CN203513280U - Device system for directly producing high-concentration nitric acid by using two-pressure dilute nitric acid device - Google Patents
Device system for directly producing high-concentration nitric acid by using two-pressure dilute nitric acid device Download PDFInfo
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- CN203513280U CN203513280U CN201320538769.XU CN201320538769U CN203513280U CN 203513280 U CN203513280 U CN 203513280U CN 201320538769 U CN201320538769 U CN 201320538769U CN 203513280 U CN203513280 U CN 203513280U
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- pipeline
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- bleaching tower
- nitric acid
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Abstract
The utility model discloses a device system for directly producing high-concentration nitric acid by using a two-pressure dilute nitric acid device. The system comprises an acid condensing pump, an absorption tower, a secondary air cooling tower, a first bleaching tower, a nitrogen oxide compressor, an acid tank and a finished product tank, wherein one side of the absorption tower is connected with the outlet end of the acid condensing pump by virtue of a pipeline; the bottom of the absorption tower is connected with the first bleaching tower by virtue of a pipeline; the top of the first bleaching tower is connected with the nitrogen oxide compressor by virtue of a pipeline; the bottom of the first bleaching tower is connected with the finished product tank through a pipeline; dilute nitric acid is introduced into the inlet of the acid condensing pump. The device system is also provided with a second bleaching tower, wherein the top of the second bleaching tower is connected with the pipeline used for connecting the first bleaching tower and the nitrogen oxide compressor by virtue of a pipeline, and the bottom of the second bleaching tower is connected with the upper part of the sidewall of the acid tank by virtue of a pipeline. According to the technical scheme, acid pollution is avoided, and continuous production is ensured.
Description
Technical field
The utility model belongs to chemical technique field, and more particularly, the utility model relates to the apparatus system of a kind of pair of rare nitric acid plant direct production of platen press high density nitric acid.
Background technology
Prior art is produced 68% nitric acid and is generally taked 60% rare nitric acid and 98% concentrated nitric acid mixed preparing, in process for preparation, not only produces large calorimetric, simultaneously HNO
3be decomposed into NO
2and water, NO
2form acid mist with water and be difficult to reclaim, again contaminate environment; A small amount of NO
2be dissolved in nitric acid and form yellow acid, adopt gas blower to bleach, form again acid mist, form secondary pollution; And whole operation length consuming time, cannot consecutive production.
Utility model content
Technical problem to be solved in the utility model be to provide a kind of avoid acid pollution and can quantity-produced the apparatus system of the two rare nitric acid plant direct production of platen press high density nitric acid.
To achieve these goals, the technical scheme that the utility model is taked is: the apparatus system of the rare nitric acid plant direct production of a kind of pair of platen press high density nitric acid providing, comprise condensation acid pump, absorption tower, secondary air cooling tower, the first bleaching tower, nitrogen oxide gas compressor, acid tank and finished pot, one side on absorption tower is connected with condensation acid pump discharge end by pipeline, the bottom on absorption tower is connected with the first bleaching tower by pipeline, the top of the first bleaching tower is connected with nitrogen oxide gas compressor by pipeline, the bottom of the first bleaching tower is connected with finished pot by pipeline, the entrance of condensation acid pump passes into rare nitric acid, apparatus system is also provided with the second bleaching tower, the top of the second bleaching tower connects with the pipeline that the first bleaching tower is connected nitrogen oxide gas compressor by pipeline, the bottom of the second bleaching tower is connected with the top of sour pot sidewall by pipeline, the second bleaching tower sidewall upper is connected with condensation acid pump outlet end by pipeline, the pipeline of the second bleaching tower sidewall upper is also provided with flow control valve, the lower end of the second described bleaching tower sidewall is connected with the sidewall of the first bleaching tower by pipeline, on pipeline, be also provided with air flow rate adjustment valve.
The apparatus system of the rare nitric acid plant direct production of a kind of pair of platen press provided by the utility model high density nitric acid, secondary air cooling tower is connected with the first bleaching tower by pipeline, the pipeline UNICOM that connecting tube is connected with the lower end of the second bleaching tower sidewall and the sidewall of the first bleaching tower.
The apparatus system of the rare nitric acid plant direct production of a kind of pair of platen press provided by the utility model high density nitric acid, is also provided with densitometer on the tank connected pipeline of the first bleaching tower and finished product.
The apparatus system of the rare nitric acid plant direct production of a kind of pair of platen press provided by the utility model high density nitric acid, the top on absorption tower is provided with tail gas discharging pipe, the upper end of absorption tower sidewall is provided with process water unicom pipeline, and the lower end of absorption tower sidewall passes into nitrogenous oxidizing gas by pipeline.
The apparatus system of the rare nitric acid plant direct production of the two platen presses high density nitric acid that the technical solution of the utility model provides, comprise condensation acid pump, absorption tower, secondary air cooling tower, the first bleaching tower, nitrogen oxide gas compressor, acid tank and finished pot, one side on absorption tower is connected with condensation acid pump discharge end by pipeline, the bottom on absorption tower is connected with the first bleaching tower by pipeline, the top of the first bleaching tower is connected with nitrogen oxide gas compressor by pipeline, the bottom of the first bleaching tower is connected with finished pot by pipeline, the entrance of condensation acid pump passes into rare nitric acid, apparatus system is also provided with the second bleaching tower, the top of the second bleaching tower connects with the pipeline that the first bleaching tower is connected nitrogen oxide gas compressor by pipeline, the bottom of the second bleaching tower is connected with the sidewall of sour tank by pipeline, the second bleaching tower sidewall upper is connected with condensation acid pump outlet end by pipeline, the pipeline of the second bleaching tower sidewall upper is also provided with flow control valve, the lower end of the second described bleaching tower sidewall is connected with the sidewall of the first bleaching tower by pipeline, on pipeline, be also provided with air flow rate adjustment valve, adopt the technical solution of the utility model, in existing production system, increase and use the second bleaching tower, reduce the rare nitric acid amount into absorption tower, other materials that enter absorption tower are constant, can improve the concentration of nitric acid that absorption tower, at the bottom of the first bleaching tower, obtain 68% acid, increase and use the second bleaching tower, 37.9% rare nitric acid of extracting out enter remove 804# acid tank after the second bleaching tower bleaching in old ammonium nitrate and, bottom, absorption tower 68% nitric acid out enters the qualified final product storehouse finished pot that goes of the first bleaching tower bleaching post analysis, substandard product Qu Jian nitre workshop section's diluted acid tank or 804# diluted acid tank, former bleaching air divides two parts, and a part is as the bleaching air of the second bleaching tower, and a part is as the bleaching air of the first bleaching tower, and the bleaching air containing NOx of two bleaching tower top discharges returns nitrogen oxide gas compressor together.The material import and export of the second bleaching tower all arranges valve, and the newly-increased bleaching tower of valve-off excision can recover former operating mode and produce.
Secondary air cooling tower is connected with the first bleaching tower by pipeline, and the pipeline UNICOM that connecting tube is connected with the lower end of the second bleaching tower sidewall and the sidewall of the first bleaching tower guarantees using and distributing of bleaching air; On the tank connected pipeline of the first bleaching tower and finished product, be also provided with densitometer, convenient concentration of observing at any time the nitric acid that enters finished pot; The top on absorption tower is provided with tail gas discharging pipe, and the upper end of absorption tower sidewall is provided with process water unicom pipeline, and the lower end of absorption tower sidewall passes into nitrogenous oxidizing gas by pipeline, and the existing bleaching air of this programme use device, does not need to consume in addition process air; Simultaneously bleaching tower outlet goes to absorption tower to enter relieving haperacidity flow process after returning nitrogen oxide gas compressor pressurization containing the bleaching air of NOx, has not only reclaimed the NOx in tail gas, and has not needed to increase in addition the environmental issue that tail gas treatment device has just solved exhaust emissions.
Below with reference to drawings and Examples, the utility model is described in detail.
Accompanying drawing explanation
Below the expressed content of each width accompanying drawing of this specification sheets and the mark in figure are briefly described:
Fig. 1 is the schematic diagram of the apparatus system of the rare nitric acid plant direct production of a kind of pair of platen press of the utility model high density nitric acid.
In figure, be labeled as: 1, condensation acid pump; 2, absorption tower; 3, secondary air cooling tower; 4, the first bleaching tower; 5, finished pot; 6, nitrogen oxide gas compressor; 7, the second bleaching tower; 8, sour tank; 9, flow control valve; 10, air flow rate adjustment valve; 11, densitometer; 12, tail gas discharging pipe; 13, process water unicom pipeline.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, to embodiment of the present utility model as the effect of the mutual alignment between the shape of each related member, structure, each several part and annexation, each several part and principle of work, manufacturing process and operation using method etc., be described in further detail, with help those skilled in the art to utility model of the present utility model conceive, technical scheme has more complete, accurate and deep understanding.
Fig. 1 is the schematic diagram of the apparatus system of the rare nitric acid plant direct production of a kind of pair of platen press of the utility model high density nitric acid, the apparatus system of the rare nitric acid plant direct production of a kind of pair of platen press of the utility model high density nitric acid as shown in the figure, comprise condensation acid pump 1, absorption tower 2, secondary air cooling tower 3, the first bleaching tower 4, nitrogen oxide gas compressor 6, acid tank 8 and finished pot 5, one side on absorption tower 2 is connected with condensation acid pump 1 exit end by pipeline, the bottom on absorption tower 2 is connected with the first bleaching tower 4 by pipeline, the top of the first bleaching tower 4 is connected with nitrogen oxide gas compressor 6 by pipeline, the bottom of the first bleaching tower 4 is connected with finished pot 5 by pipeline, the entrance of condensation acid pump 1 passes into rare nitric acid, apparatus system is also provided with the second bleaching tower 7, the top of the second bleaching tower 7 connects with the pipeline that the first bleaching tower 4 is connected nitrogen oxide gas compressor 6 by pipeline, the bottom of the second bleaching tower 7 is connected with the top of sour tank 8 sidewalls by pipeline, the second bleaching tower 7 sidewall upper are connected with the exit end of condensation acid pump 1 by pipeline, the pipeline of the second bleaching tower 7 sidewall upper is also provided with flow control valve 9, the lower end of the second bleaching tower 7 sidewalls is connected with the sidewall of the first bleaching tower 4 by pipeline, on pipeline, be also provided with air flow rate adjustment valve 10, secondary air cooling tower 3 is connected with the first bleaching tower 4 by pipeline, the pipeline UNICOM that connecting tube is connected with second lower end of bleaching tower 7 sidewalls and the sidewall of the first bleaching tower 4, on the pipeline that the first bleaching tower 4 is connected with finished pot 5, be also provided with densitometer 11, the top on absorption tower 2 is provided with tail gas discharging pipe 12, and the upper end of absorption tower 2 sidewalls is provided with process water unicom pipeline 13, and the lower end of absorption tower 2 sidewalls passes into nitrogenous oxidizing gas by pipeline.
The apparatus system of the rare nitric acid plant direct production of the two platen presses high density nitric acid that the technical solution of the utility model provides, comprise condensation acid pump 1, absorption tower 2, secondary air cooling tower 3, the first bleaching tower 4, nitrogen oxide gas compressor 6, acid tank 8 and finished pot 5, one side on absorption tower 2 is connected with condensation acid pump 1 exit end by pipeline, the bottom on absorption tower 2 is connected with the first bleaching tower 4 by pipeline, the top of the first bleaching tower 4 is connected with nitrogen oxide gas compressor 6 by pipeline, the bottom of the first bleaching tower 4 is connected with finished pot 5 by pipeline, the entrance of condensation acid pump 1 passes into rare nitric acid, apparatus system is also provided with the second bleaching tower 7, the top of the second bleaching tower 7 connects with the pipeline that the first bleaching tower 4 is connected nitrogen oxide gas compressor 6 by pipeline, the bottom of the second bleaching tower 7 is connected with the sidewall of sour tank 8 by pipeline, the second bleaching tower 7 sidewall upper are connected with the exit end of condensation acid pump 1 by pipeline, the pipeline of the second bleaching tower 7 sidewall upper is also provided with flow control valve 9, the lower end of the second bleaching tower 7 sidewalls is connected with the sidewall of the first bleaching tower 4 by pipeline, on pipeline, be also provided with air flow rate adjustment valve 10, adopt the technical solution of the utility model, in existing production system, increase and use the second bleaching tower 7, reduce into absorption tower by rare nitric acid amount of 2, other materials that enter absorption tower 2 are constant, can improve the concentration of nitric acid that absorption tower 2, at first 4 ends of bleaching tower, obtain 68% acid, increase and use the second bleaching tower 7,37.9% rare nitric acid of extracting out enter remove 804# acid tank 8 after the second bleaching tower 7 bleachings in old ammonium nitrate and, 2 bottoms, absorption tower, 68% nitric acid out enters the qualified final product storehouse finished pot 5 that goes of the first bleaching tower 4 bleaching post analysis, substandard product Qu Jian nitre workshop section's diluted acid tank or 804# diluted acid tank 8, former bleaching air divides two parts, and a part is as the bleaching air of the second bleaching tower 7, and a part is as the bleaching air of the first bleaching tower 4, and the bleaching air containing NOx of two bleaching tower top discharges returns nitrogen oxide gas compressor 6 together.The material import and export of the second bleaching tower 7 all arranges valve, and the newly-increased bleaching tower of valve-off excision can recover former operating mode and produce.
Secondary air cooling tower is connected with the first bleaching tower 4 by pipeline, and the pipeline UNICOM that connecting tube is connected with second lower end of bleaching tower 7 sidewalls and the sidewall of the first bleaching tower 4 guarantees using and distributing of bleaching air; On the first bleaching tower 4 and the tank connected pipeline of finished product, be also provided with densitometer 11, convenient concentration of observing at any time the nitric acid that enters finished pot 5; The top on absorption tower 2 is provided with tail gas discharging pipe 12, the upper end of absorption tower 2 sidewalls is provided with process water unicom pipeline 13, the lower end of absorption tower 2 sidewalls passes into nitrogenous oxidizing gas by pipeline, and the existing bleaching air of this programme use device, does not need to consume in addition process air; Simultaneously bleaching tower outlet goes to absorption tower 2 to enter relieving haperacidity flow process after returning nitrogen oxide gas compressor 6 pressurizations containing the bleaching air of NOx, has not only reclaimed the NOx in tail gas, and has not needed to increase in addition the environmental issue that tail gas treatment device has just solved exhaust emissions.
By reference to the accompanying drawings the utility model is exemplarily described above; obviously the utility model specific implementation is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or without improving, design of the present utility model and technical scheme are directly applied to other occasion, all within protection domain of the present utility model.
Claims (4)
1. the apparatus system of the two rare nitric acid plant direct production of platen press high density nitric acid, comprise condensation acid pump, absorption tower, secondary air cooling tower, the first bleaching tower, nitrogen oxide gas compressor, acid tank and finished pot, one side on absorption tower is connected with condensation acid pump discharge end by pipeline, the bottom on absorption tower is connected with the first bleaching tower by pipeline, the top of the first bleaching tower is connected with nitrogen oxide gas compressor by pipeline, the bottom of the first bleaching tower is connected with finished pot by pipeline, the entrance of condensation acid pump passes into rare nitric acid, it is characterized in that: apparatus system is also provided with the second bleaching tower, the top of the second bleaching tower connects with the pipeline that the first bleaching tower is connected nitrogen oxide gas compressor by pipeline, the bottom of the second bleaching tower is connected with the top of sour pot sidewall by pipeline, the second bleaching tower sidewall upper is connected with condensation acid pump outlet end by pipeline, the pipeline of the second bleaching tower sidewall upper is also provided with flow control valve, the lower end of the second described bleaching tower sidewall is connected with the sidewall of the first bleaching tower by pipeline, on pipeline, be also provided with air flow rate adjustment valve.
2. according to the apparatus system of the rare nitric acid plant direct production of a kind of pair of platen press claimed in claim 1 high density nitric acid, it is characterized in that: described secondary air cooling tower is connected with the first bleaching tower by pipeline the pipeline UNICOM that connecting tube is connected with the lower end of the second bleaching tower sidewall and the sidewall of the first bleaching tower.
3. according to the apparatus system of the rare nitric acid plant direct production of a kind of pair of platen press claimed in claim 1 high density nitric acid, it is characterized in that: on the first described bleaching tower and the tank connected pipeline of finished product, be also provided with densitometer.
4. according to the apparatus system of the rare nitric acid plant direct production of a kind of pair of platen press claimed in claim 1 high density nitric acid, it is characterized in that: the top on described absorption tower is provided with tail gas discharging pipe, the upper end of absorption tower sidewall is provided with process water unicom pipeline, and the lower end of absorption tower sidewall passes into nitrogenous oxidizing gas by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320538769.XU CN203513280U (en) | 2013-08-31 | 2013-08-31 | Device system for directly producing high-concentration nitric acid by using two-pressure dilute nitric acid device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320538769.XU CN203513280U (en) | 2013-08-31 | 2013-08-31 | Device system for directly producing high-concentration nitric acid by using two-pressure dilute nitric acid device |
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| Publication Number | Publication Date |
|---|---|
| CN203513280U true CN203513280U (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320538769.XU Expired - Fee Related CN203513280U (en) | 2013-08-31 | 2013-08-31 | Device system for directly producing high-concentration nitric acid by using two-pressure dilute nitric acid device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203513280U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110382412A (en) * | 2017-03-07 | 2019-10-25 | 卡萨尔公司 | For producing the device, correlation technique and remodeling method of nitric acid |
-
2013
- 2013-08-31 CN CN201320538769.XU patent/CN203513280U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110382412A (en) * | 2017-03-07 | 2019-10-25 | 卡萨尔公司 | For producing the device, correlation technique and remodeling method of nitric acid |
| US12006211B2 (en) | 2017-03-07 | 2024-06-11 | Casale Sa | Plant for the production of nitric acid, a related process and method of revamping |
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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: 20140402 Termination date: 20160831 |