CN202898280U - Energy-saving melamine production device - Google Patents
Energy-saving melamine production device Download PDFInfo
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- CN202898280U CN202898280U CN2012205868233U CN201220586823U CN202898280U CN 202898280 U CN202898280 U CN 202898280U CN 2012205868233 U CN2012205868233 U CN 2012205868233U CN 201220586823 U CN201220586823 U CN 201220586823U CN 202898280 U CN202898280 U CN 202898280U
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- washing tower
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- crystallizer
- saving
- urea washing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
The utility model discloses an energy-saving melamine production device which is characterized in that a reactor is sequentially connected with a hot gas filter, a crystallizer and a cyclone separator, wherein one part of the cyclone separator is connected to a product unpacking system, and the other part is connected to a urea washing tower; a gas outlet of the urea washing tower is divided into three parts, wherein the first part is sequentially connected to a compressor and the reactor, the second part is connected to a cool air fan and connected back to the crystallizer, and the third part directly exhausts outside; and a liquid part is sequentially connected to a urine pump and a heat exchanger, and the heat exchanger is connected back to the urea washing tower. The device disclosed by the utility model is characterized in that the risk of high-pressure explosion of the cooling medium such as Daosheng, molten salt and the like caused by the equipment experiencing water leakage is thoroughly eliminated by removing the hot gas cooling equipment and system; and the device optimizes the technological process and has the advantages of simple process, long operation time, elimination of potential risk, saving of one-time investment and the like.
Description
Technical field
The utility model relates to the Melamine Production field, is specifically related to a kind of Production Flow Chart device of energy-saving trimeric cyanamide.
Background technology
The production technique of present trimeric cyanamide, all be as raw material take liquid area, at fluidized-bed reactor, at 350-420 ℃, 0-0.5MPa reaction generates trimeric cyanamide under the pressure, ammonia and carbonic acid gas, enter the hot gas water cooler from reactor material gas out, with other media such as Dao Sheng or fused salts process gas is lowered the temperature, make high boiling point by-products produced with solid crystal out, process stream gas after being cooled enters the solid impurity in the hot-air filter filtering gas, gas after the filtration enters crystallizer and the reverse contact heat-exchanging of technique cold air of urinating washing system from liquid, trimeric cyanamide is separated out from process stream gas with the form of solid, and the gas that then contains the trimeric cyanamide solid send packaging system after cyclonic separator separates.Added by blower fan from cyclonic separator gas out and to be sent to the washing of liquid urine washing system and cooling, minute three the tunnel, the one tunnel as the technique cold air device that decrystallizes, the one tunnel as circulation gas dereaction device after separating for the gas after the cooling, and one the tunnel receives as the tail gas aspiration that truncates.
The shortcoming of this technique is that the hot gas water cooler easily stops up, and the device continuous operating time is short, and every operation is installed about 30-40 days and will be stopped, the heat transfer tube of cleaning hot gas water cooler, and the cleaning difficulty is large, and clearance time reaches two weeks, and expense is up to 100,000 yuan; The 2nd, Dao Sheng or salt melting system are dangerous large, and give birth in the high temperature road or fused salt is met water generates high pressure, the danger of blasting easily.
Summary of the invention
The purpose of this utility model is to provide that a kind of flow process is simple, long operational time, eliminated the Production Flow Chart device of the energy-saving trimeric cyanamide of the advantages such as potential danger, one-time investment are few.
The purpose of this utility model adopts following technical scheme to realize: a kind of Production Flow Chart device of energy-saving trimeric cyanamide, comprise reactor, hot-air filter, crystallizer, cyclonic separator, product unlap system, urea washing tower, urine pump, heat exchanger, Cool gas blower, compressor, it is characterized in that: reactor connects hot-air filter, crystallizer, cyclonic separator successively; A cyclonic separator part is connected to product unlap system, and another part is connected to the urea washing tower; Urea washing tower pneumatic outlet is divided into three parts, and a part is connected to compressor, reactor successively, and a part is connected to Cool gas blower, tieback is to crystallizer again, another part directly effluxes, and liquid portion is connected to urine pump, heat exchanger successively, this heat exchanger again tieback to the urea washing tower.
Characteristics of the present utility model are: directly enter hot-air filter from the reactor process gas that contains trimeric cyanamide out, hot gas cooling apparatus and cooling system have been removed, with be introduced into the hot gas water cooler from reactor process gas out in the technique of present trimeric cyanamide, and then enter hot-air filter relatively, the former has saved the hot gas cooling system, thoroughly eliminated the factor that causes device to stop because of the obstruction of hot gas heat-exchange tube of cooler, avoided the trouble of stopping device being cleared up, the cycle of operation extended to more than 90 days continuously; Owing to removed hot gas cooling apparatus and system, eliminated thoroughly that the road is given birth to or the heat-eliminating medium such as fused salt leaks the danger of meeting the blast of water generates high pressure because of equipment; Optimized technical process, had that flow process is simple, long operational time, eliminated the advantages such as potential danger, one-time investment province.
Description of drawings
Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof.
Fig. 1 is structural representation of the present utility model.
Fig. 1 doubles as Figure of abstract.
Among the figure 1, urea, 2, reactor, 3, hot-air filter, 4, crystallizer, 5, cyclonic separator, 6, product unlap system, 7, the urea washing tower, 8, the urine pump, 9, heat exchanger, 10, Cool gas blower, 11, compressor.
Embodiment
By the following examples, the utility model is described in more detail, but as long as in main idea scope of the present utility model, is not limited in following examples.
The Production Flow Chart device of a kind of energy-saving trimeric cyanamide as shown in Figure 1, comprise reactor, hot-air filter, crystallizer, cyclonic separator, product unlap system, urea washing tower, urine pump, heat exchanger, Cool gas blower, compressor, it is characterized in that: reactor 2 connects hot-air filter 3, crystallizer 4, cyclonic separator 5 successively; Cyclonic separator 5 parts are connected to product unlap system 6, and another part is connected to urea washing tower 7; Urea washing tower 7 pneumatic outlets are divided into three parts, and a part is connected to compressor 9, reactor 2 successively, and a part is connected to Cool gas blower 10, tieback is to crystallizer 4 again, another part directly effluxes, and liquid portion is connected to urine pump 8, heat exchanger 9 successively, and tieback is to urea washing tower 7 again.
The purpose of this utility model is achieved in that take urea as raw material, katalysis by catalyzer in reactor 2, reaction generates trimeric cyanamide, ammonia and carbonic acid gas under 350-420 ℃, 0-0.6MPa pressure, directly entering hot-air filter 3 from reactor 2 material gas out filters, remove the hot gas water cooler, the process gas that contains trimeric cyanamide after the filtration enters crystallizer 4, and the trimeric cyanamide after crystallization enters cyclonic separator 5, isolated solid triamine feeding storehouse packing; Enter urea washing tower 7 from cyclonic separator 5 gas out, by liquid urine and jacket water (J.W.) 200-220 ℃ the gas that contains ammonia and carbonic acid gas is cooled to 130-145 ℃, then feed liquor urine washing tower purifies process gas, after purify absorbing the liquid urine droplet of gas by carrying secretly in the separator divided gas flow, gas after the separation divides with compressor 11 compression enter reactor 2 at three the tunnel: the one tunnel, one the tunnel boosts through Cool gas blower enters crystallizer 4, and one the tunnel is that tail gas is discharged system.
The utility model has been optimized the Melamine Production flow path device, has removed hot gas cooling apparatus and cooling system 3 from reactor 2 to hot-air filter.
Above-described embodiment only is one of preferred embodiment of the present utility model; be not to limit protection domain of the present utility model with this; so: all equivalences of doing according to shape of the present utility model, structure, principle change, and all should be covered by within the protection domain of the present utility model.
Claims (2)
1. the Production Flow Chart device of an energy-saving trimeric cyanamide, comprise reactor, hot-air filter, crystallizer, cyclonic separator, product unlap system, urea washing tower, urine pump, heat exchanger, Cool gas blower, compressor, it is characterized in that: reactor (2) connects hot-air filter (3), crystallizer (4), cyclonic separator (5) successively; Cyclonic separator (a 5) part is connected to product unlap system (6), and another part is connected to urea washing tower (7).
2. the Production Flow Chart device of a kind of energy-saving trimeric cyanamide according to claim 1, it is characterized in that: urea washing tower (7) pneumatic outlet is divided into three parts, a part is connected to compressor (9), reactor (2) successively, a part is connected to Cool gas blower (10), tieback is to crystallizer (4) again, another part directly effluxes, and liquid portion is connected to urine pump (8), heat exchanger (9) successively, and tieback is to urea washing tower (7) again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205868233U CN202898280U (en) | 2012-11-04 | 2012-11-04 | Energy-saving melamine production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205868233U CN202898280U (en) | 2012-11-04 | 2012-11-04 | Energy-saving melamine production device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202898280U true CN202898280U (en) | 2013-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205868233U Expired - Fee Related CN202898280U (en) | 2012-11-04 | 2012-11-04 | Energy-saving melamine production device |
Country Status (1)
| Country | Link |
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| CN (1) | CN202898280U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103804311A (en) * | 2012-11-02 | 2014-05-21 | 华强化工集团股份有限公司 | Energy-saving melamine production process device |
| CN109369551A (en) * | 2018-10-17 | 2019-02-22 | 阳煤丰喜肥业（集团）有限责任公司 | A kind of long period energy-saving melamine production system |
-
2012
- 2012-11-04 CN CN2012205868233U patent/CN202898280U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103804311A (en) * | 2012-11-02 | 2014-05-21 | 华强化工集团股份有限公司 | Energy-saving melamine production process device |
| CN109369551A (en) * | 2018-10-17 | 2019-02-22 | 阳煤丰喜肥业（集团）有限责任公司 | A kind of long period energy-saving melamine production 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: 20130424 Termination date: 20201104 |
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| CF01 | Termination of patent right due to non-payment of annual fee |