CN202803218U - Novel low-pressure methanol synthesis tower - Google Patents
Novel low-pressure methanol synthesis tower Download PDFInfo
- Publication number
- CN202803218U CN202803218U CN 201220391691 CN201220391691U CN202803218U CN 202803218 U CN202803218 U CN 202803218U CN 201220391691 CN201220391691 CN 201220391691 CN 201220391691 U CN201220391691 U CN 201220391691U CN 202803218 U CN202803218 U CN 202803218U
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- cold
- pipe
- wall housing
- wall shell
- methyl alcohol
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Abstract
The utility model discloses a novel low-pressure methanol synthesis tower which comprises a cold-wall shell, an upper seal head and an inner member, wherein the inner member comprises a partition plate, a cold-container pipe and a support ring; the cold-wall shell is connected with the inner member through a flange; the upper seal head is mounted at the top end of the cold-wall shell; a second gas outlet pipe and a gas inlet pipe are arranged on one side of the upper seal head; the upper seal head is connected with the cold-wall shell through a bolt; the cold-container pipe is a U-shaped pipe; the cold-wall shell is a stainless steel cold-wall shell; and a gas distribution pipe of the cold-container pipe is sealed on the partition plate through a stuffing box. The novel low-pressure methanol synthesis tower disclosed by the utility model has the advantages of uniform distribution of incoming gas fluid, high synthesis efficiency, simple and reliable structure, low manufacturing cost and the like, and is suitable for a large chemical methanol synthesis device.
Description
Technical field
The utility model relates to a kind of chemical industry synthetic tower, relates in particular to a kind of New Low Voltage methyl alcohol synthetic reactor.
Background technology
At present low-pressure methanol synthesis tower is applied to also extensively be used in Coal Chemical Industry in the large-scale synthesizing methanol device that natural gas is raw material more, adopts vertical radial synthesizing methanol internals, combination ammonia cooling system refrigeration.
The hydrogen of purification equipment outlet and the high-purity nitrogen that divides acquisition from sky in molar ratio 3:1 mix, mixed synthesizer carries out the heat exchange preheating at synthesic gas compressor to 15.5MPa charging and product, then enter low-pressure methanol synthesis tower, the reaction temperature that goes out ammonia convertor is about 441.5 ℃, ammonia content volume fraction about 20.3%, the heat of tower outlet is used for by-product high-pressure steam, gas behind the recovery heat enters heat exchanger, synthetic compressor outlet gas is carried out preheating, finally be cooled to the liquefied ammonia that enters the ammonia separator separating and condensing after 0 ℃ through water cooler and Ammonia United Chiller With again.Circulating air behind minute ammonia enters the compressor cycle section after Ammonia United Chiller With reclaims cold and air converges, and repeats above-mentioned circulation.The isolated liquefied ammonia of ammonia separator enters flash tank, and simultaneously vacuum flashing goes out dissolved gases, and the liquefied ammonia after the flash distillation is sent to freezing workshop section, and flash distillation gas out is sent to the fuel gas pipe network.
The deficiency of the existence of prior art: traditional low-pressure methanol synthesis tower heat utilization efficiency is low, compare with of the present utility model, consume more steam consumption quantity, synthetic tower is the air-flow skewness in running, and cavitation erosion and the demanding problem of riveting process to synthetic tower brought thus.
Summary of the invention
The purpose of this utility model provides a kind of methyl alcohol combined coefficient the high and high New Low Voltage methyl alcohol synthetic reactor of heat utilization efficiency with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of New Low Voltage methyl alcohol synthetic reactor, comprise cold wall housing, upper cover and internals, described internals comprise dividing plate, cold bile duct and support ring, described cold wall housing is connected by flange with described internals, described upper cover is installed on the top of described cold wall housing, and a side of described upper cover is provided with the second escape pipe and air inlet pipe.
The great majority of existing synthetic tower adopt the way that increases heat exchanger at gaseous phase outlet, to a certain degree can reduce the excessive drawback of heat transfer temperature difference in the synthetic tower, temperature is 320 ℃ to 360 ℃ but synthetic tower is worked off one's feeling vent one's spleen, can not produce 315 ℃ high steam, all used heat of synthesis loop only are used for the boiler feedwater preheating.Can improve conversion ratio by transforming tower internals, change the diameter of axle into to cold shock or inter-stage heat exchange control temperature, simultaneously by-product high-pressure steam.
As preferably of the present utility model, described upper cover and cold wall housing are bolted.
As preferably of the present utility model, described cold bile duct is the U-shaped pipe, can maximum using cooling medium effect, reach optimum heat transfer effect.
As preferably of the present utility model, described cold wall housing is the cold wall housing of stainless steel.Improve the temperature upper limit of synthetic tower, solved the low problem of inlet temperature.
Further, the gas distribution tube of described cold bile duct by packing box seal on described dividing plate.
The beneficial effects of the utility model are:
Use the utility model to solve existing synthetic tower air-flow skewness in running, and cavitation erosion and the demanding problem of riveting process to synthetic tower brought thus, so that the air-flow of synthetic tower evenly distributes, combined coefficient and heat utilization efficiency have been improved, need not fuel and get final product the outer high steam of amount of production, the utility model only need to simply be transformed in the structure of traditional low-pressure methanol synthesis tower, and improvement cost is lower.
Description of drawings
Fig. 1 is the cutaway view of conventional low methyl alcohol synthetic reactor;
Fig. 2 is the cutaway view of the utility model New Low Voltage methyl alcohol synthetic reactor.
Among the figure: 1-master's charging aperture, 2-the first escape pipe, 3-cooling medium inlet, 4-synthetic tower liquid outlet, 5-synthetic tower master escape pipe, 6-heat exchanger, 7-reacts inner bag, the cold wall housing of 8-, 9-ring cavity, the 10-dividing plate, the 11-gas distribution tube, 12-upper cover, 13-air inlet pipe, 14-the second escape pipe, the cold bile duct of 15-.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, in the conventional low methyl alcohol synthetic reactor, material enters from the main charging aperture 1 in synthetic tower bottom, the ring cavity 9 of flowing through, enter respectively by gas distribution tube 11 in the reaction inner bag 7 of internals and react, wherein reactor is isolated into one by one little reactor by dividing plate 10 and reaction inner bag 7, gas phase is by gas distribution tube 11 dividing potential drop in the balanced reaction device in each reactor of entering respectively, with cold wall housing 8 coolings, cold shock circulation supercooling medium import 3 enters respectively in the synthetic tower, leave the synthesis gas of beds after heat exchanger 6 pipe side coolings, enter next process section and continue reaction.320 ℃ to 360 ℃ of the gas temperatures of synthetic tower outlet can not produce 315 ℃ high steam, and all used heat of synthesis loop only are used for the boiler feedwater preheating.
As shown in Figure 2, the utility model comprises cold wall housing 8, upper cover 12 and internals, and described internals comprise dividing plate 10, cold bile duct 15 and support ring (not shown), and cold wall housing 8 is connected by flange with internals.Upper cover 12 is installed on the top of cold wall housing 8, and a side of upper cover 12 is provided with the second escape pipe 14 and air inlet pipe 13.
In this example, upper cover 12 is bolted with cold wall housing 8, and cold bile duct 15 is the U-shaped pipe, and cold wall housing 8 is the cold wall housing of stainless steel, and the gas distribution tube 11 in the cold bile duct 15 is sealed on the dividing plate 10 by the stuffing-box (not shown).
In order to improve heat utilization efficiency, reclaim the synthetic used heat of synthetic tower, need control outlet gas phase greater than 425 ℃, original design is the axial catalyst bed, realize temperature control by cold shock, can improve conversion ratio by transforming tower internals, transform the diameter of axle as to cold shock or inter-stage heat exchange control temperature.Lay down the upper top cover on cold wall housing 8 flanges, unload internal exchanger 6.Replace original flange top with the upper cover 12 that individual band is taken over mouthful, inner with gas distributor so that the outlet gas phase be evenly distributed.The conversion ratio of feed mode, temperature control, catalyst is constant, returns from external heat exchanger behind the unstripped gas after the preheating, enters the first catalyst bed.Improved outlet gas phase can enter respectively pressure cooker by air inlet pipe 13 and the second escape pipe 14, can be used as to produce high steam.
Claims (5)
1. New Low Voltage methyl alcohol synthetic reactor, comprise cold wall housing, upper cover and internals, described internals comprise dividing plate, cold bile duct and support ring, described cold wall housing is connected by flange with described internals, it is characterized in that: described upper cover is installed on the top of described cold wall housing, and a side of described upper cover is provided with the second escape pipe and air inlet pipe.
2. a kind of New Low Voltage methyl alcohol synthetic reactor according to claim 1, it is characterized in that: the described upper cover of the exterior catalyst of this cold tube bag and described cold wall housing are bolted.
3. a kind of New Low Voltage methyl alcohol synthetic reactor according to claim 1, it is characterized in that: described cold bile duct is the U-shaped pipe.
4. a kind of New Low Voltage methyl alcohol synthetic reactor according to claim 1, it is characterized in that: described cold wall housing is the cold wall housing of stainless steel.
5. it is characterized in that according to claim 1 or 3 described a kind of New Low Voltage methyl alcohol synthetic reactors: the gas distribution tube of described cold bile duct by packing box seal on described dividing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220391691 CN202803218U (en) | 2012-08-09 | 2012-08-09 | Novel low-pressure methanol synthesis tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220391691 CN202803218U (en) | 2012-08-09 | 2012-08-09 | Novel low-pressure methanol synthesis tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202803218U true CN202803218U (en) | 2013-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220391691 Expired - Fee Related CN202803218U (en) | 2012-08-09 | 2012-08-09 | Novel low-pressure methanol synthesis tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202803218U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103232321A (en) * | 2013-04-09 | 2013-08-07 | 中石化宁波工程有限公司 | Large-scale methanol synthesis process |
| CN103566835A (en) * | 2012-08-09 | 2014-02-12 | 成都进界科技有限公司 | Novel low-pressure methanol synthesis tower |
| CN103752224A (en) * | 2014-01-02 | 2014-04-30 | 衢州昀睿工业设计有限公司 | Synthesis reactor with spiral preheating passage |
-
2012
- 2012-08-09 CN CN 201220391691 patent/CN202803218U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103566835A (en) * | 2012-08-09 | 2014-02-12 | 成都进界科技有限公司 | Novel low-pressure methanol synthesis tower |
| CN103232321A (en) * | 2013-04-09 | 2013-08-07 | 中石化宁波工程有限公司 | Large-scale methanol synthesis process |
| CN103232321B (en) * | 2013-04-09 | 2014-09-17 | 中石化宁波工程有限公司 | Large-scale methanol synthesis process |
| CN103752224A (en) * | 2014-01-02 | 2014-04-30 | 衢州昀睿工业设计有限公司 | Synthesis reactor with spiral preheating passage |
| CN103752224B (en) * | 2014-01-02 | 2015-05-20 | 衢州昀睿工业设计有限公司 | Synthesis reactor with spiral preheating passage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20130809 |