CN205957766U - Phthalic anhydride reaction product gas cooler - Google Patents
Phthalic anhydride reaction product gas cooler Download PDFInfo
- Publication number
- CN205957766U CN205957766U CN201620820993.1U CN201620820993U CN205957766U CN 205957766 U CN205957766 U CN 205957766U CN 201620820993 U CN201620820993 U CN 201620820993U CN 205957766 U CN205957766 U CN 205957766U
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- heat exchanger
- exchanger tube
- tube
- tube sheet
- housing
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Abstract
The utility model discloses a phthalic anhydride reaction product gas cooler, the casing is connected to form by upper portion curb plate (2), casing bottom plate (9), support connection tube sheet (16), connection tube sheet (13), support tube sheet (18), holds to set up gas feed (1) and gas outlet (6) respectively about the casing, follows the casing axis direction and arranges heat exchange tube (15) of some perpendicularly, welds fin (20) outside heat exchange tube (15), a plurality of heat exchange tube (15) divide into a set ofly, each group heat exchange tube (15) is by left elbow (4) at both ends, right elbow (12) series connection, one side connection access connection pipe case (5) and outlet connecting tube case (3) of connecting tube sheet (16) are being supported in heat exchange tube (15) of establishing ties, it sets up expansion joint (14) to connect tube sheet (13) and support between tube sheet (18). The utility model discloses a coiled pipe fin formula structure, coolant is water, guarantees the safe operation of apparatus for producing in recovery gas body waste heat, and the maintenance is easy.
Description
Technical field
This utility model is related to the device of energy recovery in chemical process, especially for by o-Dimethylbenzene or naphthalene oxygen
Cooling and the energy recycle device of phthalic anhydride production process reaction product gas is prepared in change.
Background technology
Phthalic anhydride is important basic Organic chemical products, and the industrial process of phthalic anhydride mainly has following two technique：Will
Dust-free air after filtration is compressed, preheating, enters reactor, at 400～460 DEG C after mixing with the o-Dimethylbenzene steam of gasification
Carry out oxidation reaction, obtain reaction product gas；Gas phase oxidation is carried out at 350～360 DEG C by naphthalene and air, is reacted
Product gas.Either o-Dimethylbenzene or Fluidized bed technique, the reaction product gas finally obtaining are required for through cooling back
Receive heat and could enter next workshop section.
Reaction product gas chiller is semicircle floating head type tubular cooler at present, and cooling medium is water, semicircle
Floating head type tubular cooler, the weld seam due to all exchanger tubes and tubesheets is all covered by semicircle casing, once weld seam has leakage,
Cannot overhaul, can only whole group change, not only impact produces normal operation, and increases production cost.
Content of the invention
The purpose of this utility model is：A kind of phthalic anhydride reaction product gas cooler is provided, is reclaiming product gas
Ensure the safe operation of whole PA Plant while body waste heat, overcome the safety of semicircle floating head type tubular cooler hidden
Suffer from and a maintenance difficult problem, safe and efficient.
Technical solution of the present utility model is：This cooler includes housing and heat exchanger tube, divides at the left and right end of housing
Not She Zhi reactant gas import and gas outlet, it is characterized in that：Housing axis direction is arranged vertically a number of heat exchanger tube,
Fin is welded outside heat exchanger tube；Some heat exchanger tubes are divided into one group；Each group of heat exchanger tube is connected in series by the elbow at two ends；Series connection
Heat exchanger tube the side of housing respectively connect import and export connect bobbin carriage；The opposite side of housing, between heat exchange pipe bend and housing
Setting expansion joint.
Wherein, protection sleeve pipe is installed in the welding position in heat exchanger tube and case weld.
Wherein, expansion joint bottom is installed blow-off pipe and is connected in housing.
Wherein, heat exchanger tube soaks in a liquid, and heat exchanger tube has certain height from Housing Base, installs grid below heat exchanger tube
Panel.
Wherein, import and export connecting tube lower box part in heat exchanger tube and be respectively mounted drain valve.
Wherein, condensate discharge valve is installed on Housing Base.
Cooler of the present utility model is coil fin structure, and cooling medium is water, and this cooler has the following advantages：
（1）All weld seams of heat exchanger tube, all outside housing, conveniently check, keep in repair；（2）Protection sleeve pipe, heat exchanger tube have been added on heat exchanger tube
Injury-free with protection heat exchanger tube during Tube-sheet Welding；（3）On cooler, expansion joint is set, reduces thermal (temperature difference) stress；（4）For preventing
Organic gas（As phthalic anhydride）Liquid is tied in expansion joint, expansion joint is provided with blow-off pipe and is connected in housing, housing bottom during driving and parking
Portion adds blowoff valve；（5）Heat exchanger tube has certain height from Housing Base, prevents lime set discharge to be immersed in heat exchanger tube not in time
In liquid；（6）Fill Turbogrid plates below heat exchanger tube, both prevented gas short circuit, and be conducive to condensed fluid to fall again；（7）Weld on heat exchanger tube
There is fin to improve heat transfer effect, reduce cooler floor space.
Brief description
Fig. 1 is structural representation front view of the present utility model.
Fig. 2 is structural representation left view of the present utility model.
Fig. 3 is heat exchange sealing of tube schematic diagram of the present utility model.
In figure：1 gas feed, 2 upper side panel, 3 outlet connecting pipe casees, 4 left elbows, 5 inlet connecting branch casees, 6 gases
Outlet, 7 inlet connecting branch case drain valves, 8 condensate discharge valves, 9 Housing Base, 10 Turbogrid plates, 11 outlet connecting pipe casees
Drain valve, 12 right elbows, 13 connection tube sheets, 14 expansion joints, 15 heat exchanger tubes, 16 support connection tube sheets, 17 blow-off pipes, 18
Stay tube plate, 19 protection sleeve pipes, 20 fins.
Specific embodiment
Technical solution of the present utility model is described below in conjunction with the accompanying drawings it should be appreciated that this reality solely for the purpose of illustration
With new, rather than limit scope of the present utility model by any way.In order to describe simplicity, omit conventional on pipeline in explanation
Valve, the conventional mouth of pipe on storage tank, manhole, instrumentation tap, the adnexa such as bearing, the those skilled in the art of the industry can basis
Needs are designed, and the those of ordinary skill of the industry can also many modifications may be made and improves, and such as pipe-connecting mode, to gas
Flow direction and the mouth of pipe are adjusted, and all these modifications, adjustment, improvement are regarded as protection domain of the present utility model.
As shown in Figure 1, 2, 3, this cooler includes housing and heat exchanger tube, is respectively provided with gas feed at the left and right end of housing
1 and gas outlet 6, it is characterized in that：Housing is connected tube sheet 16, is connected tube sheet 13, props up by upper side panel 2, Housing Base 9, support
Stay tube plate 18 connects composition, is arranged vertically a number of heat exchanger tube 15, heat exchanger tube 15 outside welding wing along housing axis direction
Piece 20；Some heat exchanger tubes 15 are divided into one group；Each group of heat exchanger tube 15 is connected in series by the left elbow 4 at two ends, right elbow 12；String
The heat exchanger tube 15 of connection is supporting the side connection inlet connecting branch case 5 connecting tube sheet 16 and outlet connecting pipe case 3；Connect tube sheet 13
And support and expansion joint 14 is set between tube sheet 18.
Wherein, heat exchanger tube 15 with support is connected tube sheet 16 weld welding position, heat exchanger tube 15 be connected tube sheet 13
The welding position of welding is respectively mounted protection sleeve pipe 19.
Wherein, expansion joint 14 bottom is provided with blow-off pipe 17 and is connected in housing, and Housing Base 9 is provided with condensate discharge valve
8.
Wherein, heat exchanger tube 15 soaks in a liquid, and heat exchanger tube 15 has certain height from Housing Base 9, under heat exchanger tube 15
Turbogrid plates 10 are installed by side.
Wherein, the bottom in inlet connecting branch case 5, outlet connecting pipe case 3 is respectively equipped with inlet connecting branch case drain valve 7 and
Outlet connecting pipe case 11.
Claims (5)
1. phthalic anhydride reaction product gas cooler, this cooler includes housing and heat exchanger tube, is respectively provided with the left and right end of housing
Gas feed（1）And gas outlet（6）, it is characterized in that：Housing is by upper side panel（2）, Housing Base（9）, support connect tube sheet
（16）, connect tube sheet（13）, support tube sheet（18）Connect composition, be arranged vertically a number of heat exchanger tube along housing axis direction
（15）, heat exchanger tube（15）Outside welding fin（20）；Some heat exchanger tubes（15）It is divided into one group；Each group of heat exchanger tube（15）By two
The left elbow at end（4）, right elbow（12）It is connected in series；The heat exchanger tube of series connection（15）Connect tube sheet supporting（16）Side connect
Inlet connecting branch case（5）With outlet connecting pipe case（3）；Connect tube sheet（13）With support tube sheet（18）Between arrange expansion joint
（14）.
2. phthalic anhydride reaction product gas cooler according to claim 1, is characterized in that：In heat exchanger tube（15）With the company of support
Pipe plate（16）Welding welding position, in heat exchanger tube（15）Be connected tube sheet（13）The welding position of welding is respectively mounted protection
Sleeve pipe（19）.
3. phthalic anhydride reaction product gas cooler according to claim 1, is characterized in that：Expansion joint（14）Bottom is provided with row
Dirty pipe（17）It is connected in housing, Housing Base（9）It is provided with condensate discharge valve（8）.
4. phthalic anhydride reaction product gas cooler according to claim 1, is characterized in that：Heat exchanger tube（15）It is immersed in liquid
In, heat exchanger tube（15）From Housing Base（9）There are certain height, heat exchanger tube（15）Turbogrid plates are installed in lower section（10）.
5. phthalic anhydride reaction product gas cooler according to claim 1, is characterized in that：In inlet connecting branch case（5）, go out
Mouth connects bobbin carriage（3）Bottom be respectively equipped with inlet connecting branch case drain valve（7）With outlet connecting pipe case（11）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620820993.1U CN205957766U (en) | 2016-08-01 | 2016-08-01 | Phthalic anhydride reaction product gas cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620820993.1U CN205957766U (en) | 2016-08-01 | 2016-08-01 | Phthalic anhydride reaction product gas cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205957766U true CN205957766U (en) | 2017-02-15 |
Family
ID=57972371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620820993.1U Active CN205957766U (en) | 2016-08-01 | 2016-08-01 | Phthalic anhydride reaction product gas cooler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205957766U (en) |
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2016
- 2016-08-01 CN CN201620820993.1U patent/CN205957766U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |