CN112495184A - Low-temperature SCR catalytic method denitration device - Google Patents
Low-temperature SCR catalytic method denitration device Download PDFInfo
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- CN112495184A CN112495184A CN202011378367.9A CN202011378367A CN112495184A CN 112495184 A CN112495184 A CN 112495184A CN 202011378367 A CN202011378367 A CN 202011378367A CN 112495184 A CN112495184 A CN 112495184A
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- denitration
- wall
- flue gas
- pipe
- temperature control
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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
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8631—Processes characterised by a specific device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
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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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- Environmental & Geological Engineering (AREA)
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- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to a low-temperature SCR catalytic method denitration device, which is characterized in that: including denitration jar, mixing box and temperature control sleeve, the outer wall of denitration jar on be provided with the supporting seat, temperature control sleeve suit in the outside of denitration jar and its lower extreme is fixed on the supporting seat, the bottom of denitration jar still be provided with four supporting legss, the top of denitration jar still be provided with the force pump, the force pump connect with the catalyst case through the first pipeline that sets up on its one side outer wall and communicate mutually, the force pump be linked together through the liquid outlet of its bottom and the interior shower head of denitration jar, the telescopic lateral wall of temperature control in seted up the cavity, the cavity be linked together through inlet tube and outlet pipe and mixing box respectively. The design has the advantages of simple structure, easy manufacture, practicality and high efficiency.
Description
Technical Field
The invention relates to the technical field of flue gas purification, in particular to low-temperature SCR catalytic method denitration equipment.
Background
The flue gas is one of the main emissions of thermal power plants, and is generated by burning combustible materials in a burner (i.e. a boiler), because the flue gas usually contains a large amount of nitrogen oxides, which can cause very corrosive acid rain if directly discharged into the atmosphere, the flue gas must be denitrified (i.e. denitrified) before being discharged, the normal treatment method is that the nitrogen oxides in the flue gas and ammonia gas chemically react at a certain temperature, so as to reduce the content of the nitrogen oxides, with the rapid development of scientific technology, the flue gas denitration device is also technically improved, but in the prior art, because the flue gas usually contains other solid materials, after denitration, a small amount of water formed by the solid materials and the chemical reaction is attached to the inner wall of the device, which causes inconvenience in cleaning residues flowing down after denitration, and the ammonia gas is easy to enter the next step along with the process under the condition of incomplete reaction, causing the pollution of ammonia gas.
Disclosure of Invention
The invention provides a low-temperature SCR catalytic method denitration device, which prolongs the denitration treatment time of flue gas by arranging a flue gas conveying channel formed by sequentially communicating eight vertical channels from left to right in a purification chamber, ensures the denitration effect of the flue gas, and plays a role in increasing the practical performance of the denitration device.
In order to solve the technical problem, the invention provides a low-temperature SCR catalytic method denitration device, which is characterized in that: the denitration device comprises a denitration tank, a mixing box body and a temperature control sleeve, wherein a supporting seat is arranged on the outer wall of the denitration tank, the temperature control sleeve is sleeved outside the denitration tank, the lower end of the temperature control sleeve is fixed on the supporting seat, four supporting legs are further arranged at the bottom of the denitration tank, a pressure pump is further arranged at the top of the denitration tank, the pressure pump is communicated with a catalyst box through a first pipeline joint arranged on the outer wall of one side of the pressure pump, the pressure pump is communicated with a spray header in the denitration tank through a liquid outlet at the bottom of the pressure pump, a cavity is formed in the side wall of the temperature control sleeve, the cavity is respectively communicated with the mixing box body through a water inlet pipe and a water outlet pipe, a tap water pipe is connected to the top of the mixing box body, a temperature control device and a stirrer are arranged in the mixing box body, and a first liquid pump is, the outlet pipe on install the ooff valve, the lateral wall of denitration jar on still be connected with flue gas inlet pipe and denitration flue gas discharging pipe, the temperature control sleeve on seted up respectively with flue gas inlet pipe and denitration flue gas discharging pipe assorted through-hole, the flue gas inlet pipe on still be connected with the ammonia inlet pipe.
Further: the temperature control device comprises a temperature sensor, an electric heating pipe and a condenser, wherein the temperature sensor is arranged in the cavity and the mixing box body, the electric heating pipe is arranged at the bottom in the mixing box body, and the condenser is arranged on the water outlet pipe.
And further: the outer wall of the other side of the pressure pump is further provided with a second pipeline joint, the second pipeline joint is connected with the mixing box body through a liquid pumping pipe, and a second liquid pumping pump is installed on the liquid pumping pipe.
And further: the denitration jar in the level be provided with the filter plate, the filter plate separate into upper and lower two parts with the inner space of denitration jar, wherein upper portion is the clean room, the sub-unit is the recovery room, the bottom of recovery room still seted up the discharge orifice, discharge orifice department still install the solenoid valve sealed to it, the clean room in still be connected with two L templates, two first division boards and three second division boards, two L templates are connected respectively on the inner wall of clean room left and right sides, two first division boards are vertical to be fixed on the filter plate, three second division boards are vertical to be fixed at the top in the clean room, the left and right sides of every first division board respectively is provided with a second division board, the lower extreme and the front and back both ends of first division board link to each other with the filter plate and two inner walls around the clean room respectively, the upper end and front and back both ends of second division board link to each other with roof and two inner walls around in the clean room respectively, the inner wall and the roof of two first division boards, three second division boards, two L templates, filter plate and clean room form one and erect the flue gas transfer passage who says from left to right intercommunication in proper order by eight, connect the first perpendicular way that forms between the left side inner wall of an L template on the inner wall of clean room left side and clean room, the flue gas inlet pipe just face first perpendicular way, connect the eighth perpendicular way that forms between the right side inner wall of an L template on the inner wall of clean room right side and clean room, denitration flue gas discharging pipe just face eighth perpendicular way.
And further: and spray heads are arranged in the third vertical channel, the fourth vertical channel, the fifth vertical channel and the sixth vertical channel, and are communicated with a liquid outlet at the bottom of the pressure pump through a conveying channel arranged at the top of the denitration tank.
And further: the supporting legs constitute by L type spike, backup pad and triangle strengthening rib, the upper end of L type spike connect on the outer wall of denitration jar lower extreme, backup pad horizontal connection in the bottom of denitration jar and its one end and L type spike link integratively, the triangle strengthening rib set up between L type spike and backup pad.
And further: the denitration flue gas discharging pipe in detachably be connected with 1 or the active carbon cartridge filter more than 1, the active carbon cartridge filter press from both sides tightly through stopper and ring flange and fix in the denitration flue gas discharging pipe, the stopper setting in the denitration flue gas discharging pipe, the one end of ring flange stretch into in the denitration flue gas discharging pipe and be provided with external screw thread on its outer wall, the inner wall of denitration flue gas discharging pipe on be provided with external screw thread assorted internal thread.
After the structure is adopted, the smoke conveying channel formed by sequentially communicating eight vertical channels from left to right is arranged in the purification chamber, so that the denitration treatment time of smoke is prolonged, the denitration effect of the smoke is ensured, and the effect of improving the practical performance of the smoke is achieved; and the design also has the advantages of simple structure, easy manufacture, practicality and high efficiency.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a view showing the internal structure of a denitration tank.
Fig. 3 is a structural view of the supporting foot.
FIG. 4 is an internal structure view of the denitration flue gas discharging pipe.
Detailed Description
As shown in fig. 1, a low-temperature SCR catalytic denitration apparatus comprises a denitration tank 1, a mixing box 12 and a temperature control sleeve 2, wherein a support seat 4 is arranged on the outer wall of the denitration tank, the temperature control sleeve is sleeved outside the denitration tank, the lower end of the temperature control sleeve is fixed on the support seat, four support legs 3 are further arranged at the bottom of the denitration tank, a pressure pump 15 is further arranged at the top of the denitration tank, the pressure pump is communicated with a catalyst box through a first pipeline joint 15-1 arranged on the outer wall of one side of the pressure pump, the pressure pump is communicated with a spray header 20 in the denitration tank through a liquid outlet at the bottom of the pressure pump, a cavity is formed in the side wall of the temperature control sleeve, the cavity is communicated with the mixing box through a water inlet pipe 8 and a water outlet pipe 10, the top of the mixing box is connected with a tap water pipe 14, the mixing box in be provided with temperature control device and agitator, the inlet tube on install first drawing liquid pump 9, the outlet pipe on install ooff valve 11, the lateral wall of denitration jar on still be connected with flue gas inlet pipe 5 and denitration flue gas discharging pipe 7, the temperature control sleeve on seted up respectively with flue gas inlet pipe 5 and denitration flue gas discharging pipe 7 assorted through-hole, the flue gas inlet pipe on still be connected with the ammonia inlet pipe.
The temperature control device shown in fig. 1 comprises a temperature sensor, an electric heating pipe and a condenser 22, wherein the temperature sensor is arranged in a cavity and a mixing box body, the electric heating pipe is arranged at the bottom in the mixing box body, and the condenser is arranged on a water outlet pipe.
The other side of the outer wall of the pressure pump shown in fig. 1 is also provided with a second pipe joint 15-2, which is connected with the mixing box body through a liquid pumping pipe 16, and a second liquid pumping pump 17 is installed on the liquid pumping pipe.
As shown in figure 2 in the denitration tank horizontally arranged filter plate 19, the filter plate with denitration tank internal space separated into upper and lower two parts, wherein the upper part is purification chamber 1-2, the lower part is recovery chamber 1-1, the recovery chamber bottom still has a vent hole, the vent hole still installs its sealed solenoid valve, the purification chamber in still be connected with two L-shaped plates 18-1, two first partition plate 18-2 and three second partition plate 18-3, two L-shaped plates 18-1 respectively connected to the purification chamber left and right side inner wall, two first partition plate vertically fixed on the filter plate, three second partition plate vertically fixed on the purification chamber top, each first partition plate left and right sides respectively provided with a second partition plate, the first partition plate lower end and front and back both ends respectively with the filter plate and purification chamber front and back two inner walls connected, the upper end and the front and back both ends of second division board link to each other with roof and two inner walls around in the clean room respectively, the inner wall and the roof of two first division boards, three second division boards, two L templates, filter plate and clean room form one by eight perpendicular cigarette transfer passage who says from left to right intercommunication in proper order, connect the first perpendicular way that forms between the left side inner wall of an L template on the inner wall of clean room left side and clean room, the flue gas inlet pipe face first perpendicular way, connect the eighth perpendicular way that forms between the right side inner wall of an L template on the inner wall of clean room right side and clean room, denitration flue gas discharging pipe face eighth perpendicular way.
As shown in fig. 2, spray headers 20 are arranged in the third vertical channel, the fourth vertical channel, the fifth vertical channel and the sixth vertical channel, and the spray headers are communicated with a liquid outlet at the bottom of the pressure pump through a conveying channel arranged at the top of the denitration tank.
The supporting leg shown in fig. 3 is composed of an L-shaped supporting leg 3-1, a supporting plate 3-2 and a triangular reinforcing rib 3-3, wherein the upper end of the L-shaped supporting leg is connected to the outer wall of the lower end of the denitration tank, the supporting plate is horizontally connected to the bottom of the denitration tank, one end of the supporting plate is connected with the L-shaped supporting leg into a whole, and the triangular reinforcing rib is arranged between the L-shaped supporting leg and the supporting plate.
As shown in fig. 4, the denitration flue gas discharge pipe is internally and detachably connected with 1 or more than 1 activated carbon filter cartridge 21, the activated carbon filter cartridge is clamped and fixed in the denitration flue gas discharge pipe through a limiting block 7-1 and a flange 7-2, the limiting block is arranged in the denitration flue gas discharge pipe, one end of the flange extends into the denitration flue gas discharge pipe, the outer wall of the flange is provided with external threads, and the inner wall of the denitration flue gas discharge pipe is provided with internal threads matched with the external threads.
In conclusion, the flue gas conveying channel formed by sequentially communicating eight vertical channels from left to right is arranged in the purification chamber, so that the denitration treatment time of the flue gas is prolonged, the denitration effect of the flue gas is ensured, and the effect of improving the practical performance of the denitration treatment device is achieved; and the design also has the advantages of simple structure, easy manufacture, practicality and high efficiency.
Claims (7)
1. A low temperature SCR catalytic method denitration device which characterized in that: comprises a denitration tank (1), a mixing box body (12) and a temperature control sleeve (2), wherein a supporting seat (4) is arranged on the outer wall of the denitration tank, the temperature control sleeve is sleeved outside the denitration tank, the lower end of the temperature control sleeve is fixed on the supporting seat, four supporting legs (3) are further arranged at the bottom of the denitration tank, a pressure pump (15) is further arranged at the top of the denitration tank, the pressure pump is communicated with a catalyst box through a first pipeline joint (15-1) arranged on the outer wall of one side of the pressure pump, the pressure pump is communicated with a spray header (20) in the denitration tank through a liquid outlet at the bottom of the pressure pump, a cavity is formed in the side wall of the temperature control sleeve, the cavity is communicated with the mixing box body through a water inlet pipe (8) and a water outlet pipe (10), and a tap water pipe (14) is connected to the top of the mixing box body, the internal temperature control device and the agitator of being provided with of mixing box, the inlet tube on install first drawing liquid pump (9), the outlet pipe on install ooff valve (11), the lateral wall of denitration jar on still be connected with flue gas inlet pipe (5) and denitration flue gas discharging pipe (7), the temperature control sleeve on seted up respectively with flue gas inlet pipe (5) and denitration flue gas discharging pipe (7) assorted through-hole, the flue gas inlet pipe on still be connected with the ammonia inlet pipe.
2. The denitration device adopting the low-temperature SCR catalytic method according to claim 1, characterized in that: the temperature control device comprises a temperature sensor, an electric heating pipe and a condenser (22), wherein the temperature sensor is arranged in the cavity and the mixing box body, the electric heating pipe is arranged at the bottom in the mixing box body, and the condenser is arranged on the water outlet pipe.
3. The denitration device adopting the low-temperature SCR catalytic method according to claim 1, characterized in that: and a second pipeline joint (15-2) is also arranged on the outer wall of the other side of the pressure pump, the second pipeline joint is connected with the mixing box body through a liquid pumping pipe (16), and a second liquid pumping pump (17) is installed on the liquid pumping pipe.
4. The denitration device adopting the low-temperature SCR catalytic method according to claim 1, characterized in that: denitration jar in the level be provided with filter plate (19), the filter plate separate into two upper and lower parts with denitration jar's inner space, wherein upper portion is clean room (1-2), the lower part is retrieved room (1-1), the bottom of retrieving the room still seted up the discharge orifice, discharge orifice department still install the solenoid valve sealed to it, the clean room in still be connected with two L templates (18-1), two first division board (18-2) and three second division board (18-3), two L templates (18-1) are connected respectively on the inner wall of clean room left and right sides, two first division boards are vertical to be fixed on the filter plate, the vertical top of fixing in the clean room of three second division boards, the left and right sides of every first division board respectively is provided with a second division board, the lower extreme and the front and back both ends of first division board link to each other with two inner walls around filter plate and clean room respectively The utility model discloses a denitration flue gas discharging pipe, including the purification chamber, the upper end of second division board, the inner wall of upper end and front and back both ends in the purification chamber, the upper end of second division board and front and back both ends link to each other with roof and front and back two inner walls in the purification chamber respectively, the inner wall and the roof of two first division boards, three second division boards, two L templates, filter plate and purification chamber form one by eight perpendicular cigarette gas transfer passage who says and communicate from left to right in proper order, connect the first perpendicular way that forms between the left side inner wall of an L template on the inner wall of purification chamber left side and purification chamber, the flue gas inlet pipe just face first perpendicular way, the eighth perpendicular way that forms between the right side inner wall of an L template on the inner wall of purification chamber.
5. The denitration device adopting the low-temperature SCR catalytic method according to claim 1, characterized in that: and spray heads (20) are arranged in the third vertical channel, the fourth vertical channel, the fifth vertical channel and the sixth vertical channel, and are communicated with a liquid outlet at the bottom of the pressure pump through a conveying channel arranged at the top of the denitration tank.
6. The denitration device adopting the low-temperature SCR catalytic method according to claim 1, characterized in that: the supporting legs comprise L-shaped supporting legs (3-1), supporting plates (3-2) and triangular reinforcing ribs (3-3), the upper ends of the L-shaped supporting legs are connected to the outer wall of the lower end of the denitration tank, the supporting plates are horizontally connected to the bottom of the denitration tank, one ends of the supporting plates are connected with the L-shaped supporting legs into a whole, and the triangular reinforcing ribs are arranged between the L-shaped supporting legs and the supporting plates.
7. The denitration device adopting the low-temperature SCR catalytic method according to claim 1, characterized in that: the denitration flue gas discharging pipe in detachably be connected with 1 or more than 1 active carbon cartridge filter (21), the active carbon cartridge filter press from both sides tightly through stopper (7-1) and ring flange (7-2) and fix in the denitration flue gas discharging pipe, the stopper setting in the denitration flue gas discharging pipe, the one end of ring flange stretch into in the denitration flue gas discharging pipe and be provided with external screw thread on its outer wall, the inner wall of denitration flue gas discharging pipe on be provided with external screw thread assorted internal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011378367.9A CN112495184A (en) | 2020-11-30 | 2020-11-30 | Low-temperature SCR catalytic method denitration device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011378367.9A CN112495184A (en) | 2020-11-30 | 2020-11-30 | Low-temperature SCR catalytic method denitration device |
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| CN112495184A true CN112495184A (en) | 2021-03-16 |
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| CN202011378367.9A Pending CN112495184A (en) | 2020-11-30 | 2020-11-30 | Low-temperature SCR catalytic method denitration device |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007239486A (en) * | 2006-03-06 | 2007-09-20 | Mitsubishi Fuso Truck & Bus Corp | Exhaust emission control device for internal combustion engine |
| CN105833702A (en) * | 2016-05-03 | 2016-08-10 | 浙江三龙催化剂有限公司 | Dust removal equipment used in cooperation with denitration catalyst tunnel kiln |
| CN205461740U (en) * | 2016-01-29 | 2016-08-17 | 深圳市科恩环保有限公司 | High -efficient flue gas desulfurization denitration treatment device |
| CN205517264U (en) * | 2016-04-05 | 2016-08-31 | 北京创新纪技术开发有限公司 | Energy -concerving and environment -protective SOx/NOx control demercuration device |
| CN106268306A (en) * | 2016-10-20 | 2017-01-04 | 湖南野森环保科技有限责任公司 | A kind of environmental protection equipment of coal desulfurization denitrogenation |
| CN106669405A (en) * | 2017-01-03 | 2017-05-17 | 江苏绿叶环境工程集团有限公司 | Wet desulphurization flue gas purification system |
| CN208599466U (en) * | 2018-06-07 | 2019-03-15 | 江苏维尔思环境工程股份有限公司 | A kind of desulphurization denitration dedusting integral type reaction tower |
-
2020
- 2020-11-30 CN CN202011378367.9A patent/CN112495184A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007239486A (en) * | 2006-03-06 | 2007-09-20 | Mitsubishi Fuso Truck & Bus Corp | Exhaust emission control device for internal combustion engine |
| CN205461740U (en) * | 2016-01-29 | 2016-08-17 | 深圳市科恩环保有限公司 | High -efficient flue gas desulfurization denitration treatment device |
| CN205517264U (en) * | 2016-04-05 | 2016-08-31 | 北京创新纪技术开发有限公司 | Energy -concerving and environment -protective SOx/NOx control demercuration device |
| CN105833702A (en) * | 2016-05-03 | 2016-08-10 | 浙江三龙催化剂有限公司 | Dust removal equipment used in cooperation with denitration catalyst tunnel kiln |
| CN106268306A (en) * | 2016-10-20 | 2017-01-04 | 湖南野森环保科技有限责任公司 | A kind of environmental protection equipment of coal desulfurization denitrogenation |
| CN106669405A (en) * | 2017-01-03 | 2017-05-17 | 江苏绿叶环境工程集团有限公司 | Wet desulphurization flue gas purification system |
| CN208599466U (en) * | 2018-06-07 | 2019-03-15 | 江苏维尔思环境工程股份有限公司 | A kind of desulphurization denitration dedusting integral type reaction tower |
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