CN206746262U

CN206746262U - A kind of sleet combined highly effective removes smoke the processing system of middle haze thing

Info

Publication number: CN206746262U
Application number: CN201720433737.1U
Authority: CN
Inventors: 陈国霖
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-04-24
Filing date: 2017-04-24
Publication date: 2017-12-15
Anticipated expiration: 2027-04-24

Abstract

A kind of sleet combined highly effective removes smoke the processing system of middle haze thing, including setting gradually denitration humidification cooling device and haze thing adsorption system along the direct of travel of flue gas, the haze thing adsorption system includes square short chimney, the snowmaker of snowflake and the filter by the water collection processing in square short chimney is provided into square short chimney, the outlet pipeline of the filter is connected with the supply channel of snowmaker, and water pump and deep freeze refrigerator are additionally provided with the supply channel of snowmaker.The method that the utility model uses artificial sleet, moisture condensation is made full use of to adsorb feature into the porous for condensing impurity and snowflake during sleet, effectively remove the haze thing in flue gas, whole system low cost, energy consumption are small, operating cost is little, the clearance of haze thing is high, can effectively solve the problems, such as that current wet desulfurizing process is brought.Meanwhile square short chimney substantially reduces relative to existing chimney height, is easy to supervise, manages, it can effectively reduce the row of stealing including night and put phenomenon steathily.

Description

A kind of sleet combined highly effective removes smoke the processing system of middle haze thing

It the utility model is related to a kind of sleet combined highly effective to remove smoke the processing system of middle haze thing, especially to through wet The system that haze thing in flue gas after method sulfur removal technology is handled.

Background technology

With the continuous development of industry, in industrial production, the dosage of various fossil fuels and biomass fuel is increasingly More, its flue gas discharged causes the also increasingly severe of air pollution degree in recent years, and haze occurs in national large area, haze Occur not only bringing many inconvenience to people's trip, more seriously damage the health of people.

At present, although most enterprises are assembled with flue gas desulphurization system, it more than 90% takes off using wet method Sulphur, i.e., by spraying limestone slurry water smoke and sulfur dioxide in flue gas molecule contacts, reach absorption and the purpose collected.Lime stone Slurry droplet contains a large amount of moisture content, and humidity increases in the flue gas for causing to discharge after desulfurization, and turning into wet flue gas, (humidity is normal air 10 times).The duff ash of residual, ammonium sulfate, ammonium nitrate, calcium sulfate, calcium nitrate fine grained etc. are also carried in wet flue gas simultaneously.Wet cigarette Gas is arranged to aerial, directly forms haze in vaporific.IFCE (IFCE) pays close attention to wet desulphurization and brought always Influence of the side effect to haze, root it is reported that although the flue gas major part sulfur dioxide after wet desulfurizing process is removed, But the grey and secondary ammonium sulfate of the duff that residual is carried in wet flue gas, ammonium nitrate, sulfuric acid fine grained etc., currently without monitoring.

What is more, and these negatively charged wet flue gas are in quiet steady air, the waste gas of adsorption plant and motor vehicle emission, warp A series of physical chemical reaction is crossed, the new secondary aerosol species PM2.5 of flood tide is produced, causes air quality drastically to deteriorate, air energy Degree of opinion is greatly lowered, and forms severe haze.After 2012, the main reason for the unexpected large area outburst of Chinese haze

It is estimated that the vapor with these pollutants that the whole nation is discharged into by wet desulphurization in air reaches 200,000 Ton hour, these vapor carry negative electrical charge, and meeting secondary pollution in an atmosphere, (XOX, O3, OH, PM2.5 etc., are resulted from Other industrial discharges and vehicle exhaust), absorption occurs and forms bigger particulate, while oxidizing capacity strengthens under effect of sunlight, Also the notable growing amount of secondary aerosol species is increased, forms the pollutants such as more serious aerosol.

These pollutants play large-scale fermentation just as medicine efficacy enhancing ingredient to air.This chain reaction, quiet Under steady weather condition, air quality is caused drastically to deteriorate, atmospheric visibility is greatly lowered, PM2.5 lasting " quick-fried table ", forms weight Spend haze.Flue-gas temperature after some wet desulphurizations is at 30 ~ 50 DEG C or so.Current domestic exhaust gas temperature and humidity is not detailed Regulation, power plant because energy-conservation and preventing equipment from blocking, it is large quantities of it is new on power plant be no longer required for installation and install smoke re-heater additional, And the power plant installed then starts extensive remove and installs smoke re-heater additional.

It is wet according to the latest survey in Nankai University's national environmental protection urban air Particulate Pollution prevention emphasis laboratory Method desulfurization often takes off 100 tons of sulphur, has 14 tons of fine particles to be excluded by wet flue gas.Current national sulfur dioxide (SO2) emissions total amount is annual about 20000000 tons, reckoning is got off, and the wet desulphurization particulate matter directly newly-increased 2,520,000 tons to air, far surpasses any one industrial trade Direct discharge capacity.

Therefore, many measures have been formulated in the improvement and preventing and treating of Environmental pollution, laws and regulations are also all strict with phase Pass enterprise, factory need to configure haze thing cancellation element, but many local effects and unobvious, main cause are:Using existing Haze thing in processing unit, such as electrostatic precipitator, filter bag type deduster, wet electrical dust precipitator removing flue gas, its correlation are set Standby not only cost of investment is high, and operation and maintenance cost is even more high, and in order to reduce cost, its processing unit has daytime for many enterprises Open and close at night or open the phenomenon usually closed when checking.Therefore, no matter the measure for rationally effectively eliminating haze thing in flue gas is found Be it is current or it is following be all there is an urgent need to.

Utility model content

The utility model solves above-mentioned technical problem, there is provided a kind of low cost, energy consumption are small, haze thing removes effect in flue gas The good sleet combined highly effective of fruit removes smoke the processing system of middle haze thing.

In order to solve the above-mentioned technical problem, the technical solution of the utility model is：A kind of sleet combined highly effective removes smoke The processing system of middle haze thing, including set gradually denitration humidification cooling device and the absorption of haze thing along the direct of travel of flue gas System, the haze thing adsorption system include square short chimney, into square short chimney provide snowflake snowmaker and will be square Water in short chimney collects the filter of processing, and the outlet pipeline of the filter is connected with the supply channel of snowmaker, artificial snow-making Water pump and deep freeze refrigerator are additionally provided with the supply channel of machine, the flue gas after wet desulfurizing process enters denitration humidification cooling dress Humidification, cooling are put to enter square short chimney after normal temperature saturation wet flue gas, while snowmaker manufactures snowflake into square short chimney, Haze thing in snowflake absorption normal temperature saturation wet flue gas, while the heat in flue gas is absorbed as the rain containing a large amount of haze things Water, also become the rainwater containing a large amount of haze things after moisture in flue gas is cooled, two parts rainwater falls on square short chimney bottom Portion forms low-temperature circulating water, and the clean flue gas after snowflake adsorbs then is discharged from square short chimney side, square short chimney bottom Low-temperature circulating water subsequently enter filter filtration treatment, the low-temperature circulating water after haze thing is processed enters the water supply of snowmaker Pipeline is simultaneously again introduced into snowmaker recycling by water pump and deep freeze refrigerator, after the haze thing filtering in low-temperature circulating water from Discharged in filter.

Further, some shower nozzles being connected with snowmaker are provided with the square short chimney, the shower nozzle layering is set, The spacing of adjacent layer is 3 meters, and the time of contact of snowflake and flue gas was more than 6 seconds in square short chimney.

Further, the width of the square short chimney is 4 ~ 6 meters, is highly 10 meters, flue gas is in square short chimney The rate of climb is 0.5 meter per second.

Further, denitration humidification cooling device is atmospheric pressure sealed fountain filling cooling tower, cooling tower inner top Provided with spray head and for collecting the filter screen mist eliminator of fog, the cooling water that spray head sprays is cooled and cleaned to flue gas, Nitrate anion thing in flue gas is dissolved in cooling water, while a part of haze thing also take away by cooled water cleaning, in cooling tower Water finally collects backwater a to water circulation system in its bottom and handled, and the supply channel of the water circulation system is connected with spray head Connect.

The method that the utility model uses artificial sleet, moisture condensation is made full use of into condensing impurity and snowflake during sleet Porous adsorbs feature, effectively removes the haze thing in flue gas, compared to the mode of haze thing in existing removing flue gas, this practicality New low cost, energy consumption are small, and operating cost is little, and the clearance of haze thing is up to 90%, can effectively solve current wet desulphurization work A series of problems that skill is brought.Meanwhile square short chimney substantially reduces relative to existing chimney height, is easy to supervise, manages, The row of stealing including night can effectively be reduced and put phenomenon steathily.

Brief description of the drawings

Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.

Fig. 1 is Tthe utility model system schematic flow sheet；

Fig. 2 is that shower nozzle is distributed schematic top plan view in the square short chimney of the utility model.

Embodiment

With reference to the accompanying drawings and detailed description, the utility model is described further.

The processing system of middle haze thing as shown in figure 1, a kind of sleet combined highly effective removes smoke, including the row along flue gas Enter direction set gradually denitration humidification cooling device and haze thing adsorption system, the haze thing adsorption system include square short cigarette Chimney, the snowmaker of snowflake and the filter by the water collection processing in square short chimney, the mistake are provided into square short chimney The outlet pipeline of filter is connected with the supply channel of snowmaker, and water pump and cryogenic freezing are additionally provided with the supply channel of snowmaker Machine,

In the present embodiment, the square short chimney is the square short chimney of conventional brick mix structure, and its height is 10 meters, width For 5 meters, width can also be determined actual flue gas flow as needed, usually 4 meters ~ 6 meters.Square short chimney of the present utility model Substantially reduced compared to existing chimney height, in addition to it can reduce input, while be also convenient for supervising, manage.

The shower nozzle for being provided with and being connected with snowmaker is layered in the present embodiment, in square short chimney, every layer sets 2 shower nozzles, One layer is set every 3 meters, the shower nozzle with layer is on the relative two side of square short chimney, and the shower nozzle of adjacent layer is then located at another On relative two side, 3 layers of 6 shower nozzle are set altogether in whole square short chimney.Snowmaker is by shower nozzle into square short chimney Spray snowflake.

In the present embodiment, the denitration humidification cooling device is atmospheric pressure sealed fountain filling cooling tower, is pushed up in cooling tower Portion is provided with spray head and the filter screen mist eliminator for collecting fog, and the cooling water that spray head sprays carries out cooling and clear to flue gas Wash, the nitrate anion thing in flue gas is dissolved in cooling water, while a part of haze thing also take away by cooled water cleaning, in cooling tower Water finally collect backwater a to water circulation system in its bottom and handle, supply channel and the spray head phase of the water circulation system Connection.

Specifically, flue gas desulfurization after wet desulfurizing process and cooling to about 50 degree of -130 degree, subsequent flue gas enters Atmospheric pressure sealed fountain filling cooling tower, water circulation system provide cooling water to spray head, and spray head sprays fog and flue gas is entered Row cools down and primary wash, and the nitrate anion thing in flue gas is dissolved in cooling water, while also cooled water is clear for a part of haze thing Wash and take away.Flue gas cool-down after cooling washs the fog after flue gas and is then warming up to about 60 degree to about 35 degree, will by filter screen mist eliminator Fog is collected and finally collected to the water circulation system processing and cooling of full factory, forms circulation.

Saturation wet flue gas after cooling tower is handled is directly entered the bottom of square short chimney, and wet flue gas is in square short chimney Inside slowly rise, the rate of climb is 0.5 meter per second, and snowmaker work simultaneously sprays snowflake, snow by the shower nozzle in square short chimney Flower slowly lands in square short chimney, and flue gas and snowflake fully contact mixing, and its time of contact is more because of snowflake more than 6 seconds Permeability feature can effectively adsorb the haze thing in flue gas.Meanwhile snowflake of the vapor in saturation wet flue gas because touching low temperature Also water is condensed into, and carries substantial amounts of haze thing and falls to square short chimney bottom to form low-temperature circulating water.Flue gas is removing haze Thing and humidity are arranged to air after reducing from square short chimney side, fall on the low temperature that square short chimney bottom carries a large amount of haze things For recirculated water by the bottom collection of square short chimney to filter filtration treatment, the low-temperature circulating water after processing enters the confession of snowmaker Water lines and process water pump and deep freeze refrigerator are again introduced into snowmaker and recycled, from mistake after the haze thing filtering in recirculated water Discharged in filter.

Although specifically showing and describing the utility model with reference to preferred embodiment, those skilled in the art should This is understood, is not departing from the spirit and scope of the present utility model that appended claims are limited, in form and details On the utility model is made a variety of changes, be the scope of protection of the utility model.

Claims

The processing system of middle haze thing 1. a kind of sleet combined highly effective removes smoke, it is characterised in that：Including the row along flue gas Enter denitration humidification cooling device and the haze thing adsorption system that direction is set gradually, the haze thing adsorption system is including square short Chimney, provide the snowmaker of snowflake into square short chimney and the water in square short chimney is collected to the filter of processing, it is described The outlet pipeline of filter is connected with the supply channel of snowmaker, and water pump and cryogenic freezing are additionally provided with the supply channel of snowmaker Machine, the flue gas after wet desulfurizing process enter denitration humidification cooling device humidification, cooled to enter after normal temperature saturation wet flue gas Square short chimney, while snowmaker manufactures snowflake into square short chimney, snowflake adsorbs the haze thing in normal temperature saturation wet flue gas, Absorbing heat in flue gas simultaneously turns into the rainwater containing a large amount of haze things, becomes after the moisture in flue gas is cooled containing largely The rainwater of haze thing, two parts rainwater fall on square short chimney bottom and form low-temperature circulating water, the cigarette after snowflake adsorption treatment Gas is then discharged from square short chimney side, and the low-temperature circulating water of square short chimney bottom subsequently enters filter filtration treatment, is located Low-temperature circulating water after reason enters the supply channel of snowmaker and is again introduced into snowmaker circulation by water pump and deep freeze refrigerator Use, discharged after the tiny particles content filtering in low-temperature circulating water from filter.
The processing system of middle haze thing 2. a kind of sleet combined highly effective according to claim 1 removes smoke, its feature exist In：Some shower nozzles being connected with snowmaker are provided with the square short chimney, the shower nozzle layering is set, and the spacing of adjacent layer is 3m, in square short chimney the time of contact of snowflake and flue gas be more than 6s.
The processing system of middle haze thing 3. a kind of sleet combined highly effective according to claim 1 or 2 removes smoke, its feature It is：The width of the square short chimney is 4 ~ 6m, is highly 10m, and the rate of climb of the flue gas in square short chimney is 0.5m/ s。
The processing system of middle haze thing 4. a kind of sleet combined highly effective according to claim 1 removes smoke, its feature exist In：The denitration humidification cooling device is atmospheric pressure sealed fountain filling cooling tower, and cooling tower inner top is provided with spray head and use In the filter screen mist eliminator for collecting fog, the cooling water that spray head sprays is cooled and cleaned to flue gas, the nitrate anion in flue gas Thing is dissolved in cooling water, while a part of haze thing also take away by cooled water cleaning, and the water in cooling tower is finally in its bottom Collect backwater a to water circulation system to handle, the supply channel of the water circulation system is connected with spray head.