CN203513297U - Urea solution hydrolyzing and ammonia producing system - Google Patents
Urea solution hydrolyzing and ammonia producing system Download PDFInfo
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- CN203513297U CN203513297U CN201320752432.9U CN201320752432U CN203513297U CN 203513297 U CN203513297 U CN 203513297U CN 201320752432 U CN201320752432 U CN 201320752432U CN 203513297 U CN203513297 U CN 203513297U
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- urea soln
- urea
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- soln
- urea solution
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- 239000004202 carbamide Substances 0.000 title claims abstract description 121
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 113
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 41
- 230000003301 hydrolyzing effect Effects 0.000 title abstract 7
- 238000002360 preparation method Methods 0.000 claims abstract description 12
- 230000007062 hydrolysis Effects 0.000 claims description 25
- 238000006460 hydrolysis reaction Methods 0.000 claims description 25
- 230000008676 import Effects 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 5
- 230000029142 excretion Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 150000003672 ureas Chemical class 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 239000002994 raw material Substances 0.000 abstract description 7
- 239000002699 waste material Substances 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 4
- 238000003860 storage Methods 0.000 abstract description 4
- 238000005070 sampling Methods 0.000 abstract 2
- 238000003756 stirring Methods 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000007547 defect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 14
- 235000011114 ammonium hydroxide Nutrition 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model discloses a urea solution hydrolyzing and ammonia producing system, and is used for solving the problems that the urea solution hydrolyzing and ammonia producing system in the prior art has the defects of complex ammonia producing process, complex operation and low urea hydrolyzing efficiency due to complex equipment structure. The urea solution hydrolyzing and ammonia producing system comprises a urea automatic feeding funnel lifting machine, a urea solution preparation system, a urea solution storage system and a urea solution hydrolyzing system which are sequentially connected, wherein the urea solution preparation system comprises a urea solution preparation box connected with the urea automatic feeding funnel lifting machine at the top and connected with a transmission pump at the bottom, a stirring device, a first heat exchanger, a first sampling opening and a first emptying opening; the stirring device and the first heat exchanger are arranged inside the urea solution preparation box; the first sampling opening and the first emptying opening are arranged at the bottom of the urea solution preparation box. The urea solution hydrolyzing and ammonia producing system is provided with the urea automatic feeding funnel lifting machine, so that the normal reaction inside the preparation box can be ensured; furthermore, the incomplete reaction due to excessive raw materials is avoided, so that the waste of the raw material is avoided.
Description
Technical field
The utility model relates to a kind of urea soln hydrolysis ammonia system processed.
Background technology
Heat power plant boiler burning produces a large amount of flue gases, wherein NO
xcontent is high, according to the < < fuel-burning power plant atmosphere pollutants emission standards > > requirement of implementing on January 1st, 2012, all fossil fuel fired boiler all must arrange denitrification apparatus, particularly large-sized boiler.The method of its use will be for selective catalytic reduction (SCR method) chemical reaction:
Be that SCR method is used a large amount of ammonia (NH
3).
Ammonia method processed mainly has three kinds of modes, i.e. ammoniacal liquor, liquefied ammonia, urea according to region, envrionment conditions (containing transportation, storage) both at home and abroad at present.
Ammoniacal liquor, liquefied ammonia, the relative liquefied ammonia of ammoniacal liquor is safer, but all belongs to hazardous substance.The blast utmost point root of ammonia steam and air mixture is 15.7%-27.4%, reaches this concentration range and meets naked light energy combustion explosion.Recently, a lot of A leak of liquefied ammonia explosive incidents of domestic appearance have been brought very big injury and psychological burden to people's life, property.And ammoniacal liquor, liquefied ammonia transportation, storage be difficulty relatively.
Urea is a kind of colourless or white, nontoxic, harmless chemical, and is easy to transportation, storage.Therefore, it is to expand gradually at present use as feed for ammonia production, and very popular.
According to urea characteristic, process for producing ammonia from urea is divided into hydrolysis and two kinds of methods of pyrolysis.But existing urea hydrolysis ammonia producing system device structure is complicated, thereby cause Ammonia Process complicated, complex operation, hydrolysis of urea efficiency is low.
Utility model content
The purpose of this utility model is to provide a kind of urea soln hydrolysis ammonia system processed, and the urea hydrolysis ammonia producing system device structure that solves prior art is complicated, thereby causes Ammonia Process complicated, complex operation, the inefficient problem of hydrolysis of urea.
To achieve these goals, the technical solution adopted in the utility model is as follows:
Urea soln hydrolysis ammonia system processed, comprises successively connected urea automatic charging bucket elevator, urea soln preparation system, urea soln stocking system and urea soln hydrolysis system; Described urea soln preparation system comprises that top prepares case with the urea soln that urea automatic charging bucket elevator is connected, bottom is connected with transferpump, agitator and First Heat Exchanger in being arranged at, and be arranged at the first thief hole and the first drain that urea soln is prepared case bottom.
Further, described urea soln hydrolysis system comprises urea soln hydrolyzer, this urea soln hydrolyzer comprises the cylinder of horizontal type structure, the classification being arranged in cylinder regulates interchanger, be arranged at the urea soln import of cylinder bottom, be arranged at the product gas outlet at cylinder top, and the urea soln excretion interface that is arranged at cylinder bottom; Described urea soln import is connected with take away pump.
Again further, described classification regulates interchanger to be comprised of plural tube exchanger; Described cylinder outside is also provided with steam inlet and the condensation-water drain being communicated with tube exchanger.
Further, described cylinder inside is also provided with and is connected with urea soln import and for urea being evenly distributed to the divider in cylinder; Described divider is ring structure, and is comprised of pipeline; Described pipeline below is provided with aperture.
In order to improve the quality of ammonia, described product gas outlet is communicated with cylinder by gas outlet pipe, on described gas outlet pipe, is also provided with wire mesh demister.
Further, described urea soln stocking system comprises the urea soln bin that top is connected with transferpump, bottom is connected with take away pump, be arranged at the second interchanger in urea soln bin, and the second thief hole and the second drain that are arranged at urea soln bin bottom.
Again further, described urea soln is prepared on case and urea soln bin and is equipped with densitometer, liquidometer and thermometer.
Further, described cylinder outside is also provided with coupled relief valve connection, distance-transmission pressure gauge, tensimeter, online liquidometer, gas phase temperature meter, liquid thermometer and vision slit on the spot, and for the bearing of support cylinder body.
In addition, described vision slit is arranged on cylinder medullary ray.
As a kind of preferred, described urea automatic charging bucket elevator is automatic gauge feeding system.
The utility model compared with prior art, has the following advantages and beneficial effect:
(1) the utility model is provided with urea automatic charging bucket elevator, can guarantee to prepare normal reaction in case, and there will not be raw material too much to cause reaction not exclusively, causes the waste of raw material.
(2) in urea soln hydrolyzer of the present utility model, be provided with and decompose adjusting interchanger, can distribute and regulate interchanger according to ammonia requirement, when guaranteeing reaction efficiency, avoid the waste of the energy.
(3) in cylinder of the present utility model, be also provided with the divider being connected with urea soln import, this divider adopts pipeline porous to spray, and solution is more fully mixed, and uniformity coefficient is high, improve widely rate of decomposition, thereby reached efficient energy-saving object.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is urea soln hydrolysis system structural representation in the utility model.
Fig. 3 is the diagrammatic cross-section of urea soln hydrolysis system in the utility model.
Fig. 4 is the structural representation of divider in the utility model.
Fig. 5 is the diagrammatic cross-section of divider in the utility model.
Wherein, the component name that in accompanying drawing, mark is corresponding is called: 1-urea automatic charging bucket elevator, 2-urea soln is prepared case, 3-agitator, 4-First Heat Exchanger, 5-the first thief hole, 6-the first drain, 7-urea soln bin, 8-the second interchanger, 9-the second thief hole, 10-the second drain, 11-cylinder, 12-classification regulates interchanger, the import of 13-urea soln, 14-product gas outlet, 15-urea soln excretion interface, 16-divider, 17-steam inlet, 18-condensation-water drain, 19-gas outlet pipe, 20-wire mesh demister, 21-relief valve connection, 22-distance-transmission pressure gauge, 23-is tensimeter on the spot, the online liquidometer of 24-, 25-gas phase temperature meter, 26-liquid thermometer, 27-vision slit, 28-bearing, 29-transferpump, 30-take away pump.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail, and embodiment of the present utility model includes but not limited to the following example.
Embodiment
As shown in Fig. 1～5, urea soln hydrolysis ammonia system processed, comprises successively connected urea automatic charging bucket elevator 1, urea soln preparation system, transferpump 29, urea soln stocking system, take away pump 30 and urea soln hydrolysis system; Described urea soln preparation system comprises that top prepares case 2 with the urea soln that urea automatic charging bucket elevator 1 is connected, bottom is connected with transferpump, agitator 3 and First Heat Exchanger 4 in being arranged at, and be arranged at the first thief hole 5 and the first drain 6 that urea soln is prepared case bottom.By the urea automatic charging bucket elevator of above-mentioned setting, can realize from trend urea soln and prepare in case and add raw material, can guarantee that add-on is suitable, there will not be raw material to add and too much cause reaction not exclusively simultaneously, affect subsequent handling, avoided the waste of raw material simultaneously.As a kind of preferred, described urea automatic charging bucket elevator is automatic gauge feeding system.
Further, described urea soln hydrolysis system comprises urea soln hydrolyzer, this urea soln hydrolyzer comprises the cylinder 11 of horizontal type structure, the classification being arranged in cylinder 11 regulates interchanger 12, be arranged at the urea soln import 13 of cylinder bottom, be arranged at the product gas outlet 14 at cylinder top, and the urea soln excretion interface 15 that is arranged at cylinder bottom; Described urea soln import is connected with take away pump; And described classification regulates interchanger 12 to be comprised of plural tube exchanger; Described cylinder 11 outsides are also provided with steam inlet 17 and the condensation-water drain 18 being communicated with tube exchanger.By above-mentioned setting, can distribute and regulate interchanger according to ammonia requirement, assurance reaction efficiency has been avoided the waste of the energy simultaneously.Namely can open arbitrarily one of them interchanger and heat, also can open a plurality of heating simultaneously, user only need regulate according to actual needs, has realized and having made rational use of resources, and avoids waste.What deserves to be explained is that interchanger of the present utility model can be comprised of " U " type tubular heat exchanger equally, can select according to practical situation is to adopt tube exchanger or " U " type tubular heat exchanger.
For urea soln can be mixed uniformly in cylinder, described cylinder 11 inside are also provided with and are connected with urea soln import and for urea being evenly distributed to the divider 16 in cylinder; Described divider 16 is ring structure, and is comprised of pipeline; Described pipeline below is provided with aperture.Described pipeline below is provided with the parallel aperture of 3 row, and aperture is 5mm, and the perforate total area is offered by 1.1 times of inlet pipe area.Certainly according to the actual requirements, cylinder bottom is also provided with for supporting pillar the stablizing with raising divider of divider.
In order to guarantee the quality of ammonia, described product gas outlet 14 is communicated with cylinder by gas outlet pipe 19, on described gas outlet pipe 19, is also provided with wire mesh demister 20.By the wire mesh demister arranging, ammonia and liquid can be carried out separated, thereby guarantee the quality of ammonia.In order to facilitate cleaning, the maintenance of wire mesh demister, described wire mesh demister is drawer-type structure, and is connected with gas outlet pipe is detachable.
Again further, described urea soln stocking system comprises the urea soln bin 7 that top is connected with transferpump, bottom is connected with take away pump, be arranged at the second interchanger 8 in urea soln bin 7, and the second thief hole 9 and the second drain 10 that are arranged at urea soln bin 8 bottoms.
In order better to realize the utility model, described urea soln is prepared on case and urea soln bin and is equipped with densitometer, liquidometer and thermometer.
In addition, described cylinder 11 outsides are also provided with coupled relief valve connection 21, distance-transmission pressure gauge 22, tensimeter 23, online liquidometer 24, gas phase temperature meter 25, liquid thermometer 26 and vision slit 27 on the spot, and for the bearing 28 of support cylinder body.
As a kind of preferred, for decomposition situation in convenient observation cylinder, described vision slit 27 is arranged on cylinder medullary ray.
According to above-described embodiment, just can realize well the utility model.What deserves to be explained is; under prerequisite based on said structure design; for solving same technical problem; even if some that make on the utility model are without substantial change or polishing; the essence of the technical scheme adopting is still the same with the utility model, therefore it also should be in protection domain of the present utility model.
Claims (10)
1. urea soln hydrolysis ammonia system processed, is characterized in that, comprises successively connected urea automatic charging bucket elevator (1), urea soln preparation system, transferpump (29), urea soln stocking system, take away pump (30) and urea soln hydrolysis system; Described urea soln preparation system comprises that top prepares case (2) with the urea soln that urea automatic charging bucket elevator (1) is connected, bottom is connected with transferpump, agitator (3) and First Heat Exchanger (4) in being arranged at, and be arranged at the first thief hole (5) and the first drain (6) that urea soln is prepared case bottom.
2. urea soln according to claim 1 is hydrolyzed ammonia system processed, it is characterized in that, described urea soln hydrolysis system comprises urea soln hydrolyzer, this urea soln hydrolyzer comprises the cylinder (11) of horizontal type structure, the classification being arranged in cylinder (11) regulates interchanger (12), be arranged at the urea soln import (13) of cylinder bottom, be arranged at the product gas outlet (14) at cylinder top, and the urea soln excretion interface (15) that is arranged at cylinder bottom; Described urea soln import is connected with take away pump.
3. urea soln hydrolysis according to claim 2 ammonia system processed, is characterized in that, described classification regulates interchanger (12) to be comprised of plural tube exchanger; Outside steam inlet (17) and the condensation-water drain (18) being communicated with tube exchanger that be also provided with of described cylinder (11).
4. urea soln according to claim 3 hydrolysis ammonia system processed, is characterized in that, described cylinder (11) inside is also provided with and is connected with urea soln import and for urea being evenly distributed to the divider (16) in cylinder; Described divider (16) is ring structure, and is comprised of pipeline; Described pipeline below is provided with aperture.
5. urea soln hydrolysis according to claim 4 ammonia system processed, is characterized in that, described product gas outlet (14) is communicated with cylinder by gas outlet pipe (19), is also provided with wire mesh demister (20) on described gas outlet pipe (19).
6. urea soln according to claim 5 is hydrolyzed ammonia system processed, it is characterized in that, described urea soln stocking system comprises the urea soln bin (7) that top is connected with transferpump, bottom is connected with take away pump, be arranged at the second interchanger (8) in urea soln bin (7), and the second thief hole (9) and the second drain (10) that are arranged at urea soln bin (8) bottom.
7. urea soln according to claim 6 hydrolysis ammonia system processed, is characterized in that, described urea soln is prepared on case and urea soln bin and is equipped with densitometer, liquidometer and thermometer.
8. urea soln according to claim 7 is hydrolyzed ammonia system processed, it is characterized in that, described cylinder (11) is outside is also provided with coupled relief valve connection (21), distance-transmission pressure gauge (22), tensimeter (23), online liquidometer (24), gas phase temperature meter (25), liquid thermometer (26) and vision slit (27) on the spot, and for the bearing (28) of support cylinder body.
9. urea soln hydrolysis according to claim 8 ammonia system processed, is characterized in that, described vision slit (27) is arranged on cylinder medullary ray.
10. according to the urea soln hydrolysis ammonia system processed described in claim 1～9 any one, it is characterized in that, described urea automatic charging bucket elevator is automatic gauge feeding system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320752432.9U CN203513297U (en) | 2013-11-26 | 2013-11-26 | Urea solution hydrolyzing and ammonia producing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320752432.9U CN203513297U (en) | 2013-11-26 | 2013-11-26 | Urea solution hydrolyzing and ammonia producing system |
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| Publication Number | Publication Date |
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| CN203513297U true CN203513297U (en) | 2014-04-02 |
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|---|---|---|---|
| CN201320752432.9U Expired - Fee Related CN203513297U (en) | 2013-11-26 | 2013-11-26 | Urea solution hydrolyzing and ammonia producing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103979575A (en) * | 2014-05-16 | 2014-08-13 | 北京博智伟德环保科技有限公司 | System and control method for producing ammonia gas by hydrolyzing urea solution |
| CN104474892A (en) * | 2014-12-09 | 2015-04-01 | 邹英奎 | Production method of denitrification powder |
-
2013
- 2013-11-26 CN CN201320752432.9U patent/CN203513297U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103979575A (en) * | 2014-05-16 | 2014-08-13 | 北京博智伟德环保科技有限公司 | System and control method for producing ammonia gas by hydrolyzing urea solution |
| CN104474892A (en) * | 2014-12-09 | 2015-04-01 | 邹英奎 | Production method of denitrification powder |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: The information industry building, No. 159 East loop section of Chengdu Chenghua District 610000 Sichuan province No. 1106 Patentee after: CHENGDU SHIGANG ENERGY SAVING AND ENVIRONMENT PROTECTION ENGINEERING Co.,Ltd. Address before: The information industry building, No. 159 East loop section of Chengdu Chenghua District 610000 Sichuan province No. 1106 Patentee before: CHENGDU SHIGANG ENVIRONMENTAL PROTECTION ENGINEERING Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 |