CN209445379U - A kind of sludge circulating fluid bed incinerator - Google Patents

Abstract

The utility model belongs to sludge incineration technical field.The firing efficiency of fluidized bed incinerator is lower at present.For the problems of the prior art, the utility model discloses a kind of sludge circulating fluid bed incinerators, including furnace body, separator, blast pipe, a secondary wind inleting tube；Agitating device, fluidized bed and cloth bellows are equipped in furnace body, agitating device includes horizontal shaft and the paddle in shaft；The bellows blast cap in a plurality of annular spread is equipped at the top of cloth bellows, the ventilation hole on bellows blast cap in each item annular is along same circumference direction counterclockwise；Sidewall of the furnace body is equipped with secondary air inlet, feed inlet and the air inlet communicated with cloth bellows inner cavity being connected with secondary wind inleting tube；Bottom of furnace body is equipped with the cooling storehouse with cooling jacket；It is communicated at the top of separator with furnace body top, bottom is connected to by refeed line with furnace body, and the flue at the top of separator is equipped with tail portion heat-transfer surface, flue gas purification device and fume dust remover.The utility model firing efficiency is high.

Description

A kind of sludge circulating fluid bed incinerator

Technical field

The utility model relates to a kind of incinerators, and in particular to a kind of sludge circulating fluid bed incinerator belongs to sludge and burns Burning technology field.

Background technique

Sewage treatment plant can generate sludge during handling sewage, and sludge needs after dehydration equipment is dehydrated Burning disposal is carried out, is discharged with reaching the harmless requirement of decrement.Fluidized bed incinerator is mostly used to carry out sludge greatly at present Burning disposal, this incinerator are that by incinerator bottom, into furnace body, air feed is combustion-supporting and disturbs material to burn to sludge , big, the non-uniform disadvantage of wind pressure that there are windages be easy to cause the undercompounding of mud granule and air in furnace, burning Efficiency is not ideal enough, containing a large amount of imperfect combustion organic particles in the flue gas of discharge, has aggravated subsequent to fume treatment Burden.

Utility model content

For the problems of the prior art, the utility model provides a kind of sludge circulating fluid bed incinerator, the incinerator Firing efficiency it is high.

To realize the above technical purpose, the technical solution of the utility model is:

A kind of sludge circulating fluid bed incinerator, including furnace body, separator, an air inlet system, secondary air system；Institute It states and is successively arranged agitating device, fluidized bed and cloth bellows in furnace body from top to bottom, the agitating device includes horizontally disposed turn Axis and the paddle being fixedly installed in shaft, shaft is by the motor driven that is fixedly installed in outside furnace body；The fluidized bed is by furnace Internal body portion is at combustion chamber and air compartment；The bellows blast cap in a plurality of annular spread is equipped at the top of the cloth bellows, bellows blast cap is vertical Blind hole is offered to middle part, the lower end of blind hole is communicated with the inner cavity of cloth bellows, and blind hole opens up that there are two in interior low at cecum The inclined ventilation hole of outer high shape, the ventilation hole on bellows blast cap being distributed in each annular is counterclockwise along same circumference Direction；The sidewall of the furnace body is equipped with secondary air inlet, feed inlet and an air inlet, and feed inlet is located under secondary air inlet Side, and it is located at the top of agitating device, one time air inlet is located at bottom of furnace body；The bottom of furnace body is equipped with cooling storehouse, leads slag storehouse It is connected with the slag-drip opening for being set to bottom of furnace body, is equipped with the first residual cake valve of folding slag-drip opening at the top of cooling storehouse, bottom is equipped with the Two residual cake valves, cooling storehouse are externally provided with cooling water jecket；It is connected at the top of the separator with furnace body top, is equipped at the top of separator Smoke outlet, smoke outlet are connected with flue, and tail portion heat-transfer surface, flue gas purification device and flue gas are disposed on flue Dust-extraction unit, separator bottom are connected to by refeed line with furnace body inner cavity；

Air inlet system includes a blast pipe, primary air inlet air preheater and once enters the wind air blower；Institute It states a blast pipe to be connected across an air inlet with cloth bellows inner cavity, primary air inlet air is successively arranged on a blast pipe Preheater and primary air inlet air blower；The secondary air system includes secondary wind inleting tube, secondary air air preheater and two Secondary air inlet air blower；The secondary wind inleting tube is connected with secondary air inlet, and secondary air air is successively arranged on secondary wind inleting tube Preheater and secondary air air blower.

The utility model structure is simple, can enter burning to by feed inlet by the way that agitating device is arranged above fluidized bed Sludge in furnace is stirred in real time, is prevented from dropping down onto the mud granule on fluidized bed and is condensed into blocks, influences mud granule and air Come into full contact with, improve firing efficiency, make burn it is more thorough；Air supply mode by improving First air can effectively reduce in furnace The windage of combustion air, and keep wind pressure uniform, so that mud granule and air be made easily to be sufficiently mixed uniformly, substantially increase burning effect Rate；By the way that separator is arranged, can by by flue gas take folder do not burn after the separation of complete mud granule along refeed line again into Enter and carry out circulation burning in furnace body Burning Room, can be further improved the efficiency of sludge incineration, makes the more thorough of sludge incineration.This It outside, can be to the hot sludge ash for falling into cooling storehouse after burning by being provided with the cooling storehouse of cooling water jecket in bottom of furnace body Slag is fully cooled rear direct emission, eliminates and subsequent carries out cooling tedious steps to sludge lime-ash using lag cooler.

Preferably, horizontally disposed cloth vane, cloth vane inner cavity and secondary wind inleting tube are equipped in the combustion chamber It is connected, cloth vane bottom is equipped with the vane blast cap of annular spread, and vane blast cap includes cap body and cap seat, and cap body is solid by cap seat It is scheduled on cloth vane, cap body is the cone being tilted to the right, and cap body longitudinal middle part is provided with cap body ventilation hole, cap body ventilation hole and wind The inner cavity of ring communicates, and the cap body ventilation hole on each vane blast cap is along same circumference direction clockwise.The utility model passes through The air supply mode for improving Secondary Air can slow down the spilling speed of burning sludge particle, extend the time that mud granule burns, and protect Demonstrate,prove the full combustion of mud granule.

As further preferred scheme, the secondary wind inleting tube and cloth vane outer rim are tangent.

Preferably, a blast pipe and cloth bellows outer rim are tangent.

Preferably, baffle is hinged on the furnace body wall, baffle is located at the connectivity part of furnace body and refeed line.Pass through Baffle is set, the sludge burned in combustion chamber can be prevented to be tempered to refeed line, influence production safety and service life of equipment.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the utility model A-A to structural schematic diagram；

Fig. 3 is the utility model B-B direction structural schematic diagram；

Fig. 4 is the structural schematic diagram of bellows blast cap in the utility model；

Fig. 5 is the structural schematic diagram of vane blast cap in the utility model；

Appended drawing reference:

100. 112. flue gas purification device of separator 110. flue, 111. tail portion heat-transfer surface, 113. flue gas ash removal 2112. cap seat of device 120. refeed line, 200. furnace body, 210. cloth vane, 211. vane blast cap, 2111. cap body, 2113. cap 240. cloth bellows of body ventilation hole 220. agitating device, 221. shaft, 222. paddle, 230. fluidized bed, 241. bellows blast cap The once air inlet air preheat of 2411. blind hole, 2412. ventilation hole, 250. feed inlet, 260. baffle, 310. blast pipes 320. Once air inlet 410. secondary wind inleting tube of air blower, 420. secondary air air preheater, the 430. secondary air air blast of device 330. 500. cooling storehouse of machine, 510. first 520. second residual cake valve of residual cake valve, 530. cooling water jecket

Specific embodiment

In conjunction with Fig. 1 to Fig. 5, a specific embodiment of the utility model is described in detail, but not to the power of the utility model Benefit requires to do any restriction.

As shown in Figures 1 to 5, a kind of sludge circulating fluid bed incinerator, including furnace body 200, separator 100, once into Wind system, secondary air system；

Cloth vane 210, agitating device 220, fluidized bed 230 and cloth bellows are successively arranged in the furnace body 200 from top to bottom 240, wherein fluidized bed 230 will be divided into combustion chamber and air compartment inside furnace body 200；The cloth vane 210 is horizontally placed on combustion chamber Interior, 210 bottom of cloth vane is equipped with the vane blast cap 211 of annular spread, and vane blast cap 211 includes cap body 2111 and cap seat 2112, Cap body 2111 is fixed on cloth vane 210 by cap seat 2112, and cap body 2111 is the cone being tilted to the right, and cap body 2111 is vertical It is provided with cap body ventilation hole 2113 to middle part, cap body ventilation hole 2113 is communicated with the inner cavity of vane, the cap on each vane blast cap 211 Body ventilation hole 2113 is along same circumference direction clockwise；The agitating device 220 is located in combustion chamber, agitating device 220 Including horizontally disposed shaft 221 and the paddle 222 being fixedly installed in shaft 221, shaft 221 is by being fixedly installed in furnace body Motor driven outside 200；The cloth bellows 240 are located at air compartment bottom, are equipped at the top of cloth bellows 240 in a plurality of annular spread Bellows blast cap 241,241 longitudinal middle part of bellows blast cap offer blind hole 2411, and the lower end of blind hole 2411 is interior with cloth bellows 240 Chamber communicates, and blind hole 2411 is opened up at cecum there are two the inclined ventilation hole 2412 for being in interior low outer high shape, and each is annular Ventilation hole 2412 on the bellows blast cap 241 of upper distribution is along same circumference direction counterclockwise；

200 side wall of furnace body is equipped with secondary air inlet, feed inlet 250 and an air inlet, feed inlet 250 and is located at The lower section of secondary air inlet, and it is located at the top of agitating device 220, one time air inlet is located at 200 bottom of furnace body；

The bottom of furnace body is equipped with cooling storehouse 500, and cooling storehouse 500 is connected with the slag-drip opening for being set to bottom of furnace body, cooling The first residual cake valve 510 of folding slag-drip opening is equipped at the top of storehouse 500, bottom is equipped with the second residual cake valve 520, and cooling storehouse 500 is externally provided with Cooling water jecket 530；When needing deslagging, the second residual cake valve 520 is closed, opens the first residual cake valve 510, the dirt after sludge incineration Plaster slag is fallen into after cooling storehouse 500 from slag-drip opening closes the first residual cake valve 510, sludge lime-ash after cooling storehouse 500 is fully cooled, Open the second residual cake valve 520, the discharge of sludge lime-ash；

It is connected at the top of 100 top of separator and furnace body, smoke outlet, smoke outlet and cigarette is equipped at the top of separator 100 Feed channel 110 is connected, and tail portion heat-transfer surface 111, flue gas purification device 112 and flue gas ash removal are disposed on flue 110 Device 113, wherein tail portion heat-transfer surface 111 is by waste heat boiler or high temperature superheater, low temperature superheater, economizer, air preheat The composition such as device, for cooling down to high-temperature flue gas, high-temperature flue gas flows through and is arranged in tail portion after tail portion heat-transfer surface 111 is cooling The flue gas purification device 112 in 111 downstream of heat-transfer surface carries out the purified treatments such as desulphurization and denitration, only in flue gas purification device 112 Flue gas after change is discharged into atmosphere after further passing through 113 dedusting of fume dust remover in downstream；100 bottom of separator passes through Refeed line 120 is connected to furnace body inner cavity, wherein to prevent the sludge burned in combustion chamber to be tempered to refeed line, influences production peace Complete and service life of equipment is hinged with baffle 260 on furnace body wall, and baffle 260 is located at the connectivity part of furnace body and refeed line；

Air inlet system includes a blast pipe 310, primary air inlet air preheater 320 and once enters the wind air blast Machine 330；Blast pipe 310 pass through an air inlet be connected with 240 inner cavity of cloth bellows, and with 240 outer rim of cloth bellows It is tangent, primary air inlet air preheater 320 and primary air inlet air blower 330 are successively arranged on a blast pipe 310；

The secondary air system includes secondary wind inleting tube 410, secondary air air preheater 420 and secondary air air blast Machine 430；The secondary wind inleting tube 410 pass through secondary air inlet be connected with 210 inner cavity of cloth vane, and with 210 outer rim of cloth vane It is tangent, secondary air air preheater 420 and secondary air air blower 430 are successively arranged on secondary wind inleting tube 410.

Working principle:

Primary air inlet air blower is sent into cloth bellows after preheating First air by once air inlet air preheater, hot wind warp Along same circumference, direction is blown into furnace body ventilation hole on the bellows blast cap of a plurality of annular spread counterclockwise, intracorporal into furnace First air is rotated, the bed material fluidisation in fluidized bed is got up, sludge enters furnace body from feed inlet and drops down on fluidized bed, in bed material Flowing drive under, mud granule floats up and down, and burns after coming into full contact with the intracorporal air of furnace, wherein by fluidized bed Agitating device is arranged in top, can be stirred in real time into the intracorporal sludge of furnace, prevent from dropping down onto the sludge on fluidized bed Grain is condensed into blocks, and influences the fluid effect of fluidized bed；During the burning process, Secondary Air is passed through two to sludge by secondary air air blower It is sent into cloth vane after secondary air inlet air preheater preheating, hot wind is through the cap body ventilation hole on the vane blast cap on cloth vane along same One circumference is rotated down clockwise to be blown into furnace body, to slow down the spilling speed of burning sludge particle, is extended mud granule and is burnt The time of burning guarantees the full combustion of mud granule；The flue gas generated during sludge incineration enters separator at the top of furnace body In, wherein by the complete mud granule that do not burn that flue gas takes folder furnace body is again introduced into along refeed line after separator separates is burnt It burns interior and carries out circulation burning, the flue gas after separation enters in flue at the top of separator, successively via on flue Tail portion heat-transfer surface, flue gas purification device and fume dust remover processing after be discharged into atmosphere；The second residual cake valve is closed, opens first Residual cake valve, the sludge lime-ash after sludge incineration close the first residual cake valve after falling into cooling storehouse from slag-drip opening, and sludge lime-ash is in cooling After storehouse is fully cooled, the second residual cake valve, the discharge of sludge lime-ash are opened.

In conclusion the utility model has the advantage that

1. the utility model structure is simple, can be burnt to being entered by feed inlet by the way that agitating device is arranged above fluidized bed The sludge burnt in furnace is stirred in real time, is prevented from dropping down onto the mud granule on fluidized bed and is condensed into blocks, and mud granule and sky are influenced Gas comes into full contact with, and improves firing efficiency, makes to burn more thorough.

2. the utility model can effectively reduce the windage of combustion air in furnace by improving the air supply mode of First air, and make Wind pressure is uniform, so that mud granule and air be made easily to be sufficiently mixed uniformly, greatly improves the efficiency of combustion of sludge, is effectively reduced The subsequent burden to fume treatment.

3. the utility model can slow down the spilling speed of burning sludge particle by improving the air supply mode of Secondary Air, prolong The time that long mud granule burns, guarantee the full combustion of mud granule.

4. the utility model can be separated the complete mud granule that do not burn for taking folder by flue gas by setting separator It is again introduced into furnace body Burning Room along refeed line afterwards and carries out circulation burning, can be further improved the efficiency of sludge incineration, make dirt Mud burns more thorough.

It, can be to being fallen into after burning 5. the utility model is by being provided with the cooling storehouse of cooling water jecket in bottom of furnace body The hot sludge lime-ash of cooling storehouse is fully cooled rear direct emission, eliminate it is subsequent sludge lime-ash is carried out using lag cooler it is cooling Tedious steps.

6. baffle is arranged by the connectivity part in furnace body and refeed line in the utility model, burning in combustion chamber can be prevented Sludge is tempered to refeed line, influences production safety and service life of equipment.

It is understood that being merely to illustrate the utility model above with respect to the specific descriptions of the utility model and not being It is limited to technical solution described in the utility model embodiment.Those skilled in the art should understand that still can be with It modifies to the utility model or equivalent replacement, to reach identical technical effect；Needs are used as long as meeting, all in this reality Within novel protection scope.

Claims (5)

1. a kind of sludge circulating fluid bed incinerator, which is characterized in that including furnace body, separator, an air inlet system, it is secondary into Wind system；Agitating device, fluidized bed and cloth bellows are successively arranged in the furnace body from top to bottom, the agitating device includes level The shaft of setting and the paddle being fixedly installed in shaft, shaft is by the motor driven that is fixedly installed in outside furnace body；The stream Change bed and furnace interior is divided into combustion chamber and air compartment；The bellows blast cap in a plurality of annular spread, wind are equipped at the top of the cloth bellows Case blast cap longitudinal middle part offers blind hole, and the lower end of blind hole is communicated with the inner cavity of cloth bellows, and blind hole offers two at cecum A inclined ventilation hole in interior low outer high shape, the ventilation hole on bellows blast cap being distributed in each annular is along same circumference Direction that line is counterclockwise；The sidewall of the furnace body be equipped with secondary air inlet, feed inlet and an air inlet, feed inlet be located at it is secondary into The lower section in air port, and it is located at the top of agitating device, one time air inlet is located at bottom of furnace body；The bottom of furnace body is equipped with cooling Storehouse leads slag storehouse and is connected with the slag-drip opening for being set to bottom of furnace body, and the first residual cake valve of folding slag-drip opening, bottom are equipped at the top of cooling storehouse Portion is equipped with the second residual cake valve, and cooling storehouse is externally provided with cooling water jecket；It is connected at the top of the separator with furnace body top, separator Top is equipped with smoke outlet, and smoke outlet is connected with flue, and tail portion heat-transfer surface, gas cleaning dress are disposed on flue It sets and fume dust remover, separator bottom is connected to by refeed line with furnace body inner cavity；Air inlet system includes primary Blast pipe once enters the wind air preheater and once enters the wind air blower；Blast pipe passes through an air inlet and cloth wind Box cavity is connected, and primary air inlet air preheater and primary air inlet air blower are successively arranged on a blast pipe；It is described secondary Air inlet system includes secondary wind inleting tube, secondary air air preheater and secondary air air blower；The secondary wind inleting tube and two Secondary air inlet is connected, and secondary air air preheater and secondary air air blower are successively arranged on secondary wind inleting tube.

2. sludge circulating fluid bed incinerator as described in claim 1, which is characterized in that set in the combustion chamber equipped with level The cloth vane set, cloth vane inner cavity are connected with secondary wind inleting tube, and cloth vane bottom is equipped with the vane blast cap of annular spread, vane Blast cap includes cap body and cap seat, and cap body is fixed on cloth vane by cap seat, and cap body is the cone being tilted to the right, and cap body is longitudinal Middle part is provided with cap body ventilation hole, and cap body ventilation hole is communicated with the inner cavity of vane, and the cap body ventilation hole on each vane blast cap is along same One circumference direction clockwise.

3. sludge circulating fluid bed incinerator as claimed in claim 2, which is characterized in that the secondary wind inleting tube and cloth vane Outer rim is tangent.

4. sludge circulating fluid bed incinerator as described in claim 1, which is characterized in that a blast pipe and cloth bellows Outer rim is tangent.

5. sludge circulating fluid bed incinerator as described in claim 1, which is characterized in that be hinged with gear on the furnace body wall Plate, baffle are located at the connectivity part of furnace body and refeed line.