CN212492397U - Active burnt SOx/NOx control gas cleaning adsorbs desorption integrated device - Google Patents
Active burnt SOx/NOx control gas cleaning adsorbs desorption integrated device Download PDFInfo
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- CN212492397U CN212492397U CN202020995252.3U CN202020995252U CN212492397U CN 212492397 U CN212492397 U CN 212492397U CN 202020995252 U CN202020995252 U CN 202020995252U CN 212492397 U CN212492397 U CN 212492397U
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Abstract
The utility model relates to an active coke desulfurization and denitrification flue gas purification, adsorption and desorption integrated device, which comprises a conveying unit, an adsorption unit and a desorption unit which are integrated in the same shell and are arranged from top to bottom in sequence; the conveying unit consists of a feeding air-lock valve, a denitration section discharging air-lock valve, a desulfuration section discharging air-lock valve and a discharging air-lock valve; the adsorption unit is provided with a denitration section and a desulfurization section; the desorption unit is provided with a desorption reaction chamber; the denitration section is provided with 2 denitration reaction chambers, and the desulfurization section is provided with 2 desulfurization reaction chambers; the number of the desorption reaction chambers is 2, and a heating chamber and a cooling chamber are respectively arranged in each desorption reaction chamber one above the other; the utility model discloses an integration of active burnt flue gas purification adsorption and desorption can guarantee the safety and stability of absorption and desorption process to device compact structure, area is little, and active burnt wearing and tearing volume is few.
Description
Technical Field
The utility model relates to an active burnt gas purification technical field especially relates to an active burnt SOx/NOx control gas cleaning adsorbs desorption integrated device.
Background
The flue gas purification technology of desulfurization and denitrification by active coke has the advantages of high-efficiency desulfurization, sulfur resource recovery, low-temperature denitration without temperature rise, no waste solid and wastewater secondary pollution and the like, and is popularized and applied in a certain range in the fields of high-sulfur low-nitrogen flue gas treatment such as sintering, boilers and the like.
In the flue gas purification technology of desulfurization and denitrification by active coke, sulfur dioxide and nitric oxide in the flue gas are removed by the active coke through physical and chemical adsorption under the condition of low temperature (below 120 ℃), and the active coke after saturated adsorption is activated and regenerated through high-temperature desorption. Therefore, the conventional activated coke flue gas purification, desulfurization and denitrification device generally needs to be provided with an adsorption tower and a desorption tower, the activated coke completes the desulfurization, denitrification and purification process of flue gas in the adsorption tower, and then is moved into the desorption tower through a bucket elevator, and the activated coke is heated by high-temperature flue gas to be activated and regenerated. In the process, because the temperature of the adsorption flue gas is lower and the airflow in the adsorption tower is unevenly distributed, the temperature of the active coke at a hopper and a discharge device at the lower part of the adsorption tower body is lower, and water vapor in the flue gas is easy to condense at the part to cause the corrosion of the device; meanwhile, the active coke needs to be transported between the adsorption tower and the desorption tower, so that the abrasion loss of the active coke is large, and the operation cost is high.
Disclosure of Invention
The utility model provides an active burnt SOx/NOx control gas cleaning adsorbs desorption integrated device has realized the integration that active burnt gas cleaning adsorbs the desorption, can guarantee the safety and stability of absorption and desorption process to device compact structure, area is little, and active burnt wearing and tearing volume is few.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an active coke desulfurization and denitrification flue gas purification, adsorption and desorption integrated device comprises a conveying unit, an adsorption unit and a desorption unit which are integrated in the same shell and are sequentially arranged from top to bottom; the conveying unit consists of a feeding air-lock valve, a denitration section discharging air-lock valve, a desulfuration section discharging air-lock valve and a discharging air-lock valve; the adsorption unit is provided with a denitration section and a desulfurization section; the desorption unit is provided with a desorption reaction chamber; the denitration section is provided with 2 denitration reaction chambers, and the desulfurization section is provided with 2 desulfurization reaction chambers; the number of the desorption reaction chambers is 2, and a heating chamber and a cooling chamber are respectively arranged in each desorption reaction chamber one above the other; the top of the denitration reaction chamber is provided with an active coke inlet which is connected with a feeding air-lock valve through an active coke conveying pipeline, and an active coke outlet at the bottom of the denitration reaction chamber is connected with an active coke inlet at the top of the desulphurization reaction chamber through a denitration section discharging air-lock valve; an active coke outlet at the bottom of the desulfurization reaction chamber is connected with an active coke inlet at the top of a heating chamber in the desorption unit through a desulfurization section discharge air-lock valve; the bottom of the heating chamber is directly communicated with the top of the cooling chamber, and an active coke outlet at the bottom of the cooling chamber is connected with a discharge air locking valve; between 2 denitration reaction chambers, a flue gas upper outlet is arranged at the position of the shell corresponding to the upper part of the denitration reaction chamber; between 2 desulfurization reaction chambers, a flue gas middle inlet is arranged at the position of the shell corresponding to the bottom of the desulfurization reaction chamber; a partition plate is arranged in the shell between the adsorption unit and the desorption unit to divide the interior of the shell into an upper space and a lower space, the outer spaces of the denitration reaction chamber and the desulfurization reaction chamber are air chambers, and an ammonia spraying pipe and a nitrogen spraying pipe are respectively arranged in the air chambers at two sides corresponding to the desulfurization section; a plurality of air inlet grids are arranged on the side walls of the denitration reaction chamber and the desulphurization reaction chamber; a tail gas outlet is arranged in the middle of the shell corresponding to the top of the desorption unit; a carrier gas inlet is arranged at the middle part of the shell corresponding to the bottom of the desorption unit; the middle part of the shell between the 2 heating chambers is provided with a hot air inlet, and the corresponding sides of the shell outside the 2 heating chambers are respectively provided with a hot air outlet; the middle part of the shell between the 2 cooling chambers is provided with a cold air inlet, and the corresponding sides of the shell outside the 2 cooling chambers are respectively provided with a cold air outlet.
The 2 denitration reaction chambers are symmetrically arranged on two sides of the center line of the shell, and the 2 denitration reaction chambers, the 2 desulphurization reaction chambers and the 2 desorption reaction chambers are connected in sequence from top to bottom in a one-to-one correspondence manner.
The outer surface of the shell is provided with a heat insulation layer, and a temperature detection device is arranged in the shell.
The feeding air locking valve and the discharging air locking valve are sealed by inert gas, and the discharging amount of the feeding air locking valve and the discharging air locking valve can be adjusted; the feeding air locking valve and the discharging air locking valve are respectively controlled by the control system and the temperature detection device in the shell in an interlocking way.
And a pneumatic valve or an electric quick-opening valve is respectively arranged on the nitrogen nozzle and at the carrier gas inlet, and is interlocked and controlled with a temperature detection device in the shell through a control system.
A shell-and-tube dividing wall heater is arranged in the heating chamber, an active coke inlet is arranged at the top end of a heat exchange tube of the dividing wall heater, and an active coke outlet is arranged at the bottom end of the heat exchange tube of the dividing wall heater; two ends of the shell of the dividing wall heater are respectively connected with a hot air inlet and a hot air outlet.
A shell-and-tube type dividing wall cooler is arranged in the cooling chamber, an active coke inlet is formed in the top end of a heat exchange tube of the dividing wall cooler, and an active coke outlet is formed in the bottom end of the heat exchange tube; two ends of the shell of the dividing wall cooler are respectively connected with the cold air inlet and the cold air outlet.
Fins are arranged on the outer side of the heat exchange tube.
Compared with the prior art, the beneficial effects of the utility model are that:
1) the device has compact structure, convenient operation and material saving;
2) the active coke does not need to be transported backwards between the adsorption tower and the desorption tower, the abrasion loss of the active coke is small, and the operation cost is low;
3) the device can be rapidly filled with nitrogen for protection in an accident state, has good safety and is beneficial to ensuring the normal operation of the device.
Drawings
FIG. 1 is a schematic structural diagram of an integrated device for purifying, adsorbing and desorbing active coke, desulfurizing and denitrifying flue gas.
In the figure: 1. the denitration and desulfurization device comprises a conveying unit 1-1, a feeding air-lock valve 1-2, a denitration section discharging air-lock valve 1-3, a desulfurization section discharging air-lock valve 1-4, a discharging air-lock valve 2, an adsorption unit 2-1, a desulfurization reaction chamber 2-2, a denitration reaction chamber 2-3, a flue gas middle inlet 2-4, an air chamber 2-5, a flue gas upper outlet 2-6, an ammonia injection pipe 2-7, an air inlet grid 2-8, a nitrogen gas spray pipe 3, a desorption unit 3-1, a hot air inlet 3-2, a hot air outlet 3-3, a partition wall heater 3-4, a cold air inlet 3-5, a cold air outlet 3-6, a partition wall cooler 3-7, a carrier gas inlet 3-8 and a tail gas outlet
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
as shown in fig. 1, the integrated device for purifying, adsorbing and desorbing active coke, desulfurization and denitrification flue gas of the present invention comprises a conveying unit 1, an adsorbing unit 2 and a desorbing unit 3 which are integrated in the same housing and are sequentially arranged from top to bottom; the conveying unit 1 consists of a feeding air-lock valve 1-1, a denitration section discharging air-lock valve 1-2, a desulfuration section discharging air-lock valve 1-3 and a discharging air-lock valve 1-4; the adsorption unit 2 is provided with a denitration section and a desulfurization section; the desorption unit 3 is provided with a desorption reaction chamber; the denitration section is provided with 2 denitration reaction chambers 2-2, and the desulfurization section is provided with 2 desulfurization reaction chambers 2-1; the number of the desorption reaction chambers is 2, and a heating chamber and a cooling chamber are respectively arranged in each desorption reaction chamber one above the other; an active coke inlet is formed in the top of the denitration reaction chamber 2-2 and is connected with the feeding air-lock valve 1-2 through an active coke conveying pipeline, and an active coke outlet in the bottom of the denitration reaction chamber 2-2 is connected with an active coke inlet in the top of the desulphurization reaction chamber 2-1 through a denitration section discharging air-lock valve 1-2; an active coke outlet at the bottom of the desulfurization reaction chamber 2-1 is connected with an active coke inlet at the top of a heating chamber in the desorption unit through a desulfurization section discharge air-lock valve 1-3; the bottom of the heating chamber is directly communicated with the top of the cooling chamber, and an active coke outlet at the bottom of the cooling chamber is connected with a discharging air-locking valve 1-4; between 2 denitration reaction chambers 2-2, a flue gas upper outlet 2-5 is arranged at the shell corresponding to the upper part of the denitration reaction chamber 2-2; between 2 desulfurization reaction chambers 2-2, a flue gas middle inlet 2-3 is arranged at the shell corresponding to the bottom of the desulfurization reaction chamber 2-2; a partition plate is arranged in the shell between the adsorption unit 2 and the desorption unit 3 to divide the interior of the shell into an upper space and a lower space, the outer spaces of the denitration reaction chamber 2-2 and the desulphurization reaction chamber 2-1 are air chambers 2-4, and an ammonia spraying pipe 2-6 and a nitrogen spraying pipe 2-8 are respectively arranged in the air chambers 2-4 at the two sides corresponding to the desulphurization section; a plurality of air inlet grids 2-7 are arranged on the side walls of the denitration reaction chamber 2-2 and the desulphurization reaction chamber 2-1; a tail gas outlet 3-8 is arranged in the middle of the shell corresponding to the top of the desorption unit 3; a carrier gas inlet 3-7 is arranged at the middle part of the shell corresponding to the bottom of the desorption unit 3; the middle part of the shell between the 2 heating chambers is provided with a hot air inlet 3-1, and the corresponding sides of the shell outside the 2 heating chambers are respectively provided with a hot air outlet 3-2; the middle part of the shell between the 2 cooling chambers is provided with a cold air inlet 3-4, and the corresponding sides of the shell outside the 2 cooling chambers are respectively provided with a cold air outlet 3-5.
The 2 denitration reaction chambers 2-2 are symmetrically arranged on two sides of the center line of the shell, and the 2 denitration reaction chambers 2-2, the 2 desulphurization reaction chambers 2-1 and the 2 desorption reaction chambers are connected in sequence from top to bottom in a one-to-one correspondence manner.
The outer surface of the shell is provided with a heat insulation layer, and a temperature detection device is arranged in the shell.
The feeding air locking valve 1-1 and the discharging air locking valve 1-4 are sealed by inert gas, and the discharging amount can be adjusted; the feeding air-lock valve 1-1 and the discharging air-lock valve 1-4 are respectively interlocked and controlled with a temperature detection device in the shell through a control system.
Pneumatic valves or electric quick-opening valves are respectively arranged on the nitrogen nozzles 2-8 and the carrier gas inlets 3-7 and are interlocked and controlled with a temperature detection device in the shell through a control system.
A shell-and-tube dividing wall heater 3-3 is arranged in the heating chamber, an active coke inlet is arranged at the top end of a heat exchange tube of the dividing wall heater 3-3, and an active coke outlet is arranged at the bottom end; two ends of the shell of the dividing wall heater 3-3 are respectively connected with a hot air inlet 3-1 and a hot air outlet 3-2.
A shell-and-tube type dividing wall cooler 3-6 is arranged in the cooling chamber, an active coke inlet is arranged at the top end of a heat exchange tube of the dividing wall cooler 3-6, and an active coke outlet is arranged at the bottom end; two ends of the shell of the dividing wall cooler 3-6 are respectively connected with a cold air inlet 3-4 and a cold air outlet 3-5.
Fins are arranged on the outer side of the heat exchange tube.
Based on integrated device's active burnt SOx/NOx control gas cleaning adsorbs desorption integration method as follows:
1) granular active coke is conveyed into the integrated device through the feeding air lock valve 1-1 and then enters the adsorption unit 2 through an active coke conveying pipeline, the active coke purifies nitrogen oxide and other harmful gases in the flue gas through physical adsorption and selective catalytic reduction in 2 denitration reaction chambers 2-2 of the denitration section, then the active coke enters the desulfurization section of the adsorption unit 2 through the denitration section discharging air lock valve 1-2,
2) in 2 desulfurization reaction chambers 2-1 of the desulfurization section, sulfur dioxide and other harmful gases in the flue gas are purified through the physical adsorption and chemical adsorption of active coke; meanwhile, a desulphurization reaction chamber 2-1 filled with granular active coke is equivalent to a granular layer filter, and most of dust particles in the flue gas are captured under the action of inertial collision and interception effect;
3) flue gas to be purified enters an adsorption unit 2 through a flue gas middle inlet 2-3, cross flow passes through a desulfurization section to enter gas chambers 2-4 at two sides of the adsorption unit 2, ammonia spraying operation is carried out through ammonia spraying pipes 2-6 arranged in the gas chambers 2-4, the flue gas and ammonia gas are mixed and then cross flow passes through a denitration section, and then the flue gas is discharged through a flue gas upper outlet 2-5;
4) the active coke enters a desorption unit 3 through a desulfurization section discharge air-lock valve 1-3, the active coke exchanges heat with hot air passing through a shell pass through a tube pass of a dividing wall heater 3-3 in a heating section of the desorption unit 3, the temperature is raised to over 400 ℃, and sulfuric acid adsorbed by the active coke at high temperature reacts with the active coke to generate SO2A gas;
5) the active coke enters a cooling section of a desorption unit 3 after being desorbed and adsorbed by high temperature, exchanges heat with cold air in a shell pass through a tube pass in a dividing wall cooler 3-6, the temperature is reduced to below 120 ℃, and the cooled active coke is discharged through a discharge air-lock valve 1-4;
6) the nitrogen gas entering from the carrier gas inlet 3-7 flows upwards through the cooling section, and then the nitrogen gas containing SO generated in the desorption process flows through the heating section2CO and CO2The tail gas is carried and discharged from a tail gas outlet 3-8.
When the temperature sensor detects that the internal temperature of the integrated device is continuously increased and exceeds the alarm temperature, the feeding air-lock valve 1-1 is closed, and meanwhile, the denitration section discharging air-lock valve 1-2, the desulfuration section discharging air-lock valve 1-3 and the discharging air-lock valve 1-4 are all closed; pneumatic valves or electric quick-opening valves arranged on the nitrogen nozzles 2-8 and the carrier gas inlets 3-7 are interlocked and opened to carry out nitrogen charging protection on the interior of the integrated device.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (8)
1. An active coke desulfurization and denitrification flue gas purification, adsorption and desorption integrated device is characterized by comprising a conveying unit, an adsorption unit and a desorption unit which are integrated in the same shell and are sequentially arranged from top to bottom; the conveying unit consists of a feeding air-lock valve, a denitration section discharging air-lock valve, a desulfuration section discharging air-lock valve and a discharging air-lock valve; the adsorption unit is provided with a denitration section and a desulfurization section; the desorption unit is provided with a desorption reaction chamber; the denitration section is provided with 2 denitration reaction chambers, and the desulfurization section is provided with 2 desulfurization reaction chambers; the number of the desorption reaction chambers is 2, and a heating chamber and a cooling chamber are respectively arranged in each desorption reaction chamber one above the other; the top of the denitration reaction chamber is provided with an active coke inlet which is connected with a feeding air-lock valve through an active coke conveying pipeline, and an active coke outlet at the bottom of the denitration reaction chamber is connected with an active coke inlet at the top of the desulphurization reaction chamber through a denitration section discharging air-lock valve; an active coke outlet at the bottom of the desulfurization reaction chamber is connected with an active coke inlet at the top of a heating chamber in the desorption unit through a desulfurization section discharge air-lock valve; the bottom of the heating chamber is directly communicated with the top of the cooling chamber, and an active coke outlet at the bottom of the cooling chamber is connected with a discharge air locking valve; between 2 denitration reaction chambers, a flue gas upper outlet is arranged at the position of the shell corresponding to the upper part of the denitration reaction chamber; between 2 desulfurization reaction chambers, a flue gas middle inlet is arranged at the position of the shell corresponding to the bottom of the desulfurization reaction chamber; a partition plate is arranged in the shell between the adsorption unit and the desorption unit to divide the interior of the shell into an upper space and a lower space, the outer spaces of the denitration reaction chamber and the desulfurization reaction chamber are air chambers, and an ammonia spraying pipe and a nitrogen spraying pipe are respectively arranged in the air chambers at two sides corresponding to the desulfurization section; a plurality of air inlet grids are arranged on the side walls of the denitration reaction chamber and the desulphurization reaction chamber; a tail gas outlet is arranged in the middle of the shell corresponding to the top of the desorption unit; a carrier gas inlet is arranged at the middle part of the shell corresponding to the bottom of the desorption unit; the middle part of the shell between the 2 heating chambers is provided with a hot air inlet, and the corresponding sides of the shell outside the 2 heating chambers are respectively provided with a hot air outlet; the middle part of the shell between the 2 cooling chambers is provided with a cold air inlet, and the corresponding sides of the shell outside the 2 cooling chambers are respectively provided with a cold air outlet.
2. The integrated device for purifying, adsorbing and desorbing active coke desulfurization and denitrification flue gas as recited in claim 1, wherein the 2 denitrification reaction chambers are symmetrically arranged on both sides of the center line of the shell, and the 2 denitrification reaction chambers, the 2 desulfurization reaction chambers and the 2 desorption reaction chambers are connected in sequence from top to bottom in a one-to-one correspondence manner.
3. The integrated device for purifying, adsorbing and desorbing active coke, for removing sulfur and nitrogen from flue gas as claimed in claim 1, wherein the outer surface of the shell is provided with a heat insulating layer, and the shell is internally provided with a temperature detecting device.
4. The integrated device for purifying, adsorbing and desorbing activated coke desulfurization and denitrification flue gas as claimed in claim 1, wherein the feeding air-lock valve and the discharging air-lock valve are sealed by inert gas, and the discharging amount of the feeding air-lock valve and the discharging air-lock valve can be adjusted; the feeding air locking valve and the discharging air locking valve are respectively controlled by the control system and the temperature detection device in the shell in an interlocking way.
5. The integrated device for purifying, adsorbing and desorbing activated coke desulfurization and denitrification flue gas as claimed in claim 1, wherein a pneumatic valve or an electric quick-opening valve is respectively arranged on the nitrogen gas nozzle and at the carrier gas inlet, and is interlocked and controlled with a temperature detection device in the shell through a control system.
6. The integrated device for purifying, adsorbing and desorbing active coke desulfurization and denitrification flue gas as recited in claim 1, wherein a shell-and-tube type partition heater is arranged in the heating chamber, an active coke inlet is arranged at the top end of a heat exchange tube of the partition heater, and an active coke outlet is arranged at the bottom end of the heat exchange tube; two ends of the shell of the dividing wall heater are respectively connected with a hot air inlet and a hot air outlet.
7. The integrated device for purifying, adsorbing and desorbing active coke desulfurization and denitrification flue gas as recited in claim 1, wherein a shell-and-tube type partition wall cooler is arranged in the cooling chamber, an active coke inlet is arranged at the top end of a heat exchange tube of the partition wall cooler, and an active coke outlet is arranged at the bottom end of the heat exchange tube; two ends of the shell of the dividing wall cooler are respectively connected with the cold air inlet and the cold air outlet.
8. The integrated device for purifying, adsorbing and desorbing the activated coke, desulfurizing and denitrifying flue gas as claimed in claim 6 or 7, wherein fins are arranged on the outer side of the heat exchange tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020995252.3U CN212492397U (en) | 2020-06-03 | 2020-06-03 | Active burnt SOx/NOx control gas cleaning adsorbs desorption integrated device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020995252.3U CN212492397U (en) | 2020-06-03 | 2020-06-03 | Active burnt SOx/NOx control gas cleaning adsorbs desorption integrated device |
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| CN212492397U true CN212492397U (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020995252.3U Active CN212492397U (en) | 2020-06-03 | 2020-06-03 | Active burnt SOx/NOx control gas cleaning adsorbs desorption integrated device |
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| CN (1) | CN212492397U (en) |
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- 2020-06-03 CN CN202020995252.3U patent/CN212492397U/en active Active
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