CN2401263Y

CN2401263Y - Boiler chimney desulfurization dust remover

Info

Publication number: CN2401263Y
Application number: CN 99254017
Authority: CN
Inventors: 刘柱; 张福泉
Original assignee: Department Of Boiler Plumbing Installation Engineering Xinglong Mine Administra
Current assignee: Department Of Boiler Plumbing Installation Engineering Xinglong Mine Administra
Priority date: 1999-11-15
Filing date: 1999-11-15
Publication date: 2000-10-18
Anticipated expiration: 2009-11-15

Abstract

The utility model relates to a boiler chimney desulfurization dust remover, which is main used for solving the problems of complicated equipment, high cost and bad desulfurization efficiency of a desulfurization dust remover. The utility model is composed of a dust remover body, a reaction tank and an ash cleaner, wherein, the dust remover body comprises a smoke inlet pipe, a spraying water supplying system and a flue; the smoke passes a net film and is impacted and sprayed for thrice purifying; the smoke is discharged in air after the smoke and water are separated. The bottom of the reaction tank is designed into a bevel; one side of the deep edge of the reaction tank is provided with an ash water separate tank which is communicated with the bottom; an ash cleaning wheel is arranged in the ash water separate tank; the ash can be automatically cleaned. The utility model is suitable for desulfurization and dust remover for boilers burning various coal.

Description

The boiler smoke desulfurizing dust-collector

The utility model relates to a kind of deduster that purifies boiler smoke, particularly wet method sulphur removing and dust removing device.

Wet method sulphur removing and dust removing device kind is a lot, CN2238676Y discloses a kind of " high-efficient desulfation dust-extraction device ", be in series by deduster, devulcanizer and drying tower, one group of movement that is made of guider, whirlwind and blast pipe is set in the drying tower, so that the moisture flue gas vortex outside guider spiral outer tube rotates formation from bottom to top that enters in the tower is transferred upwards pipe and blast pipe discharge in whirlwind, guider then until whirlwind bottom.From as can be seen above, the disclosed desulfurizer of this patent only aqueous vapor separation just is provided with a drying tower, and with regard to whole deduster, it is more numerous and more jumbled structurally to seem, thereby certainly will produce problems such as taking up an area of big, operation and maintenance cost height.And general medium small boiler gas cleaning treating apparatus, be to adopt the clean room of two S passages to purify flue gas, method treatment and purification liquid with cooling and adding lime, and generally need join sedimentation basin, come deashing by being contained in scraping machine in the sedimentation basin, that be made up of the pan on chain and the chain shaft, this dust arrester equipment operation parts are more, and this has increased the resistance of equipment operation on the one hand, simultaneously also exist floor space big, operation and the high disadvantage of maintenance cost.

For this reason, the utility model provides a kind of boiler smoke desulfurizing dust-collector, goes out on fume side is advanced, overall structure is the monotubular embedded, and compact conformation does not need sedimentation basin, digs facilities such as grey machine, water circulating pump, reduce equipment operation parts and floor space, correspondingly also just reduced fund input.

For achieving the above object, the technical scheme that the utility model adopted is:

The boiler smoke desulfurizing dust-collector is by the deduster body, be positioned at the reaction tank of deduster body below, constitute with the deashing wheel, the deduster body comprises: smoke-intake pipe, flue, wherein the port of export of smoke-intake pipe places reaction tank, the lower end of flue places reaction tank, and there is the impeller dehydrator middle and upper part of flue; Flue gas chemical absorbing through reaction tank water-bath and limewash under the blower fan graviational interaction is discharged along the impeller dehydrator dehydration back of passing through on the flue like this.The reaction tank bottom surface is an inclined-plane, and the shallow limit of reaction tank one side has the ash of throwing mouth, is used to throw in absorbent; The dark limit of reaction tank one side has lower end and the Ash Water Separator pond that communicates at the bottom of the reaction tank, and the deashing wheel promptly places the Ash Water Separator pond.The salt that sulphur nitrogen oxide in the flue gas and limewash reaction generate slides in the Ash Water Separator pond under the pond, goes out lime-ash by the deashing schedule.

For improving the desulfurization dust-removing efficiency of deduster, can also on the deduster body, set up a cover spray moisturizing pipeline, add the switch device on the pipeline, whether need to open spray system so that look the actual conditions decision; A branch of pipeline passes smoke-intake pipe and places reaction tank, the pipeline that is positioned at smoke-intake pipe inside is provided with the spray nethike embrane, the desulfurization and dedusting first time that is used for flue gas, another branch of spray moisturizing pipeline places middle and upper part in the flue, port has spray thrower, is used for the flue gas after the water-bath is further purified.

The smoke-intake pipe arrival end has silk screen plate, and flue gas mixes with the absorption liquid of the spray nethike embrane ejection that is arranged on smoke-intake pipe inside after the silk screen plate homogenizing, realizes desulfurization and dedusting for the first time.

The smoke-intake pipe port of export has air-flow distributor, makes the flue gas that purifies through the first time even, and impact-response Chi Shui realizes impacting for the second time purification at high speed.

The smoke-intake pipe port of export and reaction tank connecting part add wire-mesh screen desulfurization ring, and the acid of the water-soluble generation of oxysulfide in the flue gas combines generation salt and deposits with metal like this, does not influence recycling of reaction tank water.

The port of export of flue has water fender.

Because this deduster is the monotubular formula, and reaction tank can imbed undergroundly, so saved the occupation of land space, makes manufacturing cost simultaneously, and mounting cost is relatively wanted much less with like product; And adopt pulverized limestone to make the absorbent of SO2, and establish spray, moisturizing pipeline, make equipment operation parts greatly reduce, reduced operation and maintenance cost; Adopt the fume-dehydrating after the impeller dehydrator makes water-bath, just can solve the problem of fume-dehydrating, make device structure compact more without drying tower; Deashing wheel deashing by placing the lower end with the Ash Water Separator pond that communicates at the bottom of the reaction tank does not need sedimentation basin, and grey machine is dug at gantry, and facilities such as water circulating pump just can be realized Ash Water Separator, have reduced floor space and fund input widely.Because flue gas passed through nethike embrane, spray and impact desulfurization and dedusting three times, make desulfuration efficiency can reach 81%, desulfuration efficiency is greater than 93%, discharging flue gas lingemann blackness is less than 1 grade, and the damage by water rate of integral device is less than 5%, and the liquid content of discharging gas can be controlled between 0.1-0.7 liter/cubic meter.

Below in conjunction with accompanying drawing the utility model being done one describes in detail:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of desulfurization ring;

Fig. 3 is the structural representation of silk screen plate.

The boiler smoke desulfurizing dust-collector is by deduster body 1, and the reaction tank 2 and the deashing wheel 3 that are positioned at deduster body 1 below constitute, and deashing wheel 3 places lower end and the Ash Water Separator pond 4 that communicates at the bottom of the reaction tank.Deduster body 1 comprises: smoke-intake pipe 5, flue 6, spray moisturizing pipeline 7, wherein the port of export of smoke-intake pipe 5 places reaction tank 2, the lower end of flue 6 places reaction tank 2, a branch of spray moisturizing pipeline 7 passes smoke-intake pipe 5 and places reaction tank, the pipeline that is positioned at smoke-intake pipe inside is provided with spray nethike embrane 9, another branch of spray moisturizing pipeline places middle and upper part in the flue 6, port has spray thrower 12, add the switch device on the pipeline, whether need to open spray system so that look the actual conditions decision.The porch of smoke-intake pipe 5 be provided with silk screen plate 8 flue gases through after the silk screen plate homogenizing be arranged on smoke-intake pipe 5 on the absorption liquid of spray nethike embrane 9 ejection mixes, realize the desulfurization and dedusting first time; Absorption liquid can be water or limewash; Flue-gas temperature descends simultaneously, through the flue gas of desulfurization and dedusting for the first time after air-flow distributor 10 distributes, quickens, the limewash in the high speed impact reaction tank downwards, the bottom surface of reaction tank 2 is an inclined-plane, reaction tank 2 shallow limits one side has the ash of throwing mouth 11, is used to throw in desulfurizing agents such as lime stone; Flue gas enters in the reaction tank, the dust in the flue gas, and the sulphur nitrogen oxide generates salt through water-bath and with limewash generation chemical reaction, realizes purifying for the second time; Also be added with wire-mesh screen desulfurization ring 14 at smoke-intake pipe 5 ports of export and reaction tank 2 connecting parts, the acid of the water-soluble generation of oxysulfide in the flue gas just can combine generation salt with metal and deposit like this, does not influence recycling of reaction tank water.And the solid content of Chi Shuizhong slides in the Ash Water Separator pond 4 under reaction tank by inertia force, gravity, impact force, adhesive force, cohesiveness etc., goes out lime-ash by the deashing schedule.Rise under the blower fan graviational interaction through the flue gas of reaction tank desulfurization and dedusting and the water smoke that is evoked by flue gas, spray, meet once more, realize desulfurization and dedusting for the third time with absorption liquid under by spray thrower 12 sprays; Under the blower fan graviational interaction, continue uply through the flue gas of three desulfurization and dedustings, after 13 dehydrations of impeller dehydrator, can be discharged in the atmosphere.The port of export of flue can be provided with water fender.

Claims

1, a kind of boiler smoke desulfurizing dust-collector, by the deduster body, be positioned at the reaction tank of deduster body below, constitute with the deashing wheel, it is characterized in that: the deduster body comprises smoke-intake pipe, flue, and wherein, the port of export of smoke-intake pipe places reaction tank, the lower end of flue places reaction tank, and there is the impeller dehydrator middle and upper part of flue; The reaction tank bottom surface is an inclined-plane, and the shallow limit of reaction tank one side has the ash of throwing mouth, and the dark limit of reaction tank one side has lower end and the Ash Water Separator pond that communicates at the bottom of the reaction tank, and the deashing wheel promptly places the Ash Water Separator pond.

2, boiler smoke desulfurizing dust-collector according to claim 1, it is characterized in that: the deduster body also comprises spray moisturizing pipeline, a branch of pipeline passes smoke-intake pipe and places reaction tank, the pipeline that is positioned at smoke-intake pipe inside is provided with the spray nethike embrane, another branch of spray moisturizing pipeline places middle and upper part in the flue, and port has spray thrower.

3, boiler smoke desulfurizing dust-collector according to claim 1 and 2, it is characterized in that: the smoke-intake pipe port of export has air-flow distributor.

4, boiler smoke desulfurizing dust-collector according to claim 1 and 2 is characterized in that: the smoke-intake pipe port of export and reaction tank connecting part add wire-mesh screen desulfurization ring.

5, boiler smoke desulfurizing dust-collector according to claim 1 and 2, it is characterized in that: the port of export of flue has water fender.