CN201291108Y - Dust removing device of water-bath spraying net barrier - Google Patents

Dust removing device of water-bath spraying net barrier Download PDF

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Publication number
CN201291108Y
CN201291108Y CNU2008202223061U CN200820222306U CN201291108Y CN 201291108 Y CN201291108 Y CN 201291108Y CN U2008202223061 U CNU2008202223061 U CN U2008202223061U CN 200820222306 U CN200820222306 U CN 200820222306U CN 201291108 Y CN201291108 Y CN 201291108Y
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CN
China
Prior art keywords
water
dust
bath
chamber
water bath
Prior art date
Application number
CNU2008202223061U
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Chinese (zh)
Inventor
张燕丽
陈进
杜玉怀
康六生
裴长有
Original Assignee
宝鸡铁塔厂
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Application filed by 宝鸡铁塔厂 filed Critical 宝鸡铁塔厂
Priority to CNU2008202223061U priority Critical patent/CN201291108Y/en
Application granted granted Critical
Publication of CN201291108Y publication Critical patent/CN201291108Y/en

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Abstract

The utility model relates to a water bath spray grid dust-removing device which is provided with a water bath chamber, and an induced fan pipe inducing gas to be purified is arranged in the water bath chamber; a spray head is arranged in the water bath chamber; the other side of the water bath chamber is provided with a dust accumulating pool; a smoke gas outlet between the water bath chamber and the dust accumulating pool is provided with filter grids; and the top part of the filter grids is provided with a water inlet pipe and a gas exhaust pipe. The dust-removing device has wide scope of application, higher dust-removing efficiency than a dry type dust remover, simple structure and convenient construction. The water bath spray grid dust-removing technology not only can reduce dust emission concentration and make smoke dust not be taken to a smoke channel again by smoke gas, absorbs sulphur dioxide and oxynitride, and achieves multiple purposes.

Description

Water-bath spray net grid dust arrester

Technical field

The utility model belongs to purification technology field, particularly to the purification apparatus of flue dust.

Background technology

1., eliminate fume amount at present, the main contents of smoke and dust treatment comprise 4 aspects:; 2., SO 2Uptake; 3., NO XUptake; 4., lingemann blackness is not higher than 1 grade.1., mechanical force dedusting (being gravitational dust collection, inertial dust collection, cyclone dust removal) and the method for administering flue dust is varied, roughly can be summed up as following 4 classes:; 2., wet dust removal (being lector, foam dust-removing, Venturi tube dedusting); 3., filtering type dedusting (being the dedusting of low speed bag, pulse packet dedusting, stratum granulosum dedusting); 4., electric precipitation (being dry type static dust, wet static dedusting).The damage of easily hardening of the dust settling pocket of filtering type dedusting, and be difficult for absorbing SO 2And NO X, increase renewal and the maintenance cost of filtration dust catcher to dust settling pocket.

Summary of the invention

The utility model purpose is a kind of water-bath spray of design net grid dust arresters, to solve the problem that existing smoke and dust treatment equipment exists.

Specifically, water-bath spray net grid dust arrester, has the water-bath chamber, it is equipped with in the water-bath chamber introduces the air-introduced machine pipe of desiring Purge gas, at the indoor spray head that is equipped with of water-bath, an other side is provided with the dust stratification pond in the water-bath chamber, on the exhanst gas outlet between water-bath chamber and the dust stratification pond screen pack grid is housed, and screen pack grid top is water inlet pipe and blast pipe.

Be placed with inclined-plane tool impact baffle plate in bottom, water-bath chamber.Place, dead angle in impact baffle plate is equipped with spray head.

Also have expansion chamber in the water-bath chamber, the dust stratification pond is positioned at the expansion chamber outside, and overflow valve and overfall are housed on the dust stratification pond.

The difference of the utility model water-bath spray net grid dust arrester and other dedusters:

1. water-bath spray net grid deduster can replenish the deficiency of mechanical force dedusting, and he can absorb the SO in the flue gas 2And NO X, reduce atmosphere pollution.

2. water-bath spray net grid deduster belongs to the wet dust removal scope, but is better than early stage lector, foam dust-removing, Venturi tube dust arrester, and the plant investment that he adopts is few, antiseptic power strong, can reduce maintenance cost.

3. water-bath spray net grid deduster is compared with the filtering type dedusting, and the maintenance capacity of water-bath spray net grid dedusting is few, damages of easily hardening of the dust settling pocket of filtering type dedusting, and be difficult for absorption SO 2And NO X, increase renewal and the maintenance cost of filtration dust catcher to dust settling pocket.

4. water-bath spray net grid deduster is compared with electric precipitation, and one-time investment is few, energy consumption is low, maintenance cost is low.

Steaming the ton boiler with one 4 is that example is calculated:

1, economic benefit: on average can reduce 100,000 yuan of charges for disposing pollutants every year; 20,000 yuan of project gross investments, be 1.5 months payoff period

2, social benefit: improved local atmospheric environment, on average can reduce smoke discharge amount every year: 65755 kilograms; SO2 emissions: 17304 kilograms; Nitrogen oxide emission: 4186 kilograms;

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is a dust stratification pond sectional view in the utility model.

The specific embodiment

Fig. 1,2 has provided the utility model water-bath spray net grid dust arrester specific embodiment.It has water-bath chamber 3, in water-bath chamber 3, be equipped with and introduce the air-introduced machine pipe 1 of desiring Purge gas, spray head 9 is housed in water-bath chamber 3,3 other sides are provided with dust stratification pond 4 in the water-bath chamber, on the exhanst gas outlet between water-bath chamber 3 and the dust stratification pond 4 screen pack grid 10 are housed, screen pack grid 10 tops are water inlet pipe 8 and blast pipe 7.Be placed with inclined-plane tool impact baffle plate 2 in 3 bottoms, water-bath chamber.Place, dead angle in impact baffle plate 2 is equipped with spray head 9.Also have expansion chamber 11 outside water-bath chamber 3, dust stratification pond 4 is positioned at expansion chamber 11 outsides, and overflow valve 5 and overfall 6 are housed on the dust stratification pond 4.

1, the making of expansion chamber and impact baffle plate:

1., adopting anticorrosion, resistant to elevated temperatures construction material to build by laying bricks or stones forms.Inside installs impact baffle plate, water injector and the ash removal pool that has angle additional.Can calculate the angle and the size of impact baffle plate according to the size of expansion chamber.Structure at the bottom of the expansion chamber pond: be designed to trapezoidal gradient (see figure 3) at the bottom of the pond of expansion chamber, build in outside the expansion chamber, the flue dust that sinks under the water, focuses in the deashing groove (dust stratification pond) at the bottom of sliding pond along the gradient under the effect of gravity, negative pressure.Be convenient to collection ash and deashing (seeing Fig. 2, Fig. 3).The concrete size of expansion chamber can be by following two derivations of equation:

Formula one: W=Q ÷ (H μ o)=Q ÷ (L μ g)

Formula two: Stokes (Stokes) formula: μ g=[d 2s-ρ) g] ÷ (18 μ)

2., water injector is the core apparatus of expansion chamber, can spurt the spherical fog of 3 rice diameters, the water droplet on the whole section is evenly distributed, no dead angle.Can adapt to high temperature, high humidity, high resistivity, inflammable, explosive dusty gas.The alkalescence water spray can absorb the SO in the flue gas better 2And NO X, kill two birds with one stone.

3., at the place, several dead angles of expansion chamber baffle plate, water injector has been installed equally, open the water spray valve, just can directly clear up the cigarette ash at dead angle, make it to flow into the water seal settling tank, need not manually enter cleaning.

4., install the water seal (see figure 1) additional: install the effect of water seal additional: good sealing effect, sound insulation, winter protection, can bursting by freezing.Water spray sound, flue gas sound, dash ash sound and all can eliminate at this; Water seal has guaranteed that grit is stored in the bottom, is not brought into flue once more by flue gas.Not blowing out just can deashing.

5., the selection of deashing groove position: consider staff's convenience, select the deashing groove to build the outer (see figure 1) of expansion chamber in,, under the situation of not stopping boiler, also can clear up flue dust because of the seal of water seal.

6., the flow direction and the processing of sewage: can directly handle deashing water in the deashing groove, the clear water after the processing can continue to use.

2, the setting of net grid

When flue gas sprays into the pond from flue, because speed is very high, direct and water body bumps against, because the suction-operated of inertia and water can make flyash, flue dust and sulfur dioxide directly enter in the water body, because the mitigation of water body, the flow velocity that flue gas rises reduces, above the water surface, install twill plate and spray equipment additional, can sedimentation granule flyash and flue dust, and remaining sulfur dioxide of absorbed portion and nitrogen oxide.Increase twill plate and spray equipment, can prevent that less flyash and flue dust that flue gas carries from entering flue once more from water surface uphill process; Twill plate and spray equipment form one, can reduce the temperature of flue gas, can make flue dust directly enter the liquid phase main body, reach real dedusting purpose.

3, maintenance:

In order to overhaul conveniently, the upper cover plate in water-bath spray net grid pond can be taken apart, and the maintainer can conveniently be entered.In order to guarantee the sealing of water-bath spray pond, inlet must not at will be opened.

1., the structure at the bottom of the expansion chamber pond: be designed to trapezoidal gradient (see figure 1) at the bottom of the pond of expansion chamber, build in outside the expansion chamber, the flue dust that sinks under the water at the bottom of the gradient slides to the pond, focuses in the deashing groove (dust stratification pond) under the effect of gravity, negative pressure.

2., the selection of deashing groove position: consider staff's convenience, select the deashing groove to build the outer (see figure 1) of expansion chamber in,, under the situation of not stopping boiler, also can clear up flue dust because of the seal of water seal.

3., the flow direction and the processing of sewage: can directly add lime treatment deashing water in the deashing groove, the clear water after the processing overflows to water circulation tank, continues to use for spray.

The utility model carries out according to following technology:

Flue gas spray 2

↓????????????????????????↓

Air-introduced machine → sea water bath → impact baffle plate → net grid → chimney → clean gas discharging

↑???????????????↓

Spray 1 ← water circulation tank ← dust stratification pond ← lime

Soot emissions

The purpose of spray 1 The purpose of spray 2 Absorption portion SO 2And NO X Absorption portion SO once more 2And NO X The dirt ash that pile up at flushing baffle plate dead angle The dirt ash of flushing net grid surface sediment

Spray 1 is taken from water circulation tank with the water of spray 2.

The utility model has mainly solved the problem of following several respects:

1. increase the scope of application of dedusting, reduced energy consumption.Ash-laden gas applicable to high temperature, high resistivity, high humidity.

2. strengthened SO 2And NO XAbsorbability.The alkaline water that spray adopts can absorb the SO in the flue gas 2And NO X, improve the ventilated environment of blower fan, flue, reduce corrosion, prolong the life-span of flue and blower fan.

3. solved the susceptible to plugging problem of nozzle.Used do not have stop up, high temperature resistant, be the ceramic sprayer unit of corrosion, it is durable in use to be in operation, spraying evenly, diameter is big, the efficiency of dust collection height saved maintenance cost.

4. solved the big problem of fund input.This deduster is simple in structure, all device facilities are all by own design, small investment, instant effect, is convenient to construct, and need not strengthen the power of air-introduced machine, just can use.

5. solved noise, flue dust exceeds standard and antifreeze problem.Water seal in the expansion chamber is stored in the water grit and is not taken away by the flue gas secondary, and has guaranteed the airtight not unofficial biography of indoor noise, and the temperature of self is enough to suitable arctic weather in the flue.

6. adopt the dedusting of net grid, further reduced flue dust, SO 2And NO XContent.

7. solved the flue dust problem that exceeds standard.

The utility model and current similar technological synthesis are relatively adopted dust removing device of water-bath spraying net barrier, have solved the flue dust problem that exceeds standard; Water spray adopts alkaline water, reduces the acidity of water. Can absorb better the SO in the flue gas2With NOX, improved the ventilated environment of blower fan, flue, reduced boiler flue corrosion, prolonged the life-span of flue; Used without obstruction, high temperature resistant, corrosion-resistant, durable in use, the ceramic sprayer unit even, diameter large (3 meters) of spraying, can save maintenance cost; Good sealing effect, sound insulation, winter protection can bursting by freezing. Spraying sound, flue gas sound, punching ash sound all can be eliminated at this; Water seal has guaranteed that grit is stored in the bottom, is not taken away again by flue gas.

This dust arrester is applied widely, and efficiency of dust collection is higher than dry collector. Simple in structure, constructability. The water-bath spraying net barrier dedusting technology not only can reduce smoke dust discharge concentration, make flue dust again do not brought into flue by flue gas, and absorb sulfur dioxide and nitrogen oxide, achieves many things at one stroke.

The ash-laden gas of the applicable high temperature of this dust arrester, high resistivity, high humidity, efficiency of dust collection is higher than dry collector. Simple in structure, small investment, power consumption are low, instant effect, constructability. The water-bath spraying net barrier dedusting technology not only can reduce soot emissions, make flue dust be stored in the bottom, is not again brought into flue by flue gas, and sulfur dioxide absorption and nitrogen oxide, achieves many things at one stroke.

Claims (4)

1, water-bath spray net grid dust arrester, has water-bath chamber (3), it is characterized in that in water-bath chamber (3), being equipped with the air-introduced machine pipe (1) of introducing the desire Purge gas, spray head (9) is housed in water-bath chamber (3), an other side is provided with dust stratification pond (4) in water-bath chamber (3), on the exhanst gas outlet between water-bath chamber (3) and dust stratification pond (4) screen pack grid (10) are housed, screen pack grid (10) top is water inlet pipe (8) and blast pipe (7).
2, water-bath spray net grid dust arrester according to claim 1 is characterized in that being placed with inclined-plane tool impact baffle plate (2) in water-bath chamber (3) bottom.
3, water-bath spray net grid dust arrester according to claim 2 is characterized in that at the place, dead angle of impact baffle plate (2) spray head (9) being installed.
4, water-bath spray net grid dust arrester according to claim 1 is characterized in that also having expansion chamber (11) in water-bath chamber (3), and dust stratification pond (4) are positioned at expansion chamber (11) outside, and overflow valve (5) and overfall (6) are housed on dust stratification pond (4).
CNU2008202223061U 2008-10-29 2008-10-29 Dust removing device of water-bath spraying net barrier CN201291108Y (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102371102A (en) * 2010-08-07 2012-03-14 李新明 Energy-saving type desulfurization and de-dusting device
CN103322835A (en) * 2013-07-15 2013-09-25 绍兴市明烽节能科技有限公司 Differential-type exchanger
CN103349880A (en) * 2012-08-14 2013-10-16 卢国孝 Boiler flue dust water purifying apparatus and purifying method thereof
CN103768883A (en) * 2014-01-10 2014-05-07 汤国庆 Water-washing air purifier
CN104028074A (en) * 2014-06-29 2014-09-10 柳州美纳机械有限公司 Dust removing device for welding station
CN104492217A (en) * 2014-12-29 2015-04-08 杭州恒丰家具有限公司 Dust collecting device
CN104548846A (en) * 2014-12-30 2015-04-29 福建卫东实业股份有限公司 Multipurpose wet electrostatic precipitator
CN105771575A (en) * 2016-03-24 2016-07-20 上海蓝科石化环保科技股份有限公司 Integrated dry type purification method and system of flue gas multi-component pollutants
CN105771483A (en) * 2016-03-17 2016-07-20 华南农业大学 Wet type dust removing system
CN106237774A (en) * 2016-08-29 2016-12-21 河南心连心化肥有限公司 A kind of honeycomb rapids ball urea dust recovery device and recovery method thereof

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102371102A (en) * 2010-08-07 2012-03-14 李新明 Energy-saving type desulfurization and de-dusting device
CN103349880A (en) * 2012-08-14 2013-10-16 卢国孝 Boiler flue dust water purifying apparatus and purifying method thereof
CN103322835A (en) * 2013-07-15 2013-09-25 绍兴市明烽节能科技有限公司 Differential-type exchanger
CN103768883A (en) * 2014-01-10 2014-05-07 汤国庆 Water-washing air purifier
CN103768883B (en) * 2014-01-10 2017-01-04 汤国庆 A kind of rinsing type air purifier
CN104028074A (en) * 2014-06-29 2014-09-10 柳州美纳机械有限公司 Dust removing device for welding station
CN104492217A (en) * 2014-12-29 2015-04-08 杭州恒丰家具有限公司 Dust collecting device
CN104548846A (en) * 2014-12-30 2015-04-29 福建卫东实业股份有限公司 Multipurpose wet electrostatic precipitator
CN104548846B (en) * 2014-12-30 2018-05-18 福建卫东实业股份有限公司 A kind of multipurpose wet electric dust collector
CN105771483A (en) * 2016-03-17 2016-07-20 华南农业大学 Wet type dust removing system
CN105771575A (en) * 2016-03-24 2016-07-20 上海蓝科石化环保科技股份有限公司 Integrated dry type purification method and system of flue gas multi-component pollutants
CN105771575B (en) * 2016-03-24 2018-10-30 上海蓝科石化环保科技股份有限公司 A kind of flue gas multicomponent pollutant integration dry type purification method and system
CN106237774A (en) * 2016-08-29 2016-12-21 河南心连心化肥有限公司 A kind of honeycomb rapids ball urea dust recovery device and recovery method thereof

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090819

Termination date: 20111029

C17 Cessation of patent right