low head (81) bottom.

3, according to the described a kind of full-automatic burning coke oven crude gas boiler of claim 1 with preprocessing function, it is characterized in that raw gas filter (21,35) comprise housing (100), coal gas advances, outlet (98), (92), arc filter screen (112), steam blowing pipe (101) and jacket type steam heater (103), coal gas advances, outlet (98), (92) be arranged at housing (1 00) both sides respectively, filter screen (112) vertically is inserted in the housing (100), steam blowing pipe (101) vertically is arranged in the filter screen (112), offer dozens of purge hole (99) on scavenging conduit (101) tube wall, steam blowing pipe (101) bottom links to each other with steam inlet duct (105), offer interior sewage draining exit (109) on the housing base plate (102) of filter screen (112) inboard, jacket type steam heater (103) is arranged at housing (100) bottom.

4, according to the described a kind of full-automatic burning coke oven crude gas boiler of claim 3 with preprocessing function, sewage draining exit (110) outside it is characterized in that on the housing base plate (102) in filter screen (112) outside, offering.

5, according to the described a kind of full-automatic burning coke oven crude gas boiler of claim 1 with preprocessing function, it is characterized in that main coal gas safety valve (48) and main coal gas stop valve (52) comprise valve body (121), coal gas advances, outlet (119), (122), valve seat (123), spool (124), valve rod (126), valve gap (127), air bag (128), pallet (129), groups of springs (130), gasbag chamber loam cake (132), gasbag chamber lower cover (135), support (136), combination (117) and sewage draining exit (120), coal gas advances, outlet (119), (122) be arranged at valve body (121) both sides, valve body (121) upper end links to each other with combination (117), combination (117) links to each other with valve gap (127), valve gap (127) links to each other with support (136), support (136) links to each other with gasbag chamber lower cover (135), gasbag chamber lower cover (135) links to each other with gasbag chamber loam cake (132), on the gasbag chamber, lower cover (132), (135) form gas between and assist chamber (131), air bag (128) places in the gasbag chamber (131), pallet (129) places on air bag (128) upper surface, valve rod (126) lower end links to each other with spool (124), spool (124) places on the interior valve seat (123) of valve body (121), combination (117) is passed in valve rod (121) upper end, valve gap (127) links to each other with air bag (128) with support (136) pallet (129) interior with placing gasbag chamber (131), groups of springs (130) places on the pallet (129), gasbag chamber lower cover (135) one sides are offered compressed air inlet (134), and sewage draining exit (120) is opened in valve body (121) bottom.

6,, it is characterized in that being nested with elastic bellows or spring (116) on the valve rod (126) in the combination (117) according to the described a kind of full-automatic burning coke oven crude gas boiler of claim 5 with preprocessing function.

7, according to the described a kind of full-automatic burning coke oven crude gas boiler of claim 1 with preprocessing function, it is characterized in that burner (57) comprises cylindrical shell (141), central tube (142), guide vane (143), reducing pipe (144), adjustable butterfly valve of coal gas (139) and the adjustable butterfly valve of air (137), central tube (142) rear portion is inserted in the cylindrical shell (141), front end is regulated butterfly valve (139) with coal gas and is linked to each other, air conditioning butterfly valve (137) links to each other with cylindrical shell (141) air inlet, guide vane (143) is placed on central tube (142) rear portion in the cylindrical shell (141), and reducing pipe (144) is arranged at cylindrical shell (141) inwall rear portion.

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