CN204874324U - Environmental protection recovery unit of nitre waste water between in production of urea ammonium nitrate solution - Google Patents
Environmental protection recovery unit of nitre waste water between in production of urea ammonium nitrate solution Download PDFInfo
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- CN204874324U CN204874324U CN201520419459.5U CN201520419459U CN204874324U CN 204874324 U CN204874324 U CN 204874324U CN 201520419459 U CN201520419459 U CN 201520419459U CN 204874324 U CN204874324 U CN 204874324U
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- ammonium nitrate
- nitrate solution
- urea ammonium
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- pump
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Abstract
The utility model provides an environmental protection recovery unit of nitre waste water between in production of urea ammonium nitrate solution, including replenishing desalinized water input pipeline, magnesium tail water input pipeline, nitric acid solution input pipeline, complex acid groove, urea ammonium nitrate solution makeup tank, force (forcing) pump and technology basin, the export of the bottom of technology basin through the pipeline with the entry of force (forcing) pump links to each other, the export of force (forcing) pump with link to each other through mending the charging pipe way between urea ammonium nitrate solution makeup tank's the top entry, replenish desalinized water input pipeline with magnesium tail water input pipeline respectively with the top entry of technology basin links to each other, nitric acid solution input pipeline with the upper portion of the lateral wall in complex acid groove links to each other, the export of the bottom in complex acid groove with link to each other through the complex acid pipeline between urea ammonium nitrate solution makeup tank's the top entry. Environmental protection recovery unit, through magnesium tail water input pipeline with magnesium tail water rational utilization, become UAN solution product, reduced pollutant discharge.
Description
Technical field
The utility model belongs to chemical technology field, the environmental protection retrieving arrangement of nitre waste water between especially relating in the production of a kind of UAN solution.
Background technology
Urea ammonium nitrate solution (UreaAmmoniumNitratesolution), being called for short UAN solution, abroad also referred to as nitrogen solution (Nsolution), is formulated by urea, ammonium nitrate and water.UAN solution is a kind of liquid nitrogenous fertilizer of stable, colourless, normal pressure, fertilizer efficiency, energy-conservation, reduce in environmental pollution and economic benefit, be all better than solid-state nitrogenous fertilizer.UAN solution generally adopts normal pressure to produce, by certain density urea soln and ammonium nitrate solution being added in proportion the preparation of UAN solution preparation groove.The UAN solution preparation stage needs the pH value of the dust technology regulator solution adding 30-40wt%, pH value is controlled between 6.5-7.5, the dust technology of 30-40wt% be generally by the nitric acid of 60wt% and de-salted water formulated, the container of preparation is complex acid groove.
UAN solution all has indirect method concentrated nitric acid (between abbreviation nitre) production equipment in producing, and the waste water of this device comprises tower tail water and magnesium tail water two kinds of waste water.Magnesium tail water is after concentration unit, and in waste water, concentration of nitric acid content only has 0.1wt%, generally can directly discharge, but the magnesium tail water of directly discharge causes certain waste; In addition, this waste water ph, between 6-7, containing a small amount of ammonia nitrogen, directly discharges, and has certain pollution.Tower tail water is the dilute nitric acid solution of 20-30wt%, is the intermediate product that a nitre is produced.Between nitre produce in, tower tail water is produced concentrated nitric acid with the dust technology mixing post-heating of 60wt% is concentrated, because the dust technology of 60wt% is by tower dilute tail water, density loss is the nitric acid of about 50wt%, compared with the dilute nitric acid production concentrated nitric acid with 60wt%, more steam can be consumed, production cost significantly increases, but in tower tail water, concentration of nitric acid is high, can not directly discharge, must transform, Appropriate application.
Utility model content
For above-mentioned technical problem, the environmental protection retrieving arrangement of nitre waste water between during the purpose of this utility model is to provide a kind of UAN solution to produce, change waste water is UAN solution product, emissions reduction, reduces the production cost of concentrated nitric acid, increases the output of UAN solution.
The technical solution adopted in the utility model is:
The environmental protection retrieving arrangement of nitre waste water between in a kind of urea ammonium nitrate solution production, comprise supplementary de-salted water intake line, magnesium tail water intake line, salpeter solution intake line, complex acid groove, urea ammonium nitrate solution Preparation tank, force (forcing) pump and technique tank, the outlet at bottom of described technique tank is connected by the entrance of pipeline with described force (forcing) pump, be connected by make up water pipeline between described pressurization pump outlet with the top entry of described urea ammonium nitrate solution Preparation tank, described supplementary de-salted water intake line is connected with the top entry of described technique tank respectively with described magnesium tail water intake line, described salpeter solution intake line is connected with the top of the sidewall of described complex acid groove, the outlet at bottom of described complex acid groove is connected by complex acid pipeline with between the top entry of described urea ammonium nitrate solution Preparation tank.
The environmental protection retrieving arrangement of nitre waste water between in urea ammonium nitrate solution production described in the utility model, wherein, also comprise tower tail water intake line, described tower tail water intake line is connected with the top entry of described complex acid groove.
The environmental protection retrieving arrangement of nitre waste water between in urea ammonium nitrate solution production described in the utility model, wherein, described pressurization pump outlet also seals water transfer line with pump and is connected.
The beneficial effect of the utility model device:
Between in UAN solution production described in the utility model, the environmental protection retrieving arrangement of nitre waste water, by magnesium tail water intake line by magnesium tail water Appropriate application, becomes UAN solution product, decreases disposal of pollutants.
The environmental protection retrieving arrangement of nitre waste water between in UAN solution production described in the utility model, by tower tail water intake line, tower tail water be instead of de-salted water to use, by tower tail water Appropriate application, as the complex acid raw material that UAN solution is produced, decrease the steam consumption producing concentrated nitric acid, production cost declines; And with containing tower tail water and the 60wt% nitric acid dilute nitric acid preparing solution of 20-30wt% dust technology, the time is short, improving productivity.
The environmental protection retrieving arrangement of nitre waste water between in UAN solution production described in the utility model, due to the pump sealing hydromining de-salted water that UAN produces, generally recycles after the discharge of sealing water.The effect of sealing water prevents sealing high temperature friction and corrosion damage, and in the life-span of prolonged mechanical sealing, magnesium tail water is used for sealing water and the supplementary water of product of pump, instead of de-salted water, de-salted water consumption reduces, and production cost reduces obviously.
Accompanying drawing explanation
Fig. 1 be during UAN solution described in the utility model is produced between the structural representation of environmental protection retrieving arrangement of nitre waste water.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Embodiment
As shown in Figure 1, the environmental protection retrieving arrangement of nitre waste water between in a kind of UAN solution production, comprise supplementary de-salted water intake line 1, magnesium tail water intake line 2, tower tail water intake line 3, salpeter solution intake line 4, complex acid groove 5, UAN solution preparation groove 6, force (forcing) pump 7 and technique tank 8, the outlet at bottom of technique tank 8 is connected by the entrance of pipeline with force (forcing) pump 7, be connected by make up water pipeline 10 between the outlet of force (forcing) pump 7 and the top entry of UAN solution preparation groove 6, the outlet of force (forcing) pump 7 also seals water transfer line 9 with pump and is connected, supplement de-salted water intake line 1 to be connected with the top entry of technique tank 8 respectively with magnesium tail water intake line 2, tower tail water intake line 3 is connected with the top entry of complex acid groove 5, salpeter solution intake line 4 is connected with the top of the sidewall of complex acid groove 5, be connected by complex acid pipeline 11 between the outlet at bottom of complex acid groove 5 and the top entry of UAN solution preparation groove 6.
Between in UAN solution production described in the present embodiment, the environmental protection retrieving arrangement of nitre waste water in use; magnesium tail water containing nitric acid 0.1wt% is introduced technique tank 8 by magnesium tail water intake line 2; because water base of this part is neutral; there is no corrodibility; the pump sealing water that can directly produce as UAN solution uses; by force (forcing) pump 7 raised pressure, by pump sealing water transfer line 9, as pump sealing water and the supplementary water of product.Solution after UAN solution preparation completes generally adds the water-content in a small amount of de-salted water adjustment product, this process water can utilize the magnesium tail water containing nitric acid 0.1wt%, namely UAN solution preparation groove 6 is joined by make up water pipeline 10, like this, the magnesium tail water containing nitric acid 0.1wt% is used appropriately and produces UAN solution product.When magnesium tail water is not enough, de-salted water use can be supplemented by supplementing de-salted water intake line 1.Tower tail water 3 containing 20-30wt% nitric acid is joined in complex acid groove 5, then the dust technology of 60wt% is added by salpeter solution intake line 4, configuration proportion is about 1:1, regulates preparation to become the dust technology of 30-40wt% concentration through complex acid groove 5, is used for regulating the pH value of UAN solution.
The Application Example of the environmental protection retrieving arrangement of nitre waste water between in UAN solution production described in the present embodiment:
Preparation UAN solution 100 tons, after being mixed with the ammonium nitrate solution of 95wt% concentration by the urea soln of 70wt% concentration, the pH value of solution is 9.0, and need to add dust technology adjust ph between 6.5-7.5, the dust technology adding 35wt% concentration approximately needs 2 tons.The tower tail water of the nitric acid containing 20-30wt% concentration is introduced in complex acid groove 5, adds the dust technology of 60wt%.Then the dust technology 38wt% prepared is added UAN solution preparation groove 6, by metering, usage quantity is 1.5 tons, and it is 7.1 qualified that pH value is adjusted to.
The UAN solution prepared is through sampling analysis, water-content concentration is 17.5%, in the quality index of product, water-content is for being less than 20wt%, water-content is few, and production cost rises, and can add so maximum the water that total content is 2.5wt%, namely 2.5 tons, shown by under meter, add 2 tons of magnesium tail water, the water-content of product is about 19.5wt%.
Produced by above-mentioned preparation, utilize tower tail water to be 0.75 ton, utilize magnesium tail water 2 tons, the pH value of product is finally 6.75.
Above-described embodiment is only be described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection domain that the utility model claims determine.
Claims (3)
1. the environmental protection retrieving arrangement of nitre waste water between in a urea ammonium nitrate solution production, it is characterized in that: comprise supplementary de-salted water intake line (1), magnesium tail water intake line (2), salpeter solution intake line (4), complex acid groove (5), urea ammonium nitrate solution Preparation tank (6), force (forcing) pump (7) and technique tank (8), the outlet at bottom of described technique tank (8) is connected by the entrance of pipeline with described force (forcing) pump (7), be connected by make up water pipeline (10) between the outlet of described force (forcing) pump (7) and the top entry of described urea ammonium nitrate solution Preparation tank (6), described supplementary de-salted water intake line (1) is connected with the top entry of described technique tank (8) respectively with described magnesium tail water intake line (2), described salpeter solution intake line (4) is connected with the top of the sidewall of described complex acid groove (5), be connected by complex acid pipeline (11) between the outlet at bottom of described complex acid groove (5) and the top entry of described urea ammonium nitrate solution Preparation tank (6).
2. the environmental protection retrieving arrangement of nitre waste water between in urea ammonium nitrate solution production according to claim 1; it is characterized in that: also comprise tower tail water intake line (3), described tower tail water intake line (3) is connected with the top entry of described complex acid groove (5).
3. between in urea ammonium nitrate solution production according to claim 1 and 2, the environmental protection retrieving arrangement of nitre waste water, is characterized in that: the outlet of described force (forcing) pump (7) also seals water transfer line (9) and is connected with pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520419459.5U CN204874324U (en) | 2015-06-17 | 2015-06-17 | Environmental protection recovery unit of nitre waste water between in production of urea ammonium nitrate solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520419459.5U CN204874324U (en) | 2015-06-17 | 2015-06-17 | Environmental protection recovery unit of nitre waste water between in production of urea ammonium nitrate solution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204874324U true CN204874324U (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520419459.5U Expired - Fee Related CN204874324U (en) | 2015-06-17 | 2015-06-17 | Environmental protection recovery unit of nitre waste water between in production of urea ammonium nitrate solution |
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| Country | Link |
|---|---|
| CN (1) | CN204874324U (en) |
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2015
- 2015-06-17 CN CN201520419459.5U patent/CN204874324U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20160617 |
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| CF01 | Termination of patent right due to non-payment of annual fee |