CN109999589A - A kind of coal furnace flue gas emission processing unit and flue gas treating process - Google Patents
A kind of coal furnace flue gas emission processing unit and flue gas treating process Download PDFInfo
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- CN109999589A CN109999589A CN201910438179.1A CN201910438179A CN109999589A CN 109999589 A CN109999589 A CN 109999589A CN 201910438179 A CN201910438179 A CN 201910438179A CN 109999589 A CN109999589 A CN 109999589A
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- flue gas
- chamber
- coal furnace
- denitrogenation
- processing unit
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/96—Regeneration, reactivation or recycling of reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2247/00—Details relating to the separation of dispersed particles from gases, air or vapours by liquid as separating agent
- B01D2247/04—Regenerating the washing fluid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/604—Hydroxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
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- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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Abstract
The present invention provides a kind of coal furnace flue gas emission processing unit and flue gas treating process, including process chamber, flue gas connecting pipe and treatment fluid connecting pipe, process chamber is built using armored concrete, and flue gas connecting pipe and treatment fluid connecting pipe are connected to process chamber；Process chamber includes the dirt pocket being sequentially communicated, desulfurization chamber, denitrogenation room and heat-exchanging chamber, flue gas connecting pipe is connected to dirt pocket, desulfurization chamber and denitrogenation room are one or more consecutive, partition is equipped between two neighboring room, treatment fluid connecting pipe includes at least dedusting liquid pipe road, doctor solution pipeline and denitrogenation liquid pipeline, and heat-exchanging chamber side is equipped with the flue being connected to chimney.Desulfurization removing nitric dedusting is combined into one by the present invention, it is possible to reduce the process and occupied area of desulfurization removing nitric dedusting can reduce the corrosion of equipment with armored concrete, while effectively reduce the discharge amount of toxic gas and waste water, and low in the pollution of the environment, cost substantially reduces.
Description
Technical field
The invention belongs to fume treatment technical fields, and in particular at a kind of coal furnace flue gas emission processing unit and flue gas
Science and engineering skill.
Background technique
As country deepens continuously to energy-saving and emission-reduction work, environmental protection standard has been continuously improved, and discharge supervision is more tight
Lattice.Institute's heat supply discharged from coal-fired boiler sulfur dioxide with a grain of salt, nitrogen oxides, particulate matter reach minimum discharge requirement (i.e. benchmark
Oxygen content under conditions of 6%, particulate matter, sulfur dioxide, discharged nitrous oxides concentration be respectively no higher than 10,35,50 milligrams/it is vertical
Square rice).In addition to this, local environmental protection administration to eliminate the coloured plume of large coal-fired power plant chimney 12 (white, blue, yellow and
Grey) pollution also proposed and be distinctly claimed.
It is required that power generation coal-burning boiler (installed wet electricity except) etc. should eliminate stone using fibre selection and other effective measures
Phenomena such as cream rain, coloured white cigarette, collects and satiates in flue gas that is, by taking relevant art to reduce flue gas emission humidity and water capacity
With vapor moisture, the discharge of the condensables particulate matter such as soluble-salt, sulfuric acid mist, organic matter in flue gas is reduced ".Using corresponding skill
Postoperative, coal-burning boiler summer (April to October) smoke temperature is not higher than 47 DEG C, and humidity of flue gas is not higher than 9.5%；Winter, (November was to secondary
March in year) for smoke temperature not higher than 45 DEG C, water capacity is not higher than 8.5%.
Existing MGGH and GGH technology is all that Mist heat recovering then uses this heat before flue gas enters desulfurizing tower
The wet flue gas after desulfurizing tower is left, and then dries flue gas, to eliminate white plume.But using (class) MGGH, GGH and directly
When heating the technology of flue gas elimination white cigarette, since desulfurizing tower exit gas temperature is higher, the total water capacity of flue gas is higher, add
Hot institute's calorific requirement is more, is equivalent to the income for consuming fume afterheat and utilizing for (class) MGGH and GGH technology.
Moreover, existing processing unit uses steel, not only equipment seriously corroded, Late reformation difficulty is big, and cost
Also high.
Summary of the invention
The purpose of the present invention is to provide a kind of coal furnace flue gas emission processing units, overcome on existing in the prior art
State technical problem.
It is another object of the present invention to provide a kind of coal furnace flue gas treating process.
Technical solution provided by the invention is as follows:
A kind of coal furnace flue gas emission processing unit, including process chamber, flue gas connecting pipe and treatment fluid connecting pipe, the place
It manages room to build using armored concrete, the flue gas connecting pipe and treatment fluid connecting pipe are connected to process chamber；
The process chamber includes the dirt pocket being sequentially communicated, desulfurization chamber, denitrogenation room and heat-exchanging chamber, the flue gas connecting pipe with
Dirt pocket connection, the desulfurization chamber and denitrogenation room be it is one or more consecutive, partition is equipped between two neighboring room, it is described
Treatment fluid connecting pipe includes at least dedusting liquid pipe road, doctor solution pipeline and denitrogenation liquid pipeline, dedusting liquid pipe road, doctor solution
Pipeline, denitrogenation liquid pipeline are connected to the spray thrower in dirt pocket, desulfurization chamber, denitrogenation ceiling portion respectively, and the heat-exchanging chamber side is set
There is the flue being connected to chimney.
The dirt pocket, desulfurization chamber, denitrogenation room and heat-exchanging chamber are set gradually in the horizontal direction, and the partition is vertically arranged
And height is less than the height of process chamber, the partition include with the upper spacer that connect at the top of processing chamber interior walls and with handle chamber interior walls
The lower clapboard of bottom connection, upper spacer and the setting of lower clapboard interval.
The dirt pocket, desulfurization chamber, denitrogenation room and heat-exchanging chamber are set gradually from bottom to up, the partition it is horizontally disposed and
Width is less than the width of process chamber, the two sides inside connection of two neighboring baffle interval and process chamber.
It further include solid waste water treatment facilities and blow-off line, the blow-off line is set to chamber bottom, the process chamber
It is connected to by blow-off line with solid waste water treatment facilities.
The heat-exchanging chamber is equipped with coil pipe, and the input end of the coil pipe is connected to air, and the outlet end of the coil pipe is connected to combustion
Coal stove.
Cooling water pipeline is communicated with by spray thrower at the top of the heat-exchanging chamber.
The solid waste water treatment facilities includes the solid waste settlement treatment pond being sequentially communicated, reverse osmosis treatment unit and clear water storage
Tank, the clear water storage tank are connected to dedusting liquid pipe road.
The heat-exchanging chamber is additionally provided with demister.
A kind of coal furnace flue gas treating process, using coal furnace flue gas emission processing unit, the flue gas of coal furnace discharge into
Enter process chamber, respectively after dirt pocket dedusting, desulfurization chamber desulfurization, the denitrogenation of denitrogenation room, then passes through the temperature of heat exchange reduction flue gas
Degree, is discharged finally by chimney.
The flue gas of the coal furnace discharge carries out pre- denitrogenation, process chamber row by reduction method and low nitrogen burning in combustion furnace
The clear water that sewage and solid waste out generates after being handled by solid waste water treatment facilities is for dedusting.
The beneficial effects of the present invention are:
This coal furnace flue gas emission processing unit provided by the invention, desulfurization removing nitric dedusting is combined into one, it is possible to reduce
The process and occupied area of desulfurization removing nitric dedusting, the corrosion of equipment can be reduced with armored concrete, while having effectively reduced poison gas
The discharge amount of body and waste water, low in the pollution of the environment, cost substantially reduces.
It is described in further details below in conjunction with attached drawing.
Detailed description of the invention
Fig. 1 is a kind of embodiment schematic diagram of coal furnace flue gas emission processing unit of the present invention；
Fig. 2 is coal furnace flue gas treating process flow chart.
In figure: 1, dirt pocket；2, desulfurization chamber；3, denitrogenation room；4, heat-exchanging chamber；5, upper spacer；6, lower clapboard；7, flue gas connects
It threads a pipe；8, treatment fluid connecting pipe；9, solid waste settlement treatment pond；10, reverse osmosis treatment unit；11, clear water storage tank；12, cigarette
Chimney；13, coal furnace.
Specific embodiment
Embodiment 1:
Present embodiments provide a kind of coal furnace flue gas emission processing unit, including process chamber, flue gas connecting pipe 7 and treatment fluid
Connecting pipe 8, the process chamber are built using armored concrete, the flue gas connecting pipe 7 and treatment fluid connecting pipe 8 with
Process chamber connection；
The process chamber includes the dirt pocket 1 being sequentially communicated, desulfurization chamber 2, denitrogenation room 3 and heat-exchanging chamber 4, the flue gas communicating pipe
Road 7 is connected to dirt pocket 1, the desulfurization chamber 2 and denitrogenation room 3 be it is one or more consecutive, be equipped between two neighboring room
Partition, the treatment fluid connecting pipe 8 include at least dedusting liquid pipe road, doctor solution pipeline and denitrogenation liquid pipeline, the dedusting liquid
Pipeline, doctor solution pipeline, denitrogenation liquid pipeline are connected to the spray thrower at dirt pocket 1, desulfurization chamber 2,3 top of denitrogenation room respectively, described
4 side of heat-exchanging chamber is equipped with the flue being connected to chimney 12.
This coal furnace flue gas emission processing unit provided by the invention, desulfurization removing nitric dedusting is combined into one, can be with
The process and occupied area for reducing desulfurization removing nitric dedusting, the corrosion of equipment can be reduced with armored concrete, made complete after fume treatment
While complete up to standard, cost is substantially reduced.
Embodiment 2:
On the basis of embodiment 1, a kind of coal furnace flue gas emission processing unit is present embodiments provided, the dirt pocket 1 takes off
Sulphur room 2, denitrogenation room 3 and heat-exchanging chamber 4 are set gradually in the horizontal direction, and the partition is vertically arranged and height is less than process chamber
Highly, the partition includes the upper spacer 5 connecting at the top of processing chamber interior walls and the lower clapboard connecting with processing chamber interior walls bottom
6, upper spacer 5 and the interval of lower clapboard 6 are arranged.
Coal furnace flue gas emission processing unit is built using armored concrete, is divided into multiple rooms, flue gas is in multiple rooms
In walk up and down, the top of each room is equipped with spray thrower, sprays the liquid of desulfurization or denitrogenation, carries out at desulfurization removing nitric to flue gas
Reason makes flue-gas temperature decline eliminate white plume in heat-exchanging chamber 4 by heat exchange.
Embodiment 3:
On the basis of embodiment 1, a kind of coal furnace flue gas emission processing unit is present embodiments provided, the dirt pocket 1 takes off
Sulphur room 2, denitrogenation room 3 and heat-exchanging chamber 4 are set gradually from bottom to up, and the partition is horizontally disposed with and width is less than the width of process chamber
It is connected inside the two sides of degree, two neighboring baffle interval and process chamber.
Desulfurization removing nitric dedusting is combined into one by the coal furnace flue gas emission processing unit, it is possible to reduce desulfurization removing nitric dedusting
Process and occupied area.
Embodiment 4:
On the basis of embodiment 2, a kind of coal furnace flue gas emission processing unit as shown in Figure 1 is present embodiments provided, also
Including solid waste water treatment facilities and blow-off line, the blow-off line is set to chamber bottom, and the process chamber passes through sewage pipe
Road is connected to solid waste water treatment facilities.
In the present embodiment, the solid waste water treatment facilities includes solid waste settlement treatment pond 9, the reverse osmosis place being sequentially communicated
Reason unit 10 and clear water storage tank 11, the clear water storage tank 11 are connected to dedusting liquid pipe road.
Processing is carried out to solid sewage and realizes that water is recycled, effectively reduces the discharge amount of toxic gas and waste water, environment is dirty
Dye is few, and cost substantially reduces.
Embodiment 5:
On the basis of embodiment 1, a kind of coal furnace flue gas emission processing unit, the heat-exchanging chamber 4 are present embodiments provided
Equipped with coil pipe, the input end of the coil pipe is connected to air, and the outlet end of the coil pipe is connected to coal furnace 13.
Flue gas outside coil pipe, walk in pipe by air, and the two removes smoke white when being discharged by heat exchange, reduction flue-gas temperature
Cigarette, that is, white plume, the air that temperature rises lead to the fresh air that can be used as preheating to coal furnace 13.
Embodiment 6:
On the basis of embodiment 1, a kind of coal furnace flue gas emission processing unit, the heat-exchanging chamber 4 are present embodiments provided
Top is communicated with cooling water pipeline by spray thrower.
The heat-exchanging chamber 4 is additionally provided with demister.
Flue-gas temperature is reduced by cool water shower, reduces the temperature difference of flue gas and environment temperature, effective reducing smoke discharge
When white plume speed of production, with the continuous diffusion of flue gas in an atmosphere, the partial pressure of vapor constantly drops in flue gas
Low, the small water droplet that part has been precipitated can gasify again, when the corresponding saturation temperature of the partial pressure of vapor is down to misty water droplet
Temperature under (re-evaporation point) when, all small water droplets can all gasify, white plume i.e. vanish from sight.
Embodiment 7:
A kind of coal furnace flue gas treating process is present embodiments provided, using the coal furnace flue gas emission processing unit of embodiment 1,
The flue gas that coal furnace 13 is discharged enters process chamber, respectively after 1 dedusting of dirt pocket, 2 desulfurization of desulfurization chamber, 3 denitrogenation of denitrogenation room, then
The temperature that flue gas is reduced by heat exchange is discharged finally by chimney 12.
Embodiment 8:
On the basis of embodiment 7, a kind of coal furnace flue gas treating process as shown in Figure 2, the fire coal are present embodiments provided
The flue gas that furnace 13 is discharged carries out pre- denitrogenation, the sewage and solid waste of process chamber discharge by reduction method and low nitrogen burning in combustion furnace
The clear water generated after being handled by solid waste water treatment facilities is for dedusting.
Wherein, dedusting liquid is clear water, and doctor solution is double alkali, and denitrogenation liquid is sodium sulfite.Ejecting liquid utilization and recycle reduces
Cost.
The foregoing examples are only illustrative of the present invention, does not constitute the limitation to protection scope of the present invention, all
It is within being all belonged to the scope of protection of the present invention with the same or similar design of the present invention.The component that embodiment does not describe in detail
With the well-known components and common structure or conventional means of the structure category industry, do not describe one by one here.
Claims (10)
1. a kind of coal furnace flue gas emission processing unit, it is characterised in that: including process chamber, flue gas connecting pipe (7) and processing
Liquid connecting pipe (8), the process chamber are built using armored concrete, the flue gas connecting pipe (7) and treatment fluid communicating pipe
Road (8) is connected to process chamber；
The process chamber includes the dirt pocket (1) being sequentially communicated, desulfurization chamber (2), denitrogenation room (3) and heat-exchanging chamber (4), the cigarette
Gas connecting pipe (7) is connected to dirt pocket (1), the desulfurization chamber (2) and denitrogenation room (3) be it is one or more consecutive, it is adjacent
Partition is equipped between two rooms, the treatment fluid connecting pipe (8) includes at least dedusting liquid pipe road, doctor solution pipeline and denitrogenation
Liquid pipe road, dedusting liquid pipe road, doctor solution pipeline, denitrogenation liquid pipeline respectively with dirt pocket (1), desulfurization chamber (2), denitrogenation room
(3) the spray thrower connection at the top of, heat-exchanging chamber (4) side is equipped with the flue being connected to chimney (12).
2. a kind of coal furnace flue gas emission processing unit according to claim 1, it is characterised in that: the dirt pocket (1),
Desulfurization chamber (2), denitrogenation room (3) and heat-exchanging chamber (4) are set gradually in the horizontal direction, and the partition is vertically arranged and height is less than
The height of process chamber, the partition include the upper spacer (5) connecting at the top of processing chamber interior walls and connect with processing chamber interior walls bottom
The lower clapboard (6) connect, upper spacer (5) and the setting of lower clapboard (6) interval.
3. a kind of coal furnace flue gas emission processing unit according to claim 1, it is characterised in that: the dirt pocket (1),
Desulfurization chamber (2), denitrogenation room (3) and heat-exchanging chamber (4) are set gradually from bottom to up, and the partition is horizontally disposed and width is less than place
Manage the width of room, the two sides inside connection of two neighboring baffle interval and process chamber.
4. a kind of coal furnace flue gas emission processing unit according to claim 1, it is characterised in that: further include at solid waste water
Device and blow-off line are managed, the blow-off line is set to chamber bottom, and the process chamber passes through at blow-off line and solid waste water
Manage device connection.
5. a kind of coal furnace flue gas emission processing unit according to claim 1, feature exist: the heat-exchanging chamber (4)
Equipped with coil pipe, the input end of the coil pipe is connected to air, and the outlet end of the coil pipe is connected to coal furnace (13).
6. a kind of coal furnace flue gas emission processing unit according to claim 1, it is characterised in that: the heat-exchanging chamber
(4) top is communicated with cooling water pipeline by spray thrower.
7. a kind of coal furnace flue gas emission processing unit according to claim 4, it is characterised in that: the solid waste water process
Device includes the solid waste settlement treatment pond (9) being sequentially communicated, reverse osmosis treatment unit (10) and clear water storage tank (11), the clear water
Storage tank (11) is connected to dedusting liquid pipe road.
8. a kind of coal furnace flue gas emission processing unit according to claim 5, it is characterised in that: the heat-exchanging chamber
(4) it is additionally provided with demister.
9. a kind of coal furnace flue gas treating process uses coal furnace flue gas emission processing unit as claimed in claim 4, feature
Be: the flue gas of coal furnace (13) discharge enters process chamber, passes through dirt pocket (1) dedusting, desulfurization chamber (2) desulfurization, denitrogenation respectively
After room (3) denitrogenation, then by the temperature of heat exchange reduction flue gas, it is discharged finally by chimney (12).
10. a kind of coal furnace flue gas treating process according to claim 9, it is characterised in that: coal furnace (13) row
Flue gas out carries out pre- denitrogenation by reduction method and low nitrogen burning in combustion furnace, and the sewage and solid waste of process chamber discharge pass through solid
The clear water generated after wastewater treatment equipment processing is for dedusting.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910438179.1A CN109999589A (en) | 2019-05-24 | 2019-05-24 | A kind of coal furnace flue gas emission processing unit and flue gas treating process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910438179.1A CN109999589A (en) | 2019-05-24 | 2019-05-24 | A kind of coal furnace flue gas emission processing unit and flue gas treating process |
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| CN109999589A true CN109999589A (en) | 2019-07-12 |
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| CN201910438179.1A Pending CN109999589A (en) | 2019-05-24 | 2019-05-24 | A kind of coal furnace flue gas emission processing unit and flue gas treating process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108800966A (en) * | 2018-09-05 | 2018-11-13 | 安徽磐盛新型材料科技有限公司 | A kind of air-cooled thermal cycle of flue gas utilizes cooling system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108800966A (en) * | 2018-09-05 | 2018-11-13 | 安徽磐盛新型材料科技有限公司 | A kind of air-cooled thermal cycle of flue gas utilizes cooling system |
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