CN1123734C - System for cleaning fume of furnace or kiln - Google Patents
System for cleaning fume of furnace or kiln Download PDFInfo
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- CN1123734C CN1123734C CN 01107752 CN01107752A CN1123734C CN 1123734 C CN1123734 C CN 1123734C CN 01107752 CN01107752 CN 01107752 CN 01107752 A CN01107752 A CN 01107752A CN 1123734 C CN1123734 C CN 1123734C
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Abstract
The present invention relates to a system for cleaning fume of a furnace or a kiln, which comprises a smoke gas cooling device, a smoke gas inducing draught and pressurizing device, a smoke gas washing and absorbing device and a washing liquid discharge and processing device. The devices are connected by pipes, and valves are arranged on the pipes. Communication bypasses which are formed from pipes are arranged between a medium inlet of each dynamic force facility and an exit port in the system. The system for cleaning fume of a furnace or a kiln of the present invention has the advantages of scientific and reasonable design, good purification effect and low purification cost. The present invention is especially suitable for the normal and stable operation of furnaces and kilns, and can ensure the industrial regular production. The requirement of fume purification processing by obeying to the stable operation conditions of furnaces and kilns is realized, and the present invention is easy for industrial implementation and popularization.
Description
The present invention relates to a kind of stove, kiln system for cleaning fume, belong to environmental protection facility.
Industrial Boiler, kiln, stove are that industrial enterprise normally moves essential important component.But its smoke pollution problem is a great problem that need to solve always, the flue dust in the flue gas, sulfide etc. are to the pollution of environment and the destruction of ecological environment, arrived must solution degree.Also existing many reports of existing flue gas purifying method, but effect is not ideal, what have can only dedusting, and the pollution problem that can not effectively solve black smoke and sulfide; The energy sulphur removal that has, but can not solve the flue dust problem; Or the like, purified treatment cost height also is one of difficult problem wherein, even more serious is control techniques can't be supporting with stove, kiln, the enforcement of control techniques has hindered the normal operation of stove, kiln, destroyed the normal operating condition of stove, kiln, as upset pressure in stove, the kiln, temperature, thermograde, airflow state etc., had a strong impact on production.
The object of the present invention is to provide a kind of stove, kiln system for cleaning fume that can cooperate stove, the normal operation of kiln, good purification, and can obtain byproduct, reduce purifying cost.
Stove of the present invention, kiln system for cleaning fume comprise flue gas cool-down device, flue gas air inducing pressue device, flue gas washing absorption plant and cleaning solution discharging processing device, are connected successively by pipeline between each device, and pipeline is provided with valve, wherein:
The flue gas cool-down device is cold medium heat exchanger, establishes the connection bypass that is formed by pipeline between the medium inlet of cold medium power cycle pump and outlet;
Flue gas air inducing pressue device is a blower fan apparatus, establishes the connection bypass that is formed by pipeline between the suction inlet of blower fan and delivery outlet;
The flue gas washing absorption plant is the washing tourie, gas approach and outlet, the import of washing absorption liquid and outlet are arranged on the washing tank, the bottom of washing tank is provided with the cleaning solution floss hole, be connected with slush pump on the discharge pipe of connection cleaning solution floss hole, establish the connection bypass that forms by pipeline between the cleaning solution entrance and exit of slush pump.
System for cleaning fume of the present invention makes flue gas carry out cooling and pressurized treatments before washing absorbs, and flue gas is washed preferably absorb processing, improves clean-up effect.Be equipped with the connection bypass of " short circuit " on each power facility in the system, both can guarantee to move power, can regulate voluntarily again, also but self carries out short-circuit cycle, can not have influence on operating condition in stove, the kiln with the operation that guarantees cleaning treatment system, thereby guarantee the normal stable operation of stove, kiln.
In order to guarantee that the flue gas that enters air-introduced machine is higher than dew-point temperature, the flue-gas temperature that enters washing tank again is lower, then can be equipped with the secondary smoke heat sink between flue gas blower unit and flue gas washing absorption plant.The most water that adopt of cold medium in the flue gas cool-down device, each cooling heat exchanger can be one group of heat exchange, also can be the multistage cooling logotype of multi-group heat exchanger series, parallel or connection in series-parallel, heat exchange mode can be the shell and tube heat exchange, also can be other heat exchange mode.The heat that heat exchange gets can effectively utilize heat by radiator, and cold medium can recycle.
In the present invention:
Slush pump exports an end has a pipeline to be communicated with the suspension impact tube that is inserted to the washing tank bottom, can realize that the part cleaning solution is back in the washing tank, and impact tube impacts the washing tank bottom, and sediment is suspended, and is easy to the discharge of cleaning solution.
The slush pump outlet is connected with filter, oil water separator in turn, and filter can separate the flue dust sediment to be removed, and oil water separator leaves cleaning solution and oil content, and so-called oil promptly is some hydrocarbons of combustion residue or generation, and is lighter than water.Oil water separator of the present invention is the container of a band dividing plate, and dividing plate is divided into water separation chamber and oil separation chamber with container, and two separation chambers communicate in the bottom.Because the proportion of oil is little, the liquid level of oil separation chamber will be higher than the liquid level of water separation chamber, and oil overflows from the spill valve on oil separation chamber top, and cleaning solution is discharged from the floss hole of water separation chamber.For cleaning solution being obtained recycle, reduce the purified treatment cost, can with the water separation chamber of oil water separator with in and container be communicated with, in be communicated with the condensing crystallizing separator again with container, make cleaning solution obtain Crystallization Separation, obtain byproduct at the condensing crystallizing separator.
Be provided with flue gas distributor and cleaning solution shower nozzle in the washing tank, flue gas can carry out the immersion washing in the cleaning solution in washing tank, also can carry out spray washing by the cleaning solution shower nozzle, or both and usefulness.Can set up other corresponding auxiliary equipment on the washing tank, as water inlet, advance the alkali lye mouth, advance the neutralizer mouth, liquid level gauge, thermometer, Pressure gauge, peep hole, cleaning solution thief hole or the like, be convenient to operation.
Be provided with the central water supply device in the system of the present invention, each water pipeline all connects the central water supply device, be provided with water tank in the central water supply device, be provided with the water switch of control water tank middle water level in the water tank, connect dynamic pump on the supply channel of water tank, the suction inlet of kinetic pump with export between establish by what pipeline formed and be communicated with bypass.The water tank of band water switch had both guaranteed that water can satisfy supply, had avoided the logical water source, upper reaches that pollutes of water in cleaning solution and the last overflow pipe again.Establish by what pipeline formed between the suction inlet of kinetic pump and outlet and be communicated with bypass, can satisfy the power needs, conveniently adjusted again flow avoids influencing stove, the interior operating condition of kiln.
Also be provided with alkali lye preparation and feeding mechanism in the system of the present invention, the alkali lye supply line that is communicated with alkali lye preparation container is provided with kinetic pump, the suction inlet of kinetic pump with export between establish by what pipeline formed and be communicated with bypass.In being provided with and container, in and container is communicated with water separation chamber, alkali lye preparation container, the washing tank of oil water separator respectively, the neutralizer supply line is provided with kinetic pump, the suction inlet of kinetic pump with export between establish by what pipeline formed and be communicated with bypass.To safeguard whole harmony, guarantee that stove, kiln are stable.
After the gas cleaning, generally contain a certain amount of moisture, therefore, connect a drier, be used for drying and dewater through the purification exhanst gas outlet of washing tank.
The present invention is further illustrated below in conjunction with the embodiment accompanying drawing.
Fig. 1, system for cleaning fume overall schematic of the present invention.
Fig. 2, central water supply device schematic diagram.
Fig. 3, flue gas cool-down device schematic diagram.
Fig. 4, flue gas air inducing pressue device schematic diagram.
Fig. 5, washing tank schematic diagram.
Fig. 6, cleaning solution discharging processing device schematic diagram.
Fig. 7, cleaning solution neutralisation treatment device schematic diagram.
Fig. 8, alkali lye preparation feeding mechanism schematic diagram.
Among the figure: 1 water supply installation, 2 stoves or kiln, 3,5 flue gas cool-down devices, 4 air inducing pressue devices, 6 purify the flue gas dump valve, 7 cleaning solution shower nozzles, 8 washing tanks, 9 smoke distribution pipes, 10 impact tubes, 11 cleaning solution outlets, 12 slush pumps, 13 filters, 14 cleaning solution neutralisation treatment devices, 15 alkali lye preparation feeding mechanism, 16 water tanks, 17 water floats, 18 water pump bypasses, 19 water pumps, 20 Pressure gauges, 21 gas approach, 22 radiators, 23 cooling heat exchangers, 24 exhanst gas outlets, 25 water (cold medium) pump bypass, 26 water pumps, 27 blower fan bypasses, 28 blower fans, 29 Pressure gauges, 30 peep holes, 31 Pressure gauges, 32 liquid level gauges, 33 thermometers, 34 Pressure gauges, 35 slush pump bypasses, 36 filters, 37 oily spill valves, 38 oil water separators, 39 oil separation chambers, 40 dividing plates, 41 water separation chambers, 42 washings delivery pipes, in 43 and container, 44 washings inlet tubes, 45 agitators, 46 alkali lye inlet tubes, 47 Pressure gauges, 48 kinetic pump bypasses, 49 kinetic pumps, 50 condensing crystallizing separators, 51 alkali liquor container, 52 aqueducts, 53 agitators, 54 kinetic pump bypasses, 55 Pressure gauges, 56 kinetic pumps.
As shown in the figure, stove of the present invention, kiln system for cleaning fume comprise flue gas cool-down device 3,5; Flue gas air inducing pressue device 4; Flue gas washing absorption plant 8 and cleaning solution discharging processing device are connected successively by pipeline between each device, and pipeline is provided with valve, wherein:
Flue gas cool-down device 3,5 is water (cold medium) heat exchanger, establishes the connection bypass 25 that is formed by pipeline between the medium inlet of water pump 26 and outlet;
Flue gas air inducing pressue device 4 is a blower fan apparatus, establishes the connection bypass 27 that is formed by pipeline between the suction inlet of blower fan 28 and delivery outlet;
The flue gas washing absorption plant is washing tourie 8, gas approach and outlet, the import of washing absorption liquid and outlet are arranged on the washing tank 8, the bottom of washing tank is provided with cleaning solution floss hole 11, be connected with slush pump 12 on the discharge pipe of connection cleaning solution floss hole, establish the connection bypass 35 that forms by pipeline between the cleaning solution entrance and exit of slush pump 12.The flue gas cool-down device 5 that flue gas blower unit 4 and flue gas washing jar are 8 is the secondary smoke heat sink.
Operation conditions of the present invention is: stove or kiln discharged flue gas are through 3 coolings (temperature is higher than dew-point temperature) of flue gas cool-down device, through blower fan 28 pressurizations, and then carry out reducing temperature twice through flue gas cool-down device 5, flue-gas temperature is reduced under the water critical temperature under the air pressure of washing tank.Flue gas after the cooling pressurization fed in the washing tourie 8 washs, can carry out the immersion washing, also can carry out spray washing by the cleaning solution in the washing tank, but also both and with carrying out.Flue-gas temperature is low, pressure is big, has strengthened clean result.Temperature and pressure in the washing tank, the temperature and pressure of flue gas are wanted the phase coadaptation, should consider to wash preferably assimilation effect, consider whether to influence the operating condition in stove or the kiln again, be through repeatedly debugging, to determine optimization control parameter.Cleaning solution can be selected targetedly according to the chemical composition of flue gas, can be water, alkali lye or other neutralizer or the like.Flue gas after being purified is carried out drying again and is handled the back discharge behind flue gas dump valve 6.
Cleaning solution is discharged from the outlet 11 of washing tank 8 bottoms, and a part of cleaning solution is back to the impact tube of washing tank, is used for agitator treating liquid, and sediments such as precipitation, precipitum are suspended, and is convenient to discharge; Most of cleaning solution need carry out post processing: filter flue dust, the sediment that flue gas is removed in the back through filter 36, filtrate is separated through oil water separator 38, hydrocarbon (i.e. oil) from oily spill valve 37 is discharged combustion residue and burnt and generate carries out neutralisation treatment from water separation chamber 41 causes washings by washings delivery pipe 42 He in the container 43.In and raffinate can be used as cleaning solution and cause in the washing tank, major part can cause in the condensing crystallizing separator, carries out Crystallization Separation, obtains byproduct, as calcium sulfite, vulcanized sodium, ammonium hydrogencarbonate, bisulfite ammonia or the like.Obtaining of byproduct not only thoroughly solved pollution problem, also makes the gas cleaning cost obtain reducing greatly.
In the system for cleaning fume of the present invention, between each device and all communicate between each device and stove, kiln, therefore, each operation conditions of installing all may have influence on the operating condition of stove, kiln, as the fluctuation of temperature, pressure etc.Be equipped with bypass on the power facility of each device, both can realize the power conveying, can break away from power facility again and carry out unpowered conveying, also can carry out controlled quentity controlled variable carries, easy to adjust, not only adapt to the purified treatment needs, but also can satisfy the adjustment needs of steady running condition in stove or the kiln, realized that gas cleaning handles the requirement of obeying stove, kiln steady running condition, be easy to industrial implementation and promote.
In the present invention, if be equipped with automatic control monitoring system,, then can realize easily accurately control improving runnability as automatic data acquisition, from motion tracking control, the automatic adjustment of frequency conversion power etc.
Operational parameter control of the present invention can draw by test adjustment in practice as the case may be.As: the main chemical compositions of flue gas is: carbon dioxide, when not firing air, sulfur dioxide, flue dust, can select water is the washing absorption liquid, and selecting limewash is that alkali lye use in neutralization, and neutralizer separates through condensing crystallizing, must byproduct: calcium sulfite.
Stove of the present invention, kiln system for cleaning fume design science are reasonable, can smoke abatement, dedusting, again can sulphur removal, and can fundamentally thoroughly remove, rather than shift, good purification can obtain byproduct again, and it is low to purify cost, especially can adjust, cooperate, adapt to the normal stable operation of stove, kiln, guarantee industrial ordinary production, realized that gas cleaning handles the requirement of obeying stove, kiln steady running condition, be easy to industrial implementation and promote.
Claims (10)
1, a kind of stove, kiln system for cleaning fume is characterized in that comprising flue gas cool-down device, flue gas air inducing pressue device, flue gas washing absorption plant and cleaning solution discharging processing device, are connected successively by pipeline between each device, and pipeline is provided with valve, wherein:
The flue gas cool-down device is cold medium heat exchanger, establishes the connection bypass that is formed by pipeline between the medium inlet of cold medium power cycle pump and outlet;
Flue gas air inducing pressue device is a blower fan apparatus, establishes the connection bypass that is formed by pipeline between the suction inlet of blower fan and delivery outlet;
The flue gas washing absorption plant is the washing tourie, gas approach and outlet, the import of washing absorption liquid and outlet are arranged on the washing tank, the bottom of washing tank is provided with the cleaning solution floss hole, be connected with slush pump on the discharge pipe of connection cleaning solution floss hole, establish the connection bypass that forms by pipeline between the cleaning solution entrance and exit of slush pump.
2, system for cleaning fume according to claim 1 is characterized in that being equipped with the secondary smoke heat sink between flue gas blower unit and flue gas washing absorption plant.
3, system for cleaning fume according to claim 1 and 2 is characterized in that slush pump exports an end and has a pipeline to be communicated with the suspension impact tube that is inserted to the washing tank bottom.
4, system for cleaning fume according to claim 3 is characterized in that the slush pump outlet is connected with filter, oil water separator in turn.
5, system for cleaning fume according to claim 4, the water separation chamber that it is characterized in that oil water separator with in and container is communicated with, in be communicated with the condensing crystallizing separator again with container.
6, system for cleaning fume according to claim 1 is characterized in that being provided with in the washing tank flue gas distributor and cleaning solution shower nozzle.
7, system for cleaning fume according to claim 1, it is characterized in that being provided with the central water supply device, each water pipeline all connects the central water supply device, be provided with water tank in the central water supply device, be provided with the water switch of control water tank middle water level in the water tank, connect dynamic pump on the supply channel of water tank, the suction inlet of kinetic pump with export between establish by what pipeline formed and be communicated with bypass.
8, system for cleaning fume according to claim 1, it is characterized in that being provided with alkali lye preparation and feeding mechanism, the alkali lye supply line that is communicated with alkali lye preparation container is provided with kinetic pump, the suction inlet of kinetic pump with export between establish by what pipeline formed and be communicated with bypass.
9, system for cleaning fume according to claim 1, in it is characterized in that being provided with and container, in and container be communicated with the water separation chamber of oil water separator, alkali lye preparation container, washing tank respectively, the neutralizer supply line is provided with kinetic pump, establishes by what pipeline formed between the suction inlet of kinetic pump and outlet to be communicated with bypass.
10, system for cleaning fume according to claim 1 is characterized in that the exhanst gas outlet of washing tank connects a drier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01107752 CN1123734C (en) | 2001-01-17 | 2001-01-17 | System for cleaning fume of furnace or kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01107752 CN1123734C (en) | 2001-01-17 | 2001-01-17 | System for cleaning fume of furnace or kiln |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1366159A CN1366159A (en) | 2002-08-28 |
| CN1123734C true CN1123734C (en) | 2003-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01107752 Expired - Fee Related CN1123734C (en) | 2001-01-17 | 2001-01-17 | System for cleaning fume of furnace or kiln |
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| CN (1) | CN1123734C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844021A (en) * | 2010-01-15 | 2010-09-29 | 梁鑫 | New process for closed absorbing, cooling, desulfurizing and purifying high-temperature waste gas |
| CN102626587B (en) * | 2012-04-10 | 2013-12-11 | 常熟市信立磁业有限公司 | Waste gas treatment device of electronic kiln |
| CN107308753A (en) * | 2016-04-26 | 2017-11-03 | 浙江东氟塑料科技有限公司 | A kind of flue gas condensing Water Sproading and dust removal method |
| CN107314390A (en) * | 2016-04-26 | 2017-11-03 | 浙江东氟塑料科技有限公司 | A kind of nonmetallic condensed flue gas processing equipment |
| CN108543632B (en) * | 2018-05-15 | 2020-04-07 | 马鞍山科宇环境工程有限公司 | Wet type cyclone dust collector capable of recycling washing liquid |
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2001
- 2001-01-17 CN CN 01107752 patent/CN1123734C/en not_active Expired - Fee Related
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| CN1366159A (en) | 2002-08-28 |
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