CN214148909U - Regeneration tower heat transfer system - Google Patents
Regeneration tower heat transfer system Download PDFInfo
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- CN214148909U CN214148909U CN202022518029.2U CN202022518029U CN214148909U CN 214148909 U CN214148909 U CN 214148909U CN 202022518029 U CN202022518029 U CN 202022518029U CN 214148909 U CN214148909 U CN 214148909U
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Abstract
The utility model provides a regeneration tower heat transfer system, include: the system comprises a hot blast stove, a first heat exchange fan, a second heat exchange fan, a heating heat exchanger, a cold heat exchanger and a second cold heat exchanger, wherein the heating heat exchanger, the cold heat exchanger and the cold heat exchanger are sequentially arranged along a regeneration tower from top to bottom, an outlet of the hot blast stove is communicated with an inlet of the heating heat exchanger, an outlet of the heating heat exchanger is communicated with an inlet of the first heat exchange fan, and the first heat exchangerThe outlet of the hot air blower is communicated with the inlet of the hot air blower, the inlet of the second heat exchange fan is communicated with the atmosphere, the outlet of the second heat exchange fan is communicated with the inlet of the cold heat exchanger, the outlet of the cold heat exchanger is communicated with the inlet of the cold heat exchanger, and the outlet of the cold heat exchanger is communicated with the atmosphere. The utility model discloses can avoid SO2The gas corrosion tube pass improves the stability of the desulfurization and denitrification operation of the active coke.
Description
Technical Field
The utility model relates to a SOx/NOx control technical field, in particular to regenerator column heat transfer system.
Background
The heat exchange system of the regeneration tower for performing desulfurization and denitrification on the activated coke generally comprises a preheating heat exchanger, a heating heat exchanger, a first cooling heat exchanger and a second cooling heat exchanger from top to bottom in sequence. High-temperature flue gas generated after gas combustion of the hot blast stove sequentially enters the heating heat exchanger, the preheating heat exchanger and the cold heat exchanger, then enters the first heat exchange fan and then enters the hot blast stove again, and the high-temperature flue gas heats active coke in tube passes corresponding to the heating heat exchanger and the preheating heat exchanger to 400 ℃ SO that SO is separated from the active coke2And (5) regenerating. Blowing nitrogen from the top of the regeneration tower to isolate the SO in the regeneration tower from oxygen2Gas, and carrying SO by nitrogen2The gas is pumped out of the regeneration tower along with the fan. The second heat exchange fan directly extracts the cold air in the environment, and the cold air in the environment flows into the second heat exchanger, flows out of the outlet of the second heat exchanger and is directly discharged into the atmosphere.
The high-temperature flue gas with the temperature of about 320 ℃ after flowing through the heating heat exchanger and the preheating heat exchanger flows into a cold heat exchanger to cool the active coke with the temperature of about 430 ℃ in a tube pass corresponding to the cold heat exchanger to about 330 ℃. The active coke in the tube pass corresponding to the secondary cooling heat exchanger is cooled by ambient cold airTo below 120 ℃. However, there may be some SO in the activated coke above 250 deg.C2The active coke in the tube pass corresponding to the secondary cooling heat exchanger still has partial SO2And (6) resolving to obtain. The nitrogen protection effect of the active coke in the tube pass corresponding to the secondary cooling heat exchanger is poor, the pumping resistance is large, and SO is generated2SO not being extracted in time due to unsmooth extraction2It is easy to corrode the tube side. The temperature of the discharged active coke is usually higher than 70 ℃, and the active coke is easy to be burned in the air when the temperature is higher than 70 ℃, so that the stability of the desulfurization and denitrification operation of the active coke is seriously influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a regenerator heat transfer system to solve the perishable problem of tube side of current regenerator.
In order to solve the technical problem, the utility model provides a regeneration tower heat transfer system, include: the system comprises a hot blast stove, a first heat exchange fan, a second heat exchange fan, a heating heat exchanger, a cold heat exchanger and a second cold heat exchanger, wherein the heating heat exchanger, the first cold heat exchanger and the second cold heat exchanger are sequentially arranged from top to bottom along a regeneration tower, an outlet of the hot blast stove is communicated with an inlet of the heating heat exchanger, an outlet of the heating heat exchanger is communicated with an inlet of the first heat exchange fan, an outlet of the first heat exchange fan is communicated with an inlet of the hot blast stove, an inlet of the second heat exchange fan is communicated with the atmosphere, an outlet of the second heat exchange fan is communicated with an inlet of the cold heat exchanger, an outlet of the cold heat exchanger is communicated with an inlet of the second cold heat exchanger, and an outlet of the second cold heat exchanger is communicated with the atmosphere.
Optionally, the heat exchanger further comprises a preheating heat exchanger, the preheating heat exchanger is arranged above the heating heat exchanger, an outlet of the heating heat exchanger is communicated with an inlet of the preheating heat exchanger, and an outlet of the preheating heat exchanger is communicated with an inlet of the first heat exchange fan.
Optionally, the heat exchanger further comprises a branch, and the branch is used for communicating an inlet of the second heat exchange fan with an outlet of the second cold heat exchanger.
Optionally, the device further comprises a valve, and the valve is arranged on the branch.
Optionally, the number of the inlets of the heating heat exchangers is two, the number of the outlets of the heating heat exchangers is two, the number of the inlets of the preheating heat exchangers is two, the number of the outlets of the preheating heat exchangers is two, the inlets of the two heating heat exchangers are both communicated with the outlet of the hot blast stove, the outlets of the two heating heat exchangers are respectively communicated with the inlets of the two preheating heat exchangers, and the outlets of the two preheating heat exchangers are communicated with the inlet of the first heat exchange fan.
Optionally, inlets of the two heating heat exchangers are disposed at two sides of the heating heat exchanger, outlets of the two heating heat exchangers are disposed at two sides of the heating heat exchanger, inlets of the two preheating heat exchangers are disposed at two sides of the preheating heat exchanger, and outlets of the two preheating heat exchangers are disposed at two sides of the preheating heat exchanger.
Optionally, the number of the inlets of the second cold heat exchanger is two, the number of the outlets of the second cold heat exchanger is two, the number of the inlets of the first cold heat exchanger is two, the number of the outlets of the first cold heat exchanger is two, the inlets of the two second cold heat exchangers are both communicated with the outlet of the second heat exchange fan, the outlets of the two second cold heat exchangers are respectively communicated with the inlets of the two first cold heat exchangers, and the outlets of the two first cold heat exchangers are communicated with the atmosphere.
Optionally, the inlets of the two second-cold heat exchangers are disposed on two sides of the second-cold heat exchanger, the outlets of the two second-cold heat exchangers are disposed on two sides of the second-cold heat exchanger, the inlets of the two first-cold heat exchangers are disposed on two sides of the first-cold heat exchanger, and the outlets of the two first-cold heat exchangers are disposed on two sides of the first-cold heat exchanger.
The utility model provides a pair of regenerator column heat transfer system has following beneficial effect:
the inlet of the second heat exchange fan is communicated with the atmosphere, the outlet of the second heat exchange fan is communicated with the inlet of the first cold heat exchanger, the outlet of the first cold heat exchanger is communicated with the inlet of the second cold heat exchanger, and the outlet of the first cold heat exchanger is communicated with the inlet of the second cold heat exchangerThe outlet of the second cold heat exchanger is communicated with the atmosphere, SO that the active coke in the tube pass corresponding to the first cold heat exchanger and the second cold heat exchanger can be cooled by the atmosphere, the coke temperature of the active coke entering the tube pass corresponding to the second cold heat exchanger can be controlled below 180 ℃, and SO is prevented from being desorbed from the active coke in the tube pass corresponding to the second cold heat exchanger with poor nitrogen protection effect2The gas corrodes the tube side. Meanwhile, the temperature of the active coke in the tube pass corresponding to the secondary cooling heat exchanger during discharge can be controlled to be about 70 ℃, so that the red coke of the active coke can be avoided, and the stability of the desulfurization and denitrification operation of the active coke can be improved.
Drawings
Figure 1 is the schematic diagram of the regeneration tower heat exchange system of the utility model.
Reference numerals:
100-hot blast stove; 200-a first heat exchange fan; 300-a second heat exchange fan; 400-heating a heat exchanger; 410-inlet of heating heat exchanger; 420-outlet of the heating heat exchanger; 500-a cold heat exchanger; 510-inlet of a cold heat exchanger; 520-outlet of a cold heat exchanger; 600-a secondary cooling heat exchanger; 610-inlet of secondary cooling heat exchanger; 620-outlet of the secondary cooling heat exchanger; 700-preheating a heat exchanger; 710-preheating an inlet of a heat exchanger; 720-outlet of preheat exchanger; 800-branch; 900-valve.
Detailed Description
The heat exchange system of the regeneration tower provided by the present invention is further described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.
The embodiment provides a regenerator heat exchange system. Referring to fig. 1, fig. 1 is a schematic diagram of a heat exchange system of a regeneration tower of the present invention, the heat exchange system of the regeneration tower comprises: the hot blast stove 100, a first heat exchange fan 200, a second heat exchange fan 300, a heating heat exchanger, a first cold heat exchanger and a second cold heat exchanger. The heating heat exchanger, the first cooling heat exchanger and the second cooling heat exchanger are sequentially arranged from top to bottom along the regeneration tower. The outlet of the hot blast stove 100 is communicated with the inlet 410 of the heating heat exchanger, the outlet 420 of the heating heat exchanger is communicated with the inlet of the first heat exchange fan 200, and the outlet of the first heat exchange fan 200 is communicated with the inlet of the hot blast stove 100. The inlet of the second heat exchange fan 300 is communicated with the atmosphere, the outlet of the second heat exchange fan 300 is communicated with the inlet 510 of the first cold heat exchanger, the outlet 520 of the first cold heat exchanger is communicated with the inlet 610 of the second cold heat exchanger, and the outlet 620 of the second cold heat exchanger is communicated with the atmosphere.
Because the outlet of the hot blast stove 100 is communicated with the inlet 410 of the heating heat exchanger, the outlet 420 of the heating heat exchanger is communicated with the inlet of the first heat exchange fan 200, and the outlet of the first heat exchange fan 200 is communicated with the inlet of the hot blast stove 100, the high-temperature flue gas generated by the hot blast stove 100 can be recycled. Because the inlet of the second heat exchange fan 300 is communicated with the atmosphere, the outlet of the second heat exchange fan 300 is communicated with the inlet 510 of the first cold heat exchanger, the outlet 520 of the first cold heat exchanger is communicated with the inlet 610 of the second cold heat exchanger, and the outlet 620 of the second cold heat exchanger is communicated with the atmosphere, the atmosphere can be adopted to cool the active coke in the tube pass corresponding to the first cold heat exchanger and the second cold heat exchanger, SO that the coke temperature of the active coke entering the tube pass corresponding to the second cold heat exchanger can be controlled below 180 ℃, and the active coke in the tube pass corresponding to the second cold heat exchanger with poor nitrogen protection effect can be prevented from resolving SO2The gas corrodes the tube side. Meanwhile, the temperature of the active coke in the tube pass corresponding to the secondary cooling heat exchanger during discharge can be controlled to be about 70 ℃, so that the red coke of the active coke can be avoided, and the stability of the desulfurization and denitrification operation of the active coke can be improved.
The regeneration tower heat exchange system further comprises a preheating heat exchanger, the preheating heat exchanger is arranged above the heating heat exchanger, an outlet 420 of the heating heat exchanger is communicated with an inlet 710 of the preheating heat exchanger, and an outlet 720 of the preheating heat exchanger is communicated with an inlet of the first heat exchange fan 200.
Further, the regeneration tower heat exchange system further comprises a branch 800, and the branch 800 is used for communicating an inlet of the second heat exchange fan 300 with an outlet 620 of the second cold heat exchanger. Thus, the part of the atmosphere flowing into the second heat exchanger is directly discharged into the atmosphere, and the other part of the atmosphere flows back to the second heat exchange fan 300, so that the atmosphere can be recycled.
The regeneration tower heat exchange system further comprises a valve, and the valve is arranged on the branch 800. Thus, when the valve is closed, the atmosphere flowing into the second cold heat exchanger is directly discharged into the atmosphere, when the valve is opened, a part of the atmosphere flowing into the second cold heat exchanger is directly discharged into the atmosphere, and the other part of the atmosphere flows back to the second heat exchange fan 300, so that the atmosphere is recycled.
In particular, the valve may be a butterfly valve.
The hot blast stove comprises two heating heat exchangers and two preheating heat exchangers, wherein the number of inlets 410 of the heating heat exchangers is two, the number of outlets 420 of the heating heat exchangers is two, the number of inlets 710 of the preheating heat exchangers is two, the number of outlets 720 of the preheating heat exchangers is two, the inlets 410 of the two heating heat exchangers are both communicated with the outlet of the hot blast stove 100, the outlets 420 of the two heating heat exchangers are respectively communicated with the inlets 710 of the two preheating heat exchangers, the outlets 720 of the two preheating heat exchangers are communicated with the inlet of the first heat exchange fan 200, and the outlet of the first heat exchange fan 200 is communicated with the inlet of the hot blast stove 100.
The number of the inlets 610 of the two cold heat exchangers is two, the number of the outlets 620 of the two cold heat exchangers is two, the number of the inlets 510 of the one cold heat exchanger is two, the number of the outlets 520 of the one cold heat exchanger is two, the inlets 610 of the two cold heat exchangers are both communicated with the outlet of the second heat exchange fan 300, the outlets 620 of the two cold heat exchangers are respectively communicated with the inlets 510 of the two cold heat exchangers, the outlets 520 of the two cold heat exchangers are communicated with the atmosphere, and the inlet of the second heat exchange fan 300 is communicated with the atmosphere.
The inlets 610 of the two second-cool heat exchangers are disposed at both sides of the second-cool heat exchangers, the outlets 620 of the two second-cool heat exchangers are disposed at both sides of the second-cool heat exchangers, the inlets 510 of the two first-cool heat exchangers are disposed at both sides of the first-cool heat exchangers, and the outlets 520 of the two first-cool heat exchangers are disposed at both sides of the first-cool heat exchangers.
The top of the regeneration tower is provided with a feeding hole, a blanking section is correspondingly formed between the feeding hole and the preheating heat exchanger, the areas of the preheating heat exchanger and the heating heat exchanger are correspondingly formed into a regeneration section, the area of the first cold heat exchanger is correspondingly formed into a pre-cooling section, the area of the second cold heat exchanger is correspondingly formed into a cooling section, the bottom of the regeneration tower is provided with a discharging hole, and a discharging section is correspondingly formed between the discharging hole and the second cold heat exchanger. The active coke with saturated adsorption enters a regeneration tower through a feed inlet, sequentially passes through a blanking section, a regeneration section, a pre-cooling section, a cooling section and a discharging section, and respectively exchanges heat with media in corresponding heat exchangers. The preheating heat exchanger and the heating heat exchanger are filled with high-temperature flue gas discharged by the hot-blast stove 100, so that the temperature of the active coke can be raised to a certain temperature, the adsorbed gas in the active coke can be analyzed, the regeneration of the active coke can be realized, and the high-temperature flue gas after heat exchange is sent into a hearth of the heating furnace. And the second cold heat exchanger and the first cold heat exchanger are sequentially filled with air, so that the temperature of the active coke can be reduced to a certain temperature.
When the regeneration tower heat exchange system works in the embodiment, the active coke enters the tube pass from the feed inlet at the top of the regeneration tower, slowly moves from top to bottom through the blanking section, the regeneration section, the pre-cooling section, the cooling section and the discharging section, and the regenerated active coke is discharged out of the tube pass through the discharging section. The gas is combusted in the hot blast stove 100 to heat the air to about 450 ℃. The high-temperature flue gas enters the heating heat exchanger from the inlet 410 of the heating heat exchanger, and the active coke in the tube pass corresponding to the heating heat exchanger is heated to about 400 ℃. And the high-temperature flue gas after heat exchange in the heating heat exchanger enters the preheating heat exchanger, and the active coke in the tube pass corresponding to the preheating heat exchanger is preheated by the preheating heat exchanger. SO (SO)2Gas followerAnd pumping the protective gas nitrogen blown in from the top of the regeneration tower out of the regeneration tower by a fan. The active coke in the regeneration section enters a pre-cooling section and a cooling section in sequence after being regenerated. The second heat exchange fan 300 blows cold air in the atmosphere into the second heat exchanger and the first heat exchanger in sequence, then discharges the air, cools the active coke in the tube pass corresponding to the second heat exchanger to 70 ℃, and then discharges the active coke into a discharge section, wherein the temperature of the active coke entering the tube pass corresponding to the second heat exchanger is below 180 ℃.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modification and modification made by those skilled in the art according to the above disclosure are all within the scope of the claims.
Claims (8)
1. A regenerator heat exchange system comprising: the system comprises a hot blast stove, a first heat exchange fan, a second heat exchange fan, a heating heat exchanger, a cold heat exchanger and a second cold heat exchanger, wherein the heating heat exchanger, the first cold heat exchanger and the second cold heat exchanger are sequentially arranged from top to bottom along a regeneration tower, an outlet of the hot blast stove is communicated with an inlet of the heating heat exchanger, an outlet of the heating heat exchanger is communicated with an inlet of the first heat exchange fan, an outlet of the first heat exchange fan is communicated with an inlet of the hot blast stove, an inlet of the second heat exchange fan is communicated with the atmosphere, an outlet of the second heat exchange fan is communicated with an inlet of the cold heat exchanger, an outlet of the cold heat exchanger is communicated with an inlet of the second cold heat exchanger, and an outlet of the second cold heat exchanger is communicated with the atmosphere.
2. The regeneration tower heat exchange system of claim 1, further comprising a preheat heat exchanger disposed above the heat exchanger, wherein an outlet of the heat exchanger is in communication with an inlet of the preheat heat exchanger, and an outlet of the preheat heat exchanger is in communication with an inlet of the first heat exchange fan.
3. The regeneration tower heat exchange system of claim 1, further comprising a bypass for communicating an inlet of the second heat exchange fan with an outlet of the second cold heat exchanger.
4. The regeneration tower heat exchange system of claim 3, further comprising a valve disposed on the branch.
5. The regeneration tower heat exchange system according to claim 2, wherein the number of the inlets of the heating heat exchanger is two, the number of the outlets of the heating heat exchanger is two, the number of the inlets of the preheating heat exchanger is two, the number of the outlets of the preheating heat exchanger is two, the inlets of the two heating heat exchangers are both communicated with the outlet of the hot blast stove, the outlets of the two heating heat exchangers are respectively communicated with the inlets of the two preheating heat exchangers, and the outlets of the two preheating heat exchangers are communicated with the inlet of the first heat exchange fan.
6. The regeneration tower heat exchange system of claim 5, wherein inlets of two of the heating heat exchangers are disposed on both sides of the heating heat exchanger, outlets of two of the heating heat exchangers are disposed on both sides of the heating heat exchanger, inlets of two of the preheating heat exchangers are disposed on both sides of the preheating heat exchanger, and outlets of two of the preheating heat exchangers are disposed on both sides of the preheating heat exchanger.
7. The regeneration tower heat exchange system of claim 1, wherein the number of inlets of the second cold heat exchanger is two, the number of outlets of the second cold heat exchanger is two, the number of inlets of the first cold heat exchanger is two, the number of outlets of the first cold heat exchanger is two, the inlets of the two second cold heat exchangers are both communicated with the outlet of the second heat exchange fan, the outlets of the two second cold heat exchangers are respectively communicated with the inlets of the two first cold heat exchangers, and the outlets of the two first cold heat exchangers are communicated with the atmosphere.
8. The regenerator heat exchange system of claim 7 wherein the inlets of two of said two cold heat exchangers are disposed on opposite sides of said two cold heat exchangers, the outlets of two of said two cold heat exchangers are disposed on opposite sides of said two cold heat exchangers, the inlets of two of said one cold heat exchangers are disposed on opposite sides of said one cold heat exchanger, and the outlets of two of said one cold heat exchangers are disposed on opposite sides of said one cold heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022518029.2U CN214148909U (en) | 2020-11-04 | 2020-11-04 | Regeneration tower heat transfer system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022518029.2U CN214148909U (en) | 2020-11-04 | 2020-11-04 | Regeneration tower heat transfer system |
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| Publication Number | Publication Date |
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| CN214148909U true CN214148909U (en) | 2021-09-07 |
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| CN202022518029.2U Active CN214148909U (en) | 2020-11-04 | 2020-11-04 | Regeneration tower heat transfer system |
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| CN (1) | CN214148909U (en) |
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