CN202744333U - Hydrogen chloride recovery device applied to triethyl phosphate production - Google Patents
Hydrogen chloride recovery device applied to triethyl phosphate production Download PDFInfo
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- CN202744333U CN202744333U CN 201220433729 CN201220433729U CN202744333U CN 202744333 U CN202744333 U CN 202744333U CN 201220433729 CN201220433729 CN 201220433729 CN 201220433729 U CN201220433729 U CN 201220433729U CN 202744333 U CN202744333 U CN 202744333U
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- dilute hydrochloric
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Abstract
The utility model discloses a hydrogen chloride recovery device applied to triethyl phosphate production. Particularly, the hydrogen chloride recovery device comprises a concentrated hydrochloric acid generation device, a diluted hydrochloric acid generation device, a neutralizing device and a water source, wherein the concentrated hydrochloric acid generation device comprises a falling-film tower and a concentrated hydrochloric acid pool; the diluted hydrochloric acid generation device comprises a diluted hydrochloric acid absorption tower, a water scrubbing tower and a diluted hydrochloric acid pool; the neutralizing device comprises a neutralizing tower and an alkaline liquor pool; the concentrated hydrochloric acid pool is connected to the bottom of the falling-film tower through a transmission pipe; the diluted hydrochloric acid pool is respectively connected with the falling-film tower, the diluted hydrochloric acid absorption tower, the diluted hydrochloric acid absorption tower and the water scrubbing tower through four transmission pipes; the top end of the diluted hydrochloric acid absorption tower is connected with the bottom of the water scrubbing tower through a transmission pipe; the top end of the water scrubbing tower is connected with the bottom of the neutralizing tower through a transmission pipe; the water source is connected to the top end of the water scrubbing tower; a tail gas channel is formed at the top end of the neutralizing tower; the alkaline liquor pool is connected to the top end of the neutralizing tower through a transmission pipe; and the alkaline liquor pool is connected to the bottom of the neutralizing tower through a transmission pipe. According to the hydrogen chloride recovery device, a fractional collection device is adopted, so that the absorption of hydrogen chloride in tail gas can be more completed.
Description
Technical field
The utility model relates to a kind of hydrogenchloride retrieving arrangement, relates in particular to be applied to the hydrogenchloride retrieving arrangement that triethyl phosphate is produced, and is mainly used in the device for recovering tail gas technical field that belongs in the Chemical Manufacture.
Background technology
Along with the development of China's synthetic material industry and the continuous expansion of Application Areas, fire retardant has wide market outlook in the every field such as chemical building material, electronic apparatus, communications and transportation, space flight and aviation, household furniture, upholstery, clothing, food, lodging and transportion--basic necessities of life.In addition, the increase of the domain requirements such as coalfield, oil field, forest extinguishing has promoted that also China is fire-retardant, fire-fighting medium production develops faster, and China's fire retardant has developed into the second largest polymer modification additive that is only second to softening agent.Under the situation of seeking environmental protection, safe fire retardant, phosphorus flame retardant without halogenated flame retardant, has overcome the shortcoming of halogenated flame retardant as a kind of effectively, has caused people's common concern.A kind of as in the phosphorus flame retardant series of TEP, at present, in enterprise, seldom has the recycle device for tail gas in the production equipment of TEP, the small part device for recovering tail gas only is to adopt water wash column to absorb, specific absorption is quite low, so caused the wasting of resources, has affected company's benefit.
Summary of the invention
The purpose of this utility model is to solve above-mentioned technical problem, proposes to be applied to the hydrogenchloride retrieving arrangement that triethyl phosphate is produced.
The purpose of this utility model, to be achieved by the following technical programs: be applied to the hydrogenchloride retrieving arrangement that triethyl phosphate is produced, it is characterized in that: described retrieving arrangement is comprised of concentrated hydrochloric acid generating apparatus, dilute hydrochloric acid generating apparatus, neutralising arrangement and water source, described concentrated hydrochloric acid generating apparatus comprises falling-film tower and concentrated hydrochloric acid pond, described dilute hydrochloric acid generating apparatus comprises dilute hydrochloric acid absorption tower, water wash column and dilute hydrochloric acid pond, and described neutralising arrangement comprises neutralizing tower and alkali lye pond; Falling-film tower is provided with inlet mouth, the falling-film tower bottom connects the concentrated hydrochloric acid pond by transfer tube, the dilute hydrochloric acid pond connects respectively falling-film tower top, top, dilute hydrochloric acid absorption tower, bottom, dilute hydrochloric acid absorption tower and water wash column bottom by four transfer tubes, top, dilute hydrochloric acid absorption tower connects the water wash column bottom by transfer tube, the water wash column top connects the neutralizing tower bottom by transfer tube, the water wash column top also is connected with the water source, described neutralizing tower top is provided with exhaust gas channel, and the neutralizing tower top connects the alkali lye pond by transfer tube, and the neutralizing tower bottom connects the alkali lye pond by transfer tube.
Further, described falling-film tower is provided with refrigerating unit.
Further, the transfer tube on described connection falling-film tower top, dilute hydrochloric acid pond and top, dilute hydrochloric acid absorption tower is provided with pump.
Further, the described neutralizing tower top transfer tube that connects the alkali lye pond is provided with pump.
Further, the described dilute hydrochloric acid pond transfer tube that connects the falling-film tower top is provided with flow director.
Further, described concentrated hydrochloric acid pond connects the storage vat by transfer tube, and this transfer tube is provided with pump.
The beneficial effects of the utility model are mainly reflected in: the utility model is applied to the hydrogenchloride retrieving arrangement that triethyl phosphate is produced, and has adopted the substep collection device, so that the hydrogen chloride absorption in the tail gas is more complete.
Description of drawings
Fig. 1 is the structural representation that the utility model is applied to the hydrogenchloride retrieving arrangement of triethyl phosphate production.
Embodiment
Following constipation closes the embodiment accompanying drawing, embodiment of the present utility model is described in further detail, so that technical solutions of the utility model are easier to understand, grasp.
The utility model is when implementing, the preferred version that has comprises: as shown in Figure 1, be applied to the hydrogenchloride retrieving arrangement that triethyl phosphate is produced, especially, retrieving arrangement is comprised of concentrated hydrochloric acid generating apparatus 1, dilute hydrochloric acid generating apparatus 2, neutralising arrangement 3 and water source 4, the concentrated hydrochloric acid generating apparatus comprises falling-film tower 11 and concentrated hydrochloric acid pond 12, and the dilute hydrochloric acid generating apparatus comprises dilute hydrochloric acid absorption tower 21, water wash column 22 and dilute hydrochloric acid pond 23, and neutralising arrangement comprises neutralizing tower 31 and alkali lye pond 32.
Wherein, falling-film tower is provided with inlet mouth 111, the falling-film tower bottom connects the concentrated hydrochloric acid pond by transfer tube, the dilute hydrochloric acid pond connects respectively falling-film tower top, top, dilute hydrochloric acid absorption tower, bottom, dilute hydrochloric acid absorption tower and water wash column bottom by four transfer tubes, top, dilute hydrochloric acid absorption tower connects the water wash column bottom by transfer tube, the water wash column top connects the neutralizing tower bottom by transfer tube, the water wash column top also is connected with the water source, the neutralizing tower top is provided with exhaust gas channel 311, and the neutralizing tower top connects the alkali lye pond by transfer tube, and the neutralizing tower bottom connects the alkali lye pond by transfer tube.
In addition, described falling-film tower is provided with refrigerating unit 112.The transfer tube that the dilute hydrochloric acid pond connects falling-film tower top and top, dilute hydrochloric acid absorption tower is provided with pump 231.The transfer tube that the neutralizing tower top connects the alkali lye pond is provided with pump 321.The transfer tube that the dilute hydrochloric acid pond connects the falling-film tower top is provided with flow director 2311.The concentrated hydrochloric acid pond connects storage vat 5 by transfer tube, and this transfer tube is provided with pump 51.
During implementation, tail gas enters the falling-film tower that is provided with refrigerating unit along inlet mouth, the dilute hydrochloric acid pond enters falling-film tower by flow director control flow, and steam state dilute hydrochloric acid is dissolved in dilute hydrochloric acid generation concentrated hydrochloric acid and enters the concentrated hydrochloric acid pond, and concentrated hydrochloric acid can transfer to vat by the transfer tube that is provided with pump in the concentrated hydrochloric acid pond; Once remaining tail gas enters the dilute hydrochloric acid absorption tower, and a large amount of dilute hydrochloric acid circulation is from top to bottom arranged in the dilute hydrochloric acid absorption tower, and a large amount of dilute hydrochloric acid absorption steam state hydrochloric acid enter the dilute hydrochloric acid pond; The tail gas of quadratic residue enters water wash column, the top of water wash column is connected with the water source, the water source from top to bottom circulates along water wash column, enter the dilute hydrochloric acid pond behind the steam state hydrochloric acid of absorption remnants in the way, wherein the water yield that enters of water wash column equates with the dilute hydrochloric acid inlet of falling-film tower, like this so that in the dilute hydrochloric acid pond dilute hydrochloric acid amount remain unchanged; The tail gas of cubic residue enters neutralizing tower, and the neutralizing tower top connects the alkali lye pond, and alkali lye is circulation from top to bottom in neutralizing tower, and the acidic substance with remnants in the way neutralize; Last tail gas prolongs exhaust gas channel and discharges.
About what aforementioned flow director need to illustrate a bit be: in fact, according to the concentration of the required recovery vitriol oil falling-film tower to be carried out flow control, and accurately control by flow director, this flow director fundamentally is associated with the flow at water source in the water wash column.
Can find out by above-mentioned character express, after the utility model is applied to the hydrogenchloride retrieving arrangement input enforcement of triethyl phosphate production, its beneficial effect is mainly reflected in: the utility model is applied to the hydrogenchloride retrieving arrangement that triethyl phosphate is produced, adopted the substep collection device, so that the hydrogen chloride absorption in the tail gas is more complete.
In addition to the implementation, the utility model can also have other embodiment.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop within the utility model scope required for protection.
Claims (6)
1. be applied to the hydrogenchloride retrieving arrangement that triethyl phosphate is produced, it is characterized in that: described retrieving arrangement is comprised of concentrated hydrochloric acid generating apparatus, dilute hydrochloric acid generating apparatus, neutralising arrangement and water source, described concentrated hydrochloric acid generating apparatus comprises falling-film tower and concentrated hydrochloric acid pond, described dilute hydrochloric acid generating apparatus comprises dilute hydrochloric acid absorption tower, water wash column and dilute hydrochloric acid pond, and described neutralising arrangement comprises neutralizing tower and alkali lye pond; The falling-film tower top is provided with inlet mouth, the falling-film tower bottom connects the concentrated hydrochloric acid pond by transfer tube, the dilute hydrochloric acid pond connects respectively falling-film tower top, top, dilute hydrochloric acid absorption tower, bottom, dilute hydrochloric acid absorption tower and water wash column bottom by four transfer tubes, top, dilute hydrochloric acid absorption tower connects the water wash column bottom by transfer tube, the water wash column top connects the neutralizing tower bottom by transfer tube, the water wash column top also is connected with the water source, described neutralizing tower top is provided with exhaust gas channel, and the neutralizing tower top connects the alkali lye pond by transfer tube, and the neutralizing tower bottom connects the alkali lye pond by transfer tube.
2. according to claim 1ly be applied to the hydrogenchloride retrieving arrangement that triethyl phosphate is produced, it is characterized in that: described falling-film tower is provided with refrigerating unit.
3. according to claim 1ly be applied to the hydrogenchloride retrieving arrangement that triethyl phosphate is produced, it is characterized in that: the transfer tube that described dilute hydrochloric acid pond connects falling-film tower top and top, dilute hydrochloric acid absorption tower is provided with pump.
4. according to claim 1ly be applied to the hydrogenchloride retrieving arrangement that triethyl phosphate is produced, it is characterized in that: the transfer tube that described neutralizing tower top connects the alkali lye pond is provided with pump.
5. according to claim 1 and 2ly be applied to the hydrogenchloride retrieving arrangement that triethyl phosphate is produced, it is characterized in that: the transfer tube that described dilute hydrochloric acid pond connects the falling-film tower top is provided with flow director.
6. according to claim 1ly be applied to the hydrogenchloride retrieving arrangement that triethyl phosphate is produced, it is characterized in that: described concentrated hydrochloric acid pond is connected to the storage vat by transfer tube and pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220433729 CN202744333U (en) | 2012-08-29 | 2012-08-29 | Hydrogen chloride recovery device applied to triethyl phosphate production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220433729 CN202744333U (en) | 2012-08-29 | 2012-08-29 | Hydrogen chloride recovery device applied to triethyl phosphate production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202744333U true CN202744333U (en) | 2013-02-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220433729 Expired - Fee Related CN202744333U (en) | 2012-08-29 | 2012-08-29 | Hydrogen chloride recovery device applied to triethyl phosphate production |
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| Country | Link |
|---|---|
| CN (1) | CN202744333U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110357922A (en) * | 2019-07-03 | 2019-10-22 | 昌和化学新材料(江苏）有限公司 | The processing of triphenyl phosphite based on graphite condenser and tail gas treatment process |
| CN114262258A (en) * | 2021-12-23 | 2022-04-01 | 浙江万盛股份有限公司 | Method for resource preparation of dichloropropanol from impurity-containing phosphate flame retardant industrial byproduct HCl |
-
2012
- 2012-08-29 CN CN 201220433729 patent/CN202744333U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110357922A (en) * | 2019-07-03 | 2019-10-22 | 昌和化学新材料(江苏）有限公司 | The processing of triphenyl phosphite based on graphite condenser and tail gas treatment process |
| CN114262258A (en) * | 2021-12-23 | 2022-04-01 | 浙江万盛股份有限公司 | Method for resource preparation of dichloropropanol from impurity-containing phosphate flame retardant industrial byproduct HCl |
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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: 20130220 Termination date: 20130829 |