CN104671205A - Methanol synthesis system with double conversion furnaces - Google Patents
Methanol synthesis system with double conversion furnaces Download PDFInfo
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- CN104671205A CN104671205A CN201310615506.9A CN201310615506A CN104671205A CN 104671205 A CN104671205 A CN 104671205A CN 201310615506 A CN201310615506 A CN 201310615506A CN 104671205 A CN104671205 A CN 104671205A
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- converter
- heat boiler
- oven
- pipeline
- waste heat
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
The invention discloses a methanol synthesis system with double conversion furnaces and belongs to the technical field of methanol synthesis. The methanol synthesis system is characterized in that a first conversion furnace and a second conversion furnace are arranged in side by side, one furnace is started and the other furnace is spared for use; the tops of the first conversion furnace and the second conversion furnace are provided with pipelines connected with the gas discharging end of a preheating furnace and the gas discharging end of an air-separation oxygen compressor; water on jackets of the first conversion furnace and the second conversion furnace is from a main circulating-water feeding pipe, and circulating water returns to a pipe network; and the bottom of the first conversion furnace is provided with a pipeline connected with a first waste-heat boiler, the bottom of the second converting furnace is provided with a pipeline connected with a second waste-heat boiler, and the first waste-heat boiler and the second waste-heat boiler are respectively provided with an outer steam-conveying main pipe. The methanol synthesis system disclosed by the invention has the advantages that the two conversion furnaces are alternatively used, so that the stopping time can be effectively reduced when the conversion furnaces are maintained and catalysts are replaced, further the methanol yield can be increased and considerable economic benefit can be created.
Description
Technical field
The present invention relates to the system for methanol synthesis of a kind of pair of converter, belong to system for methanol synthesis technical field.
Background technology
Methanol by using coke oven gas workshop section, its process is available gas CO and H becoming methyl alcohol used methane conversion in unstripped gas
2, in reacted reforming gas, methane content controls below 0.5%, after heat exchange cooling, is sent to synthesizing section.Utilize the heat waste heat boiler by-product 3.0MPa middle pressure steam of reforming gas to send pipe network simultaneously.Gas reforming completes in converter, and equipment quality directly affects the seed output and quality of methyl alcohol, and converter is the nucleus equipment of methanol production workshop section.At present, there is converter for some enterprises longer for working time, ageing equipment, the reasons such as misoperation, cause mould material to come off, thermopair burns and burn phenomenon with catalyst, cause repeatedly parking accident.Because converter volume is large, mould material comes off and thermopair burns, and catalyst need be dismantled, the repair time is long, thus causes financial loss.To this, be necessary the deficiency existed for converter maintenance, take measures to be solved.
Summary of the invention
The object of the invention is to the defect overcoming above-mentioned technology, the system for methanol synthesis of a kind of pair of converter is provided, can use be switched when keeping in repair, thus effectively can shorten the repair time, increase economic efficiency.
The system for methanol synthesis of a kind of pair of converter, comprise supply mains, primary waste heat boiler, secondary waste heat boiler on the first converter, the second converter, preheating oven, empty point oxygen compressor, recirculated water return main, recirculated water, send steam manifold, coke(oven)gas preheater and deoxygenation case outside, described first converter and the second converter are arranged side by side, and the first converter, the second converter top are provided with pipeline and are connected with an empty point oxygen compressor outlet side with preheating oven outlet side; On first converter and the second jacket of converter, water carrys out supply mains on self-circulating water, and backwater removes pipe network; Be provided with pipeline bottom first converter to be connected with primary waste heat boiler tube side inlet end, be provided with pipeline bottom second converter to be connected with secondary waste heat boiler tube side inlet end, primary waste heat boiler and secondary waste heat boiler shell side are respectively arranged with and send steam manifold outside, after pressure and temperature reducing, deliver to pipe network.
Further, be provided with oxygen burner with the first converter difference second converter top, and pipeline between preheating oven is provided with the first valve, the pipeline between the second converter top and air separation plant oxygen compressor is provided with the second valve.
Further, on the second jacket of converter water waterborne and recirculated water, supply mains is provided with the 15 valve; Jacket water (J.W.) backwater and recirculated water return main are provided with the 16 valve; The effect of jacket water (J.W.) is to the cooling of converter outer wall, prevents outer wall from burning and leaks.
Further, the import of secondary waste heat boiler shell side is connected with deoxygenation case, is provided with the 14 valve; Outlet is connected with steam pipe system, is provided with the 13 valve; The high-temperature coke furnace gas that the de-salted water of deaeration plant and the second converter export carries out heat exchange, the middle pressure steam of by-product 3.0MPa, and the low-pressure steam 0.6MPa after pressure and temperature reducing send pipe network.
Further, secondary waste heat boiler outlet is connected with the import of coke(oven)gas preheater tube side, carries out heat exchange with the coke(oven)gas from fine de-sulfur workshop section, improves the temperature entering preheating oven coke(oven)gas, saves thermal source.
Further, the second converter and the first converter oxygen pipeline are furnished with the middle pressure steam transforming drum, and object improves the temperature that the next oxygen of Kong Fen workshop section enters converter on the one hand; Prevent converter inside from analysing carbon reaction time on the other hand, and then cause catalyst activity to reduce or inactivation.
Beneficial effect of the present invention is: the system for methanol synthesis of this pair of converter, two converters are used alternatingly, when a converter needs repairing, in several hours, the short circuit that another converter mates is connected, normally can use, effectively shorten the repair time, system for methanol synthesis is made to reach long-term operation, save the plenty of time, improved the output of methyl alcohol, create very large economic benefit.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
Fig. 1 is the structural representation of the embodiment of the present invention.
Number in the figure:
1, recirculated water return main; 2, the first valve; 3, the second valve; 4, the 3rd valve; 5, preheating oven; 6, empty point oxygen compressor; 7, the 4th valve; 8, the first converter; 9, the 5th valve; 10, the 6th valve; 11, the 7th valve; 12, the 8th valve; 13, supply mains on recirculated water; 14, steam manifold is sent outside; 15, coke(oven)gas preheater; 16, the 9th valve; 17, the tenth valve; 18, primary waste heat boiler; 19, the 11 valve; 20, the 12 valve; 21, the 13 valve; 22, secondary waste heat boiler; 23, the 14 valve; 24, deoxygenation case; 25, the 15 valve; 26, the second converter; 27, the 16 valve; 28, the second converter coke(oven)gas short tube (being with supporting flange); 29, the second converter oxygen short tube; 30, secondary waste heat boiler outlet coke(oven)gas pipeline; 31, primary waste heat boiler outlet coke(oven)gas short tube; 32, the first converter oxygen short tube; 33, the first converter coke(oven)gas short tube; 34, drum is transformed.
Embodiment
The system for methanol synthesis of two converters as shown in Figure 1, the first converter 8 and the second converter 26 two stoves are arranged side by side, one open one standby.Newly establish and have the second converter 26 and secondary waste heat boiler 22; Newly-increased pipe fitting has valve first valve 2, second valve the 3, the 12 valve the 20, the 13 valve the 21, the 14 valve the 23, the 15 valve the 25 and the 16 valve 27; Except primary waste heat boiler outlet coke(oven)gas short tube 31, first converter oxygen short tube 32, first converter coke(oven)gas short tube 33, newly-increased pipeline has the second converter coke(oven)gas short tube 28, second converter oxygen short tube 29, coke(oven)gas pipeline, oxygen pipeline, secondary waste heat boiler to export coke(oven)gas pipeline 30, second converter recirculated water water-line and recirculated water return piping.
In system, the first converter 8, second converter 26 top is provided with pipeline and is connected with empty point oxygen compressor 6 outlet side with preheating oven 5 outlet side; On first converter 8 and the second converter 26 chuck, water carrys out supply mains 13 on self-circulating water, and recirculated water backwater removes pipe network; Be provided with pipeline bottom first converter 8 to be connected with primary waste heat boiler 18, be provided with pipeline bottom the second converter 26 and be connected with secondary waste heat boiler 22, primary waste heat boiler 18 and secondary waste heat boiler 22 are respectively arranged with and send steam manifold 14 outside.The import of secondary waste heat boiler 22 shell side is connected with deoxygenation case 24.First converter 8 and the second converter 26 top are connected with and transform drum 34.; Two waste heat boiler tube side outlet sides are connected with coke(oven)gas preheater 15 tube side inlet end.
The 3rd valve 4, the 4th valve 7, the 5th valve 9, the 6th valve 10, the 7th valve 11, the 8th valve 12, the 9th valve 16, the tenth valve the 17, the 11 valve 19 is also provided with, as valve pipe trip switch in system.
Use aborning during the second converter and the second converter coke(oven)gas short tube 28, second converter oxygen short tube 29 is connected with former pipeline with secondary waste heat boiler outlet coke(oven)gas pipeline 30 short circuit flange, corresponding removes the first converter coke(oven)gas short tube 33, first converter oxygen short tube 32 and secondary waste heat boiler outlet coke(oven)gas pipeline 30 short circuit, prevents coke(oven)gas in pipeline from leaking outside and has an accident.When use the first converter, on the contrary operation.
When enabling the second converter 26 in production, secondary waste heat boiler 22 is opened, close the first converter 8 and primary waste heat boiler 18 simultaneously.Coke(oven)gas pipeline, oxygen pipeline are connected with former pipeline with secondary waste heat boiler outlet coke(oven)gas pipeline 30 short tube flange, corresponding removes the first converter coke(oven)gas pipeline, oxygen pipeline and secondary waste heat boiler outlet coke(oven)gas pipeline 30 short tube, prevents high-temperature coke furnace gas in pipeline from leaking outside and has an accident.
When enabling the first converter 8 in production, primary waste heat boiler 18 is opened, close the second converter 26 and secondary waste heat boiler 22 simultaneously.Coke(oven)gas pipeline, oxygen pipeline and primary waste heat boiler 18 are exported coke(oven)gas pipeline short tube flange to be connected with former pipeline, corresponding removes the second converter coke(oven)gas pipeline, oxygen pipeline and primary waste heat boiler outlet coke(oven)gas pipeline short tube, prevents high-temperature coke furnace gas in pipeline from leaking outside and has an accident.
From the coke(oven)gas temperature 350 DEG C of fine de-sulfur, the coke(oven)gas temperature 540 DEG C that bottom pressure 2.3MPa, total sulfur content 0.1ppm and the second converter, waste heat boiler tube side exports carries out heat exchange, for methane conversion becomes carbon monoxide and hydrogen reaction to provide heat.Simultaneously for preventing coke(oven)gas from high temperature analysing carbon reaction, in coke(oven)gas, add the saturation steam of 3.0MPa, steam flow regulates according to the flow of coke(oven)gas.Add the coke(oven)gas after steam and be heated to about 520 DEG C, then after preheating oven 5 is preheated to 660 DEG C, enters the second converter 26 top.With the oxygen temperature 100 DEG C dividing oxygen compressor 6 from sky, pressure 2.5MPa, together enters converter top, in the second converter inside, oxidizing reaction occurs, releases heat.First converter 8 is identical with the second converter 26 production process.Difference is that the second converter 26 top is provided with oxygen burner, and the first conversion furnace roof inside is provided with oxygen distribution ware, and the two is all that oxygen is evenly distributed, and fully reacts.
Claims (4)
1. the system for methanol synthesis of a two converter, comprise supply mains, primary waste heat boiler, secondary waste heat boiler on the first converter, the second converter, preheating oven, empty point oxygen compressor, recirculated water return main, recirculated water, send steam manifold, coke(oven)gas preheater and deoxygenation case outside, it is characterized in that: described first converter and the second converter are arranged side by side, the first converter, the second converter top are provided with pipeline and are connected with an empty point oxygen compressor outlet side with preheating oven outlet side; On first converter and the second jacket of converter, water carrys out supply mains on self-circulating water, and recirculated water backwater removes pipe network; Be provided with pipeline bottom first converter to be connected with primary waste heat boiler tube side inlet end, be provided with pipeline bottom second converter to be connected with secondary waste heat boiler tube side inlet end, primary waste heat boiler and secondary waste heat boiler shell side are respectively arranged with and send steam manifold outside, after pressure and temperature reducing, deliver to pipe network; Two waste heat boiler tube side outlet sides are connected with coke(oven)gas preheater tube side inlet end, and coke(oven)gas is sent to methanol-fueled CLC workshop section after lowering the temperature step by step.
2. the system for methanol synthesis of according to claim 1 pair of converter, is characterized in that: newly establish in described system and have the second converter and secondary waste heat boiler; Newly-increased pipe fitting has valve first valve, the second valve, the 12 valve, the 13 valve, the 14 valve, the 15 valve and the 16 valve; Newly-increased pipeline has coke(oven)gas pipeline, oxygen pipeline, secondary waste heat boiler to export coke(oven)gas pipeline, the second converter recirculated water water-line and recirculated water return piping.
3. the system for methanol synthesis of according to claim 1 pair of converter, is characterized in that: the coke(oven)gas pipeline in described second converter, oxygen pipeline are connected with former pipeline with secondary waste heat boiler outlet coke(oven)gas pipeline short circuit flange.
4. the system for methanol synthesis of according to claim 1 pair of converter, is characterized in that: described second converter burner is furnished with the middle pressure steam of inverting drum, the first converter oxygen pipeline is furnished with the middle pressure steam transforming drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310615506.9A CN104671205A (en) | 2013-11-28 | 2013-11-28 | Methanol synthesis system with double conversion furnaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310615506.9A CN104671205A (en) | 2013-11-28 | 2013-11-28 | Methanol synthesis system with double conversion furnaces |
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| CN104671205A true CN104671205A (en) | 2015-06-03 |
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| CN201310615506.9A Pending CN104671205A (en) | 2013-11-28 | 2013-11-28 | Methanol synthesis system with double conversion furnaces |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0137467A2 (en) * | 1983-10-12 | 1985-04-17 | M.A.N. Technologie GmbH | Process and apparatus for producing synthesis gas |
| CN1390777A (en) * | 2002-07-12 | 2003-01-15 | 庞玉学 | Parellel transfer process for hydrocarbon vapour |
| CN101679158A (en) * | 2007-05-25 | 2010-03-24 | 约翰森·马瑟公开有限公司 | Methanol process |
| CN203545674U (en) * | 2013-11-28 | 2014-04-16 | 七台河宝泰隆甲醇有限公司 | Methanol synthesis system with two reforming furnaces |
-
2013
- 2013-11-28 CN CN201310615506.9A patent/CN104671205A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0137467A2 (en) * | 1983-10-12 | 1985-04-17 | M.A.N. Technologie GmbH | Process and apparatus for producing synthesis gas |
| CN1390777A (en) * | 2002-07-12 | 2003-01-15 | 庞玉学 | Parellel transfer process for hydrocarbon vapour |
| CN101679158A (en) * | 2007-05-25 | 2010-03-24 | 约翰森·马瑟公开有限公司 | Methanol process |
| CN203545674U (en) * | 2013-11-28 | 2014-04-16 | 七台河宝泰隆甲醇有限公司 | Methanol synthesis system with two reforming furnaces |
Non-Patent Citations (2)
| Title |
|---|
| 李建锁等: "《焦炉煤气制甲醇技术》", 31 May 2009 * |
| 潘日芳: "《计算机过程控制技术》", 30 April 1993 * |
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Application publication date: 20150603 |