CN204073982U - Urea for vehicle solution process units - Google Patents
Urea for vehicle solution process units Download PDFInfo
- Publication number
- CN204073982U CN204073982U CN201420438828.0U CN201420438828U CN204073982U CN 204073982 U CN204073982 U CN 204073982U CN 201420438828 U CN201420438828 U CN 201420438828U CN 204073982 U CN204073982 U CN 204073982U
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- CN
- China
- Prior art keywords
- urea
- storage tank
- desalted water
- dissolving device
- finished product
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 239000004202 carbamide Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000003860 storage Methods 0.000 claims abstract description 35
- 239000000047 product Substances 0.000 claims abstract description 18
- 239000011265 semifinished product Substances 0.000 claims abstract description 18
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 9
- 238000001764 infiltration Methods 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000002994 raw material Substances 0.000 abstract description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 6
- 238000000605 extraction Methods 0.000 abstract description 4
- 239000003345 natural gas Substances 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 13
- 239000007864 aqueous solution Substances 0.000 description 7
- 239000012498 ultrapure water Substances 0.000 description 7
- 238000001914 filtration Methods 0.000 description 5
- 238000000746 purification Methods 0.000 description 4
- 238000010612 desalination reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910021642 ultra pure water Inorganic materials 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 239000011573 trace mineral Substances 0.000 description 2
- 235000013619 trace mineral Nutrition 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Landscapes
- Physical Water Treatments (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model discloses a kind of urea for vehicle solution process units, comprise the more medium filter connected successively, ultrafiltration, counter-infiltration, RO+EDI main frame, desalted water storage tank, desalted water in described desalted water storage tank is delivered to one-level dissolving device respectively through a desalted water delivery pump, secondary dissolving device, described one-level dissolving device comprises input section and output, described input connects described desalted water delivery pump through a desalted water heater, described output connects a solution cooler successively, grade one filter is to semi-finished product storage tank, described secondary dissolving device connects secondary filter successively, ultraviolet sterilizer is to finished product storage tank.The utility model can reduce the consumption of raw material urea and the pressure to environment thereof greatly, reduces power consumption; With the CO taking natural gas as raw material
2under the prerequisite that the interlock of air-extraction urea plant is produced, its production capacity, quality all have Reliable guarantee.
Description
Technical field
The utility model relates to chemical production equipment field, and particularly relating to natural gas is the CO of raw material
2the interlock of air-extraction urea technique, comprise preparation of high-purity water, whole process closes continuous print AUS32 (urea for vehicle solution) process units.
Background technology
At present, the production method of reported SCR system aqueous solution of urea: the production method being raw material with liquid urea (mostly being 70%-95% solution), contrast solid feed certain tool on raw material utilization rate and wastewater discharge has made marked progress, but, there are two shortcomings in it: one is that material concentration is unstable, need frequent analysis to regulate the proportioning parameter of urea and water, cause production process repeatedly breakpoint, and working strength is very big; Two is that urea liquid itself necessarily contains suitable free ammonia, may thoroughly eliminate hardly under positive pressure, also just cannot products quality guarantee.
Utility model content
For defect and the deficiency of prior art, the purpose of this utility model is to provide a kind of urea for vehicle solution process units.
The technical solution of the utility model is achieved in that a kind of urea for vehicle solution process units, comprise the more medium filter connected successively, ultrafiltration, counter-infiltration, RO+EDI main frame, desalted water storage tank, desalted water in described desalted water storage tank is delivered to one-level dissolving device respectively through a desalted water delivery pump, secondary dissolving device, described one-level dissolving device comprises input section and output, described input connects described desalted water delivery pump through a desalted water heater, described output connects a solution cooler successively, grade one filter is to semi-finished product storage tank, described secondary dissolving device connects secondary filter successively, ultraviolet sterilizer is to finished product storage tank.
Further, described input is also connected with urea melting apparatus to described one-level dissolving device transporting molten urea.
Further, described semi-finished product storage tank connects described secondary dissolving device through a solution transfer pump, and to its conveying semi-finished product solution miscible generation urea liquid again.
As preferably, by demarcation strip, one seal chamber to be divided into upper cavity be described finished product storage tank for middle for described semi-finished product storage tank and described finished product storage tank, and described lower chamber is described semi-finished product storage tank.
Further, described upper cavity and institute's lower chamber are equipped with the barospirator for balancing cavity internal pressure.
Ultrafiltration in above-mentioned is: ultrafiltration adopts hollow fibre filtering new technology, coordinates three grades of pretreated filterings to remove impurities in water from the beginning; Ultrafiltration micropore is less than 0.01 micron, and the harmful substance such as bacterium, iron rust, colloid in the thorough filtering water of energy, retains original trace element and mineral matter in water.
RO+EDI main frame: counter-infiltration and ultra-pure water treatment facility (EDI) combine methods such as adopting pretreatment, reverse osmosis technology, super purification process and rear class process, almost removed completely by conducting medium in water, by water, the colloidal substance of dissociation, gas and organic matter all do not remove the water treatment facilities to very low degree again.
Compared with prior art, the utility model has the advantage of: greatly can reduce the consumption of raw material urea and the pressure to environment thereof, reduce power consumption; With the CO taking natural gas as raw material
2under the prerequisite that the interlock of air-extraction urea plant is produced, simplify packaging, purification process, its production capacity, quality all have Reliable guarantee.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.
Embodiment: specifically refer to Fig. 1, a kind of urea for vehicle solution process units, comprise the more medium filter 1 connected successively for filtering former water, ultrafiltration 2, counter-infiltration 3, RO+EDI main frame 4, desalted water storage tank 5, desalted water in described desalted water storage tank 5 is delivered to one-level dissolving device 7 respectively through a desalted water delivery pump 6, secondary dissolving device 8, described one-level dissolving device 7 comprises input section and output, described input connects described desalted water delivery pump 6 through a desalted water heater 71, described output connects a solution cooler 72 successively, grade one filter 73 to semi-finished product storage tank 74, described secondary dissolving device 8 connects secondary filter 81 successively, ultraviolet sterilizer 82 to finished product storage tank 83.
Further, described input is also connected with urea melting apparatus to described one-level dissolving device 7 transporting molten urea.
Further, described semi-finished product storage tank 74 connects described secondary dissolving device 8 through a solution transfer pump 75, and to its conveying semi-finished product solution miscible generation urea liquid again.
As preferably, by demarcation strip, one seal chamber to be divided into upper cavity be described finished product storage tank 83 for middle for described semi-finished product storage tank 74 and described finished product storage tank 83, and described lower chamber is described semi-finished product storage tank 74.
Further, described upper cavity and institute's lower chamber are equipped with the barospirator 9 for balancing cavity internal pressure.
In work, former water is delivered to after coagulating sedimentation sterilization more medium filter and remove most of colloid and suspension, then enter ultrafiltration by cartridge filter, removing macromolecular substances and virus.Ultrafiltration is produced water and is obtained the pure water of electrical conductivity lower than 5 μ S/cm through I and II reverse osmosis desalination, eventually passes smart desalination and obtains the ultra-pure water of resistance up to more than 18M Ω.
(2) will from the urea liquid of urea plant 134 DEG C, 99.7% (wt), with rise to warm above-mentioned high purity water rapid mixing in tubular type dissolving device and dissolve, make the aqueous solution of urea that concentration is 38% (wt), temperature is 90 DEG C.
(3) aqueous solution of urea prepared is cooled to 40 DEG C through plate type heat exchanger.
(4) objectionable impurities such as the aqueous solution of urea after cooling is sent into grade one filter and purified, the insoluble matter of removing greater particle size, then deliver to storage in semi-finished product basin, buffering.
(5) aqueous solution of urea after just purification and normal temperature high purity water are sent into rapid mixing dissolving again in another tubular type dissolving device, precision regulating makes the aqueous solution of urea that concentration is 31.8 ~ 33.2% (wt).
(6) be that the aqueous solution of urea of 31.8 ~ 33.2% (wt) is sent into secondary filter and purified by the concentration obtained, the harmful substances such as removing fine particle wherein, obtain highly purified car tail gas purificant.
(7) by the vehicle exhaust denitration reagent that obtains through ultraviolet sterilizer, sterilization treatment is done to product, reaches the object extending shelf life of products.Final products after sterilizing---AUS32 leaves in finished product storage tank.
The utility model contrasts other production method, has following bright spot and advantage:
(1) use current domestic water purification industry state-of-the-art RO+EDI device to carry out smart desalination, the ultra-pure water resistance obtained is up to more than 18M Ω.
(2) before miscible operation, urea plant is effectively utilized to resolve the waste heat of waste water to high purity water preheating, on the one hand science has been recycled heat energy thus has been reduced energy ezpenditure, greatly can reduce the danger that high concentration urea and cold medium contact produce Crystallization Plugging on the other hand.
(3) the raw material urea used is I company CO
2the high purity liquid state urea that air-extraction urea plant obtains under high vacuum, low-temperature operation environment, effectively inhibits the generation of noxious pollutant.The product obtained in production, once occur that proportioning lost efficacy, does not need revolution to operate, and directly enters urea Iarge-scale system from new utilization, ensures that unconventional stopping production does not appear in whole process.
(4) twice mixed dissolution all adopts pharmaceutical grade tubular static mixer, relies on self turbulent flow to realize Homogeneous phase mixing in media flow, overcome storage tank power be uniformly mixed uneven, cannot quantity-produced defect.
(5) production process is carried out in a sealed meter environment, and by high-precision flowmeter, thermometer, liquid level gauge, measuring pump etc., particularly high-precision densitometer etc. realize on line real-time monitoring.Accurate stage of modulating adopts high-precision measuring pump under DCS system controls, and control accuracy is high, easy to operate, can realize continuous and stable production.
(6) semi-finished product basin and finished product storage tank are all airtight containers, and the two designs, be fabricated to integrally coaxial, space region separation structure.For the pressure inside and outside equalizing reservoir, be respectively provided with a respirator at semi-finished product storage tank and finished product storage tank top, respirator is provided with precise filtering device, both ensured that container external and internal pressure is balanced, can prevent again product from polluting by introduced contaminants.
The above is only better embodiment of the present utility model, therefore all equivalences done according to structure, feature and the principle described in the utility model patent claim change or modify, and are included in the utility model patent claim.
Claims (4)
1. a urea for vehicle solution process units, comprise the more medium filter connected successively, ultrafiltration, counter-infiltration, RO+EDI main frame, desalted water storage tank, it is characterized in that: the desalted water in described desalted water storage tank is delivered to one-level dissolving device respectively through a desalted water delivery pump, secondary dissolving device, described one-level dissolving device comprises input section and output, described input connects described desalted water delivery pump through a desalted water heater, described output connects a solution cooler successively, grade one filter is to semi-finished product storage tank, described secondary dissolving device connects secondary filter successively, ultraviolet sterilizer is to finished product storage tank.
2. urea for vehicle solution process units according to claim 1, is characterized in that: described input is also connected with urea melting apparatus to described one-level dissolving device transporting molten urea.
3. urea for vehicle solution process units according to claim 1, is characterized in that: described semi-finished product storage tank connects described secondary dissolving device through a solution transfer pump, and to its conveying semi-finished product solution miscible generation urea liquid again.
4. urea for vehicle solution process units according to claim 1, is characterized in that: described semi-finished product storage tank and described finished product storage tank are equipped with the barospirator for balancing cavity internal pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420438828.0U CN204073982U (en) | 2014-11-12 | 2014-11-12 | Urea for vehicle solution process units |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420438828.0U CN204073982U (en) | 2014-11-12 | 2014-11-12 | Urea for vehicle solution process units |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204073982U true CN204073982U (en) | 2015-01-07 |
Family
ID=52166748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420438828.0U Expired - Fee Related CN204073982U (en) | 2014-11-12 | 2014-11-12 | Urea for vehicle solution process units |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204073982U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018080007A1 (en) * | 2016-10-25 | 2018-05-03 | 주식회사 소울테크 | Preparation method for removing triuret causing turbidity in urea water |
| EP3556455A4 (en) * | 2016-12-13 | 2020-07-29 | Zhuhai Gree Intelligent Equipment Co., Ltd | Urea production apparatus |
| CN113565603A (en) * | 2021-05-20 | 2021-10-29 | 路路达环保科技有限责任公司 | Automobile-used urea filling system |
| CN114247363A (en) * | 2021-12-31 | 2022-03-29 | 河南豫能天蓝环保有限公司 | Integrated automobile-used urea blending system |
-
2014
- 2014-11-12 CN CN201420438828.0U patent/CN204073982U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018080007A1 (en) * | 2016-10-25 | 2018-05-03 | 주식회사 소울테크 | Preparation method for removing triuret causing turbidity in urea water |
| EP3556455A4 (en) * | 2016-12-13 | 2020-07-29 | Zhuhai Gree Intelligent Equipment Co., Ltd | Urea production apparatus |
| CN113565603A (en) * | 2021-05-20 | 2021-10-29 | 路路达环保科技有限责任公司 | Automobile-used urea filling system |
| CN114247363A (en) * | 2021-12-31 | 2022-03-29 | 河南豫能天蓝环保有限公司 | Integrated automobile-used urea blending system |
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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 |
Granted publication date: 20150107 |