CN203768044U - Negative-pressure ammonia distilling device - Google Patents
Negative-pressure ammonia distilling device Download PDFInfo
- Publication number
- CN203768044U CN203768044U CN201420139638.9U CN201420139638U CN203768044U CN 203768044 U CN203768044 U CN 203768044U CN 201420139638 U CN201420139638 U CN 201420139638U CN 203768044 U CN203768044 U CN 203768044U
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- CN
- China
- Prior art keywords
- ammonia
- ammonia still
- pump
- negative
- water cooler
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- Expired - Fee Related
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Abstract
The utility model discloses a negative-pressure ammonia distilling device and belongs to an ammonia distilling technology. The device structurally comprises an ammonia distilling tower, a total condenser, an ammonia cooler, a return tank, an ammonia water return pump, a noncondensable gas cooler and a vacuum injection pump, wherein the ammonia distilling tower, the total condenser, the ammonia cooler, the return tank and the ammonia water return pump are sequentially connected; the outlet end of the ammonia water return pump is divided into two paths, one path is connected with the ammonia distilling tower while the other pat is used for feeding outside; the noncondensable gas cooler is arranged at the top of the return tank, the return tank, the noncondensable gas cooler and the vacuum injection pump form a circulating loop, and the vacuum injection pump is further connected with a coal gas pipeline. The device disclosed by the utility model has the characteristics of not only effectively realizing vacuum condition required by negative-pressure ammonia distillation so as to realize the negative-pressure operation, but also improving the quality of ammonia distillation with low operating cost, less labor intensity and the like.
Description
Technical field
The utility model relates to a kind of ammonia still process technology, especially a kind of device of the negative pressure ammonia still process that is widely used in coking, chemical industry.
Background technology
At coking industry, ammonia still process is replaced by negative pressure ammonia still process gradually by normal pressure ammonia still process, and negative pressure ammonia still process distillation heat reduces, obvious energy conservation.According to measuring and calculating, the negative pressure ammonia still process of identical scale is compared with normal pressure ammonia still process, and energy efficient can reach 40%-60%, is extremely conducive to industry energy conservation consumption reduction, reduces costs; Cleaner production, reduces the generation of waste water, and generally, while adopting open steam distillation, a large amount of steam condensates can enter waste water system, increases the weight of the load of biochemical treatment.
Current most negative pressure ammonia evaporation system all adopts high pressure spraying water generates vacuum, also needs some support equipments, ensures the quality of recirculated water.So not only increase facility investment, increased working cost simultaneously.
At present, the solution also not had.
Utility model content
Technical assignment of the present utility model is the device that a kind of negative pressure ammonia still process is provided for above-mentioned deficiency of the prior art, the device of this kind of negative pressure ammonia still process has not only can realize the needed vacuum condition of negative pressure ammonia still process effectively, realize negative-pressure operation, and can put forward the quality of ammonia vapour, compared with using water as circulation fluid device, simple for process, running cost is low, labour intensity is little, is worth feature universal and that promote.
The utility model solves the technical scheme that its technical problem adopts:
A device for negative pressure ammonia still process, it comprises ammonia still, complete condenser, ammonia vapour water cooler, backflash, ammoniacal liquor reflux pump, non-condensable gas water cooler and vacuum jet pump; Described ammonia still, complete condenser, ammonia vapour water cooler, backflash are connected successively with ammoniacal liquor reflux pump; The exit end of described ammoniacal liquor reflux pump divides two-way, and a road is connected with ammonia still, and another road is sent outside; Described backflash top is provided with non-condensable gas water cooler, between described backflash, non-condensable gas water cooler and vacuum jet pump, forms a circulation loop, and described vacuum jet pump is also connected with gas line.
Compared to the prior art the device of a kind of negative pressure ammonia still process of the present utility model, has following outstanding beneficial effect: reduced the investment of equipment, reduced working cost; Solve the wastewater problem that circulation fluid produces; Ammoniacal liquor, as circulation fluid, has absorbed the ammonia in non-condensable gas, has improved the concentration of the ammoniacal liquor of ammonia still process production; Tail gas absorbs flushing liquor without second distillation, saves ammonia still process production cost.
Brief description of the drawings
Accompanying drawing 1 is a kind of device schematic diagram of negative pressure ammonia still process.
Embodiment
With reference to Figure of description 1, the device of a kind of negative pressure ammonia still process of the present utility model is described in detail below.
A device for negative pressure ammonia still process, it comprises ammonia still, complete condenser, ammonia vapour water cooler, backflash, ammoniacal liquor reflux pump, non-condensable gas water cooler and vacuum jet pump; Described ammonia still, complete condenser, ammonia vapour water cooler, backflash are connected successively with ammoniacal liquor reflux pump; The exit end of described ammoniacal liquor reflux pump divides two-way, and a road is connected with ammonia still, and another road is sent outside; Described backflash top is provided with non-condensable gas water cooler, between described backflash, non-condensable gas water cooler and vacuum jet pump, forms a circulation loop, and described vacuum jet pump is also connected with gas line.
Vacuum cycle ammoniacal liquor enters and in ammonia still, carries out ammonia still process, after ammonia still process, ammonia still top ammonia vapour enters complete condenser and ammonia vapour water cooler carries out cooling, the ammoniacal liquor of cooling rear formation enters backflash, in backflash, condensing does not enter non-condensable gas water cooler, after non-condensable gas water cooler cooling, under the suction producing at vacuum jet pump, entering backflash circulates, the ammoniacal liquor part forming in backflash is returned stream through ammoniacal liquor reflux pump, beat and reflux to ammonia still top, a part is sent outside as finished product, a part circulates as the circulation fluid of vacuum jet pump, produce vacuum, maintaining backflash pushes up in negative pressure state, unabsorbed tail gas part is overflowed and is entered gas line.
The vacuum exhaust of ammonia still is extracted out and is entered non-condensable gas water cooler by tower top complete condenser, ammonia vapour water cooler, backflash, enter vacuum jet pump, part ammonia vapour in non-condensable gas is dissolved in and sprays with in cyclic ammonia water, and residual exhaust is before offgas duct enters desulfurization in negative pressure gas line.Vacuum jet pump adopts mother liquor ammonia circulation formula, does circulation fluid with mother liquor aqueous ammonia to replace water.Vacuum cycle ammoniacal liquor send finished product ammonia vessel after reaching setting concentration containing ammonia, supplements afterwards ammoniacal liquor again.
The utility model is specially adapted to the ammonia still process of coking industry remained ammonia and produces strong aqua recovery.This utility model is that the airless injection principle of utilizing mother liquor to produce as circulation fluid realizes the object of ammonia still process low in calories, and then has realized negative pressure ammonia still process, without independent device for recovering tail gas, saves cost of investment and ammonia still process processing cost.Be applicable to negative pressure ammonia still process and reclaim, there is good environmental benefit, economic benefit and social benefit.
Except the technical characterictic described in specification sheets, be the known technology of those skilled in the art.
Claims (1)
1. a device for negative pressure ammonia still process, is characterized in that: comprise ammonia still, complete condenser, ammonia vapour water cooler, backflash, ammoniacal liquor reflux pump, non-condensable gas water cooler and vacuum jet pump; Described ammonia still, complete condenser, ammonia vapour water cooler, backflash are connected successively with ammoniacal liquor reflux pump; The exit end of described ammoniacal liquor reflux pump divides two-way, and a road is connected with ammonia still, and another road is sent outside; Described backflash top is provided with non-condensable gas water cooler, between described backflash, non-condensable gas water cooler and vacuum jet pump, forms a circulation loop, and described vacuum jet pump is also connected with gas line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420139638.9U CN203768044U (en) | 2014-03-26 | 2014-03-26 | Negative-pressure ammonia distilling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420139638.9U CN203768044U (en) | 2014-03-26 | 2014-03-26 | Negative-pressure ammonia distilling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203768044U true CN203768044U (en) | 2014-08-13 |
Family
ID=51285258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420139638.9U Expired - Fee Related CN203768044U (en) | 2014-03-26 | 2014-03-26 | Negative-pressure ammonia distilling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203768044U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103833049A (en) * | 2014-03-26 | 2014-06-04 | 济钢集团有限公司 | Device and process for stilling ammonia with negative pressure |
-
2014
- 2014-03-26 CN CN201420139638.9U patent/CN203768044U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103833049A (en) * | 2014-03-26 | 2014-06-04 | 济钢集团有限公司 | Device and process for stilling ammonia with negative pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20190326 |