CN1226248C - Light benzol producing process in four serially connected towers - Google Patents
Light benzol producing process in four serially connected towers Download PDFInfo
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- CN1226248C CN1226248C CN 03143984 CN03143984A CN1226248C CN 1226248 C CN1226248 C CN 1226248C CN 03143984 CN03143984 CN 03143984 CN 03143984 A CN03143984 A CN 03143984A CN 1226248 C CN1226248 C CN 1226248C
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- benzol
- benzene
- series connection
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- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The present invention relates to a production technology for light benzol in four towers in series connection, particularly to a production technology for light benzol in four towers in series connection without continuous feeding with tanks by adopting a benzol blowing tower, a benzol tower, a toluene tower and a xylene tower, which belongs to the technical field of purification for mixtures mainly containing hydrocarbon. By adopting the production technology for light benzol in four towers in series connection of the present invention, the loads of the heaters in the benzene tower is lightened, the production and the product quality are stable, and the energy-saving efficiency is more than 20%; simultaneously a series of devices, such as air refrigerating devices, water coolers, oil-water separators, tanks, etc., are saved, and electrical energy, heat energy and waterpower are saved, and thus, the production technology for light benzol in four towers in series connection has favorable energy-saving effects, and the yearly economic benefit is more than one million Yuan; the present invention has few investments and obvious effects, and is an optional and ideal production technology for light benzol in four towers in series connection for each large-sized coke-oven plant.
Description
One, technical field:
The invention belongs to hydrocarbon-containifirst is the field of refinement of master's mixture, relates to a kind of production technique of four towers series connection processing light benzene specifically.
Two, background technology:
At present, domestic large-scale coke-oven plant reclaims the traditional pickling rectifying production technique of the common employing of rectification process of light benzene, promptly adopt benzene tower-toluene tower-diformazan tower-three tower deep fat to connect material manufacturing technique, benzene blowing tower and benzene tower independent operation before the benzene tower, this traditional processing technology has the following disadvantages, the one, the operational path complexity, equipment is various; The 2nd, fail to reach energy-saving and cost-reducing requirement, the energy consumption height.
Three, summary of the invention:
The production technique of the four towers series connection processing light benzene that the objective of the invention is to adopt a kind of benzene blowing tower, benzene tower, toluene tower, benzenol hydrorefining not to have storage tank, continuously feeding midway is to overcome above-mentioned deficiency.
The objective of the invention is to realize by following technical scheme:
A kind of production technique of four towers series connection processing light benzene, be by benzene blowing tower, the benzene tower, toluene tower, benzenol hydrorefining is formed the production technique of four towers series connection processing light benzene, it is characterized in that: the overhead vapours of benzene blowing tower is connected on the benzene tower several 16 layers, 17 layers or 18 layers of tower tray manhole place or near the manhole place of 17 layers of tower tray, caliber keeps original benzene blowing tower tower top outlet gas pipe caliber, benzene column overhead extraction purified petroleum benzin, tower bottoms benzene is residual directly squeezes into toluene tower through hot oil pump, as the toluene tower raw material, toluene cat head extraction toluene, the tower bottoms first is residual squeezes into the raw material of diformazan tower as the diformazan tower through hot oil pump, diformazan column overhead extraction diformazan, regularly discharge the diformazan Residual oil at the bottom of the tower, the benzene blowing tower overhead vapours directly enters the benzene tower, thereby forms four towers series connection novel process.
Adopt the production technique of the present invention's four towers series connection processing light benzene, alleviated benzene tower heater loads, saved electric energy, water energy simultaneously, produce and stablize, constant product quality, energy-saving efficiency is more than 20%; Saved air cooler, water cooler, water-and-oil separator simultaneously, a series of equipment such as storage tank, more than 100 ten thousand yuan of year wound economic benefits, less investment of the present invention, instant effect is the production technique of each large-scale coke-oven plant optional ideal four towers series connection processing light benzene.
Four, description of drawings:
Fig. 1 is traditional processing technology figure;
Fig. 2 is production technique figure of the present invention.
Five, embodiment:
Embodiment:
Draw overhead vapours from the benzene blowing tower cat head and go on the benzene tower several 16 layers, 17 layers or 18 layers of tower tray manhole place or near the manhole place of 17 layers of tower tray, caliber keeps original benzene blowing tower tower top outlet gas pipe caliber, benzene blowing tower is on the basis of an original preheater, newly establish a same preheater, two parallel connections, when the preheater heating efficiency of producing the middle and later periods operation descends, switch to another use, the processing parameter of four towers keeps original process parameter value constant, particularly benzene tower reflux ratio (about 1.5) need not strengthen, during benzene blowing tower row Residual oil, liquid level is not less than 3/4 of liquid level at the bottom of the tower.
Claims (1)
1. a tower is connected and is processed the production technique of light benzene, the production technique of forming four towers series connection processing light benzene by benzene blowing tower, benzene tower, toluene tower, benzenol hydrorefining, it is characterized in that: on benzene tower, toluene tower, the three tower cascade connected basis of diformazan tower, benzene blowing tower is sealed in simultaneously, become four towers series connection continuous production processes, and on benzene blowing tower, be provided with the preheater of two parallel connections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03143984 CN1226248C (en) | 2003-08-07 | 2003-08-07 | Light benzol producing process in four serially connected towers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03143984 CN1226248C (en) | 2003-08-07 | 2003-08-07 | Light benzol producing process in four serially connected towers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1486966A CN1486966A (en) | 2004-04-07 |
| CN1226248C true CN1226248C (en) | 2005-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03143984 Expired - Fee Related CN1226248C (en) | 2003-08-07 | 2003-08-07 | Light benzol producing process in four serially connected towers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1226248C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106278896B (en) * | 2015-06-12 | 2019-09-06 | 中国石油化工股份有限公司 | The method of separating dimethyl carbonate during synthesizing dimethyl oxalate |
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2003
- 2003-08-07 CN CN 03143984 patent/CN1226248C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1486966A (en) | 2004-04-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Baotou Baotou Steel Factory the Inner Mongolia Autonomous Region Queensland coking plant of Baotou Steel Patentee after: NeiMenggu BaoGang GangLian Co., Ltd. Coking Factory Address before: Baotou Baotou Steel Factory the Inner Mongolia Autonomous Region Queensland coking plant of Baotou Steel Patentee before: Coking Plant, Baotou Iron &. Steel Corp. |
|
| C56 | Change in the name or address of the patentee |
Owner name: NEIMENGGU BAOGANG GANGLIAN CO., LTD. COKING FACTOR Free format text: FORMER NAME: BAOGANG COKING FACTORY |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051109 |