CN208204954U - A kind of π type heat recovery boiler - Google Patents
A kind of π type heat recovery boiler Download PDFInfo
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- CN208204954U CN208204954U CN201820401988.6U CN201820401988U CN208204954U CN 208204954 U CN208204954 U CN 208204954U CN 201820401988 U CN201820401988 U CN 201820401988U CN 208204954 U CN208204954 U CN 208204954U
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- heat recovery
- type heat
- recovery boiler
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Abstract
The utility model discloses a kind of π type heat recovery boilers; including sequentially connected left vertical section, horizontal segment and right vertical section; the horizontal segment is located at the top of left vertical section and right vertical section; the left vertical section successively includes: entrance, water conservation section and hyperthermia and superheating section from lower to upper, and the right vertical section successively includes: cryogenic overheating section from top to bottom, evaporator section, high temperature saves coal section, low temperature saves coal section and outlet section.By above-mentioned setting, the problems such as Roof lining for being able to solve traditional horizontal type waste heat boiler is easy to fall off, the easy dust stratification of furnace bottom, heat exchange efficiency are low, high fume temperature, efficiency, safety and the stability of flue gas waste heat recovery are substantially increased.
Description
Technical field
The utility model relates to methanol to prepare alkene (MTO) technical field, more particularly in MTO technique for regenerating cigarette
A kind of π type heat recovery boiler of gas waste heat recycling.
Background technique
The low-carbon alkenes such as ethylene, propylene are important Organic Chemicals, have ten in modern petroleum and chemical industry
Divide important role, traditionally the source of ethylene and propylene is mainly hydrocarbon vapours cracking, and raw material is mainly naphtha, and methanol
The research and development of preparing low-carbon olefins (MTO) process, then be produced from non-oil resource one of chemical products it is completely new
Process route.
In MTO device, catalyst can generate a large amount of coke on surface after multistage pyroreaction, need to enter regenerator
It burns, the coke that surface is adhered to is handled, include a large amount of heat in the flue gas that regenerator generates, if directly
Discharge will cause biggish waste, and also include coke imperfect combustion CO generated in regenerated flue gas, without place
Reason direct emission can damage environment.Conventional way is that high-temperature flue gas is first passed through to CO incinerator progress burning disposal to fall
CO therein, then combustion product gases are passed through horizontal boiler and carry out waste heat recycling.
Traditional horizontal heat recovery boiler has the following problems in the process of running: 1, high-temperature flue gas (is usually above
1200 DEG C) furnace roof is directly washed away, easily cause Roof lining to damage；2, it is accumulated in after the catalyst fines in flue gas and condensate moisture
Boiler bottom be easy to cause at furnace bottom poling and corrodes leakage；3, furnace bottom dust stratification with the time it is more and more thicker, cover a part by
Hot face affects the heat exchange efficiency of boiler, is also difficult to clean off using soot blower；4, vapo(u)rization system difference in height is smaller, and water circulation is dynamic
Power is small, and the reliability of boiler operatiopn is poor.Simultaneously as waste heat boiler operating condition is poor, the heat in flue gas is unable to get
Adequately recycling, causes the production energy consumption of entire MTO device to rise, whole economic efficiency declines therewith.
Utility model content
In view of the above technical problems, it the purpose of the utility model is to provide a kind of π type heat recovery boiler, is able to solve sleeping
The various problems of formula waste heat boiler greatly improve efficiency, safety and the stability of the recycling of regenerated flue gas waste heat.
In order to achieve the above objectives, the technical solution that the utility model uses is: providing a kind of π type waste heat recycling pot
Furnace, including sequentially connected left vertical section, horizontal segment and right vertical section, the horizontal segment are located at left vertical section and right vertical section
Top,
The left vertical section successively includes: entrance, water conservation section and hyperthermia and superheating section from lower to upper,
The right vertical section successively includes: cryogenic overheating section from top to bottom, evaporator section, high temperature saves coal section, low temperature saves coal section
And outlet section.
Preferably, ash bucket is additionally provided with below the outlet section.
Preferably, the inside of the π type heat recovery boiler is using in integral type lining.
Preferably, attemperator is additionally provided between the cryogenic overheating section and hyperthermia and superheating section.
The beneficial effects of the utility model are: temperature has declined to a great extent (usually when 1, flue gas reaches waste heat boiler furnace roof
At 700 DEG C or less), top liner can long period stablize using not easily to fall off；2, using sealing structure in integral type lining, prevent
Reveal hidden danger；3, flue gas vertical direction flows, and furnace bottom will not influence boiler heat exchange without heating surface pipe fitting, dust stratification；4, boiler is whole
Height difference is big, and Water circulation hydrodynamics are big, and boiler operatiopn is reliable；5, boiler overall heat exchange efficiency is high, and exhaust gas temperature is low, improves entire
The efficiency of heating- utilization of MTO device reduces the adverse effect of production energy consumption and high-temperature flue gas to environment.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one preferred embodiment of the utility model；
Fig. 2 is the schematic illustration that the utility model embodiment is used for the recycling of regenerator flue gas waste heat；
The components in the drawings are labeled as follows: 1, π type heat recovery boiler, 2, CO incinerator, and 3, again
Raw device, 4, air, 5, air blower, 6, gas ductwork, 7, chimney, 101, entrance, 102, water conservation section, 103, height
Warm superheat section, 104, horizontal segment, 105, cryogenic overheating section, 106, steaming
Hair section, 107, high temperature province coal section, 108, low temperature province coal section, 109, outlet section, 110, ash bucket, 201, smoke inlet,
202, air intake.
Specific embodiment
The preferred embodiment of the utility model is described in detail with reference to the accompanying drawing, so that the advantages of the utility model
It can be easier to be readily appreciated by one skilled in the art with feature, to make the protection scope of the utility model apparent clear
Define.
Referring to Fig. 1, the utility model embodiment includes:
A kind of π type heat recovery boiler, including sequentially connected left vertical section, horizontal segment 104 and right vertical section, the water
Flat section 104 is located at the top of left vertical section and right vertical section,
The left vertical section successively includes: entrance 101, water conservation section 102 and hyperthermia and superheating section 103 from lower to upper,
The right vertical section successively includes: that cryogenic overheating section 105, evaporator section 106, high temperature save coal section 107, low from top to bottom
Temperature saves coal section 108 and outlet section 109, is additionally provided with ash bucket 110 below the outlet section 109.
The inside of the π type heat recovery boiler uses in integral type lining, and is respectively arranged with temperature between each section of heating surface
Spend sensor.
Referring to Fig. 2, the regenerated flue gas waste heat removal process of the present embodiment includes the following steps:
One, CO incinerator 2 is connected by type metal expansion joint in the entrance 101 of π type heat recovery boiler 1；
Two, air is passed through by air blower 5 from air-source 4 to the air intake 202 of CO incinerator 2, combustion gas is from fuel gas conduit
Net 6 is passed through CO incinerator 2, starts CO incinerator 2 by burning torch；
Three, after CO incinerator 2 starts, regenerated flue gas is passed through to the smoke inlet 201 of CO incinerator 2 from regenerator 3, and cut
Disconnected fuel gas source；
Four, regenerated flue gas after full combustion, into the entrance 101 of π type waste heat boiler 2, successively passes through in CO incinerator 2
Water conservation section 102, hyperthermia and superheating section 103, horizontal segment 104, cryogenic overheating section 105, evaporator section 106, high temperature save coal section 107 and low
Temperature saves after coal section 108 exchanges heat, then through outlet section 109 is expelled to chimney 7, and the powder contained in flue gas then falls into 110 inner product of ash bucket
It is poly-；
Five, the low temperature of waste heat boiler saves coal section 108 and high temperature saves coal section 107 as heat source to the deaerated water in MTO device
Heat temperature raising；
Six, waste heat boiler cryogenic overheating section 105 and hyperthermia and superheating section 103 as heat source to waste heat boiler, external warmer,
The mixed vapour that drum generates in regenerator, which heats up, to be overheated, then is incorporated to system middle pressure steam pipe network；
Seven, the water conservation section 102 of waste heat boiler and evaporator section 106 heat up vapour as heat source to the water in waste heat boiler drum
Change.
The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
Equivalent structure or equivalent flow shift made based on the specification and figures of the utility model, is applied directly or indirectly in
Other related technical areas are also included in the patent protection scope of the utility model.
Claims (4)
1. a kind of π type heat recovery boiler, which is characterized in that including sequentially connected left vertical section, horizontal segment and right vertical section,
The horizontal segment is located at the top of left vertical section and right vertical section,
The left vertical section successively includes: entrance, water conservation section and hyperthermia and superheating section from lower to upper,
The right vertical section successively includes: cryogenic overheating section from top to bottom, evaporator section, high temperature saves coal section, low temperature saves coal section and goes out
Mouth section.
2. a kind of π type heat recovery boiler according to claim 1, which is characterized in that also set up below the outlet section
There is ash bucket.
3. a kind of π type heat recovery boiler according to claim 1, which is characterized in that the π type heat recovery boiler
Inside is using in integral type lining.
4. a kind of π type heat recovery boiler according to claim 1, which is characterized in that the cryogenic overheating section and high temperature
Attemperator is additionally provided between superheat section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820401988.6U CN208204954U (en) | 2018-03-23 | 2018-03-23 | A kind of π type heat recovery boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820401988.6U CN208204954U (en) | 2018-03-23 | 2018-03-23 | A kind of π type heat recovery boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208204954U true CN208204954U (en) | 2018-12-07 |
Family
ID=64528655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820401988.6U Active CN208204954U (en) | 2018-03-23 | 2018-03-23 | A kind of π type heat recovery boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208204954U (en) |
-
2018
- 2018-03-23 CN CN201820401988.6U patent/CN208204954U/en active Active
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