CN201969502U - Continuous urea liquor preparing system - Google Patents
Continuous urea liquor preparing system Download PDFInfo
- Publication number
- CN201969502U CN201969502U CN2010206585514U CN201020658551U CN201969502U CN 201969502 U CN201969502 U CN 201969502U CN 2010206585514 U CN2010206585514 U CN 2010206585514U CN 201020658551 U CN201020658551 U CN 201020658551U CN 201969502 U CN201969502 U CN 201969502U
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- urea
- urea liquor
- tank
- urea liquid
- storage tank
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Abstract
The utility model relates to a continuous urea liquor preparing system which comprises a urea liquor preparing tank and a urea liquor storage tank, wherein both the urea liquor preparing tank and the urea liquor storage tank are provided with steam heating coils and liquid level meters; the urea liquor preparing tank is provided with a water inlet pipe, a urea particle feeding pipe and a stirrer; the lower part of the urea liquor preparing tank is connected with a circulating pump; and the outlet end of the circulating pump is connected with top of the urea liquor preparing tank and the inlet of the urea liquor storage tank simultaneously. The continuous urea liquor preparing system can continuously provide urea liquor that is used as a flue gas denitration reductant; the steam heating coils are adopted for heating in tank bodies; no crystal is produced during the storage of the urea liquor; and the problem of pipeline blockage caused by crystallization when the continuous urea liquor preparing system is out of work for a short or long term is avoided.
Description
Technical field
The utility model relates to a kind of continuous preparation system that is used for the urea liquid of denitrating flue gas reducing agent.
Background technology
Urea or the liquefied ammonia reducing agent as denitration reaction is adopted in present most of power-plant flue gas denitration more, and liquefied ammonia belongs to poisonous flammable and combustible liquids, relates to the requirement of each side such as environmental protection, security against fire in building construction, and difficulty of construction requires than higher.The urea granules thing belongs to the general chemistry goods, has no special requirements for environmental protection and fire-fighting, and safety, the ventilation equipment that only need carry out the preparation zone gets final product.Urea is as reducing agent, store and preparation safer, requires lowlyer, for liquefied ammonia, storage that takies and preparation zone are less, easily transportation with lay in, in the selection of denitrification reducing agent, pay the utmost attention to.
The water source of urea production solution was from the hot water that is heated to 100 degree in advance in the past, because the urea dissolving is the heat absorption reflection, in course of dissolution, the temperature of solution descends clearly, the configuration temperature that causes urea liquid is under the crystalline temperature temperature, join less than the urea concentration of setting, and do not have follow-up heating system, the business accounting and the operation of engineering caused very big puzzlement.
Summary of the invention
The purpose of this utility model provides a kind of continuous preparation system of urea liquid, can prepare urea liquid safely and efficiently, and the reducing agent of denitrating flue gas reaction is provided.
The continuous preparation system of the utility model urea liquid comprises urea liquid batch tank and urea liquid storage tank, and urea liquid batch tank and urea liquid storage tank are equipped with steam(-)coil and liquid level gauge; The urea liquid batch tank is provided with water inlet pipe, urea granules feed pipe and agitator; The bottom of urea liquid batch tank is connected with circulating pump, and the outlet of circulating pump end is connected with the top of urea liquid batch tank and the import of urea liquid storage tank simultaneously.
Native system can continuity prepares urea liquid and is stored in the storage tank, can provide urea liquid as the denitrating flue gas reducing agent continuously to boiler by storage tank, and the stoppage in transit phase still can guarantee the normal operation of whole denitrating system.Adopt the mode of coil pipe in the tank interior heating, thereby solved the temperature that causes owing to the endothermic reaction during urea liquid stores and reduced the problem that causes crystallization, when short-term is stopped transport, urea liquid circulates in internal system, during long-term the stoppage in transit, adopt industry water that pipeline is carried out backwash, avoid causing urea liquid temperature decline crystallization to cause the problem of blocking pipe because of long-term the stoppage in transit.Whole repair and maintenance is convenient, the saving investment.
Description of drawings
Fig. 1 is the continuous preparation system schematic diagram of the utility model urea liquid.
1-urea batch tank, 2-urea liquid storage tank, 3-urea cycle pump, 4-urea booster pump, 5-agitator, 6-heat(ing) coil, 7-liquid level gauge.
The specific embodiment
Structure and operation principle below in conjunction with the continuous preparation system of this urea liquid of description of drawings.As Fig. 1, native system comprises urea liquid batch tank 1 and urea liquid storage tank 2, and urea liquid batch tank 1 and urea liquid storage tank 2 are equipped with steam(-)coil 6 and liquid level gauge 7; Urea liquid batch tank 1 also is provided with agitator 5, industry water inlet tube and urea granules feed pipe; The bottom of urea liquid batch tank 1 is connected with circulating pump 3, and the port of export of circulating pump 3 is connected with the top of urea liquid batch tank 1 and the import of urea liquid storage tank 2 simultaneously.
Urea granules enters into batch tank 1, feeds the industry water dissolving simultaneously, starts agitator 5, feeds low-pressure steam, controls the tank interior material by the liquid level gauge of tank body.After stirring certain hour, open urea cycle pump 3 and carry out inner loop, behind the self-loopa certain hour, stop return duct, urea liquid is transported to urea liquid storage tank 2 through circulating pump 3.Heat(ing) coil 6 is set in the urea liquid storage tank 2, the temperature of control urea liquid between volatilization and crystallization temperature, thereby avoid taking place volatilization and crystallization.Be convenient to long-time storage, the volume of urea liquid storage tank 2 will be much larger than batch tank.Urea liquids in the urea liquid storage tank 2 are transported to spraying system through urea booster pump 4, as reducing agent to furnace injection.Native system can adopt equipment such as Self controlling valve and instrument, not only can realize hand behaviour on the spot, the operation of all right Long-distance Control total system, the capacity of urea liquid storage tank 2 is to move required consumption of all left and right sides time under the nominal situation continuously, when short-term was stopped transport, urea liquid circulated in internal system, when stopping transport for a long time, adopt industry water that pipeline is carried out backwash, avoid causing urea liquid temperature decline crystallization to cause the problem of blocking pipe because of long-term the stoppage in transit.
Claims (1)
1. the continuous preparation system of urea liquid is characterized in that comprising urea liquid batch tank and urea liquid storage tank, and urea liquid batch tank and urea liquid storage tank are equipped with steam(-)coil and liquid level gauge; The urea liquid batch tank is provided with water inlet pipe, urea granules feed pipe and agitator; The bottom of urea liquid batch tank is connected with circulating pump, and the outlet of circulating pump end is connected with the top of urea liquid batch tank and the import of urea liquid storage tank simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206585514U CN201969502U (en) | 2010-12-14 | 2010-12-14 | Continuous urea liquor preparing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206585514U CN201969502U (en) | 2010-12-14 | 2010-12-14 | Continuous urea liquor preparing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201969502U true CN201969502U (en) | 2011-09-14 |
Family
ID=44574608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206585514U Expired - Lifetime CN201969502U (en) | 2010-12-14 | 2010-12-14 | Continuous urea liquor preparing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201969502U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102580589A (en) * | 2012-03-12 | 2012-07-18 | 无锡雪浪环境科技股份有限公司 | Medicament preparation device for controlling emission of nitrogen oxides in flue gas |
| CN103495355A (en) * | 2013-09-05 | 2014-01-08 | 西安热工研究院有限公司 | Preparation and delivery system and preparation and delivery method for supersaturated urea solution |
| CN104524949A (en) * | 2015-01-07 | 2015-04-22 | 东莞市红树林环保科技有限公司 | SNCR denitration method for urea solutions of double concentrations |
| CN105148756A (en) * | 2015-09-30 | 2015-12-16 | 中国船舶重工集团公司第七一一研究所 | Solution preparation device |
| CN105201601A (en) * | 2015-10-19 | 2015-12-30 | 珠海格力电器股份有限公司 | Automobile urea solution heating device and method |
| CN106139868A (en) * | 2016-08-26 | 2016-11-23 | 东南大学 | A kind of remove the system of sulfur trioxide in flue gas in power station boiler |
| CN106669477A (en) * | 2016-12-14 | 2017-05-17 | 珠海格力智能装备有限公司 | Method and equipment for preparing adblue solution |
| CN114733336A (en) * | 2022-04-08 | 2022-07-12 | 华润电力(宁武)有限公司 | System for preventing urea solution conveying pipeline from being blocked |
-
2010
- 2010-12-14 CN CN2010206585514U patent/CN201969502U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102580589A (en) * | 2012-03-12 | 2012-07-18 | 无锡雪浪环境科技股份有限公司 | Medicament preparation device for controlling emission of nitrogen oxides in flue gas |
| CN103495355A (en) * | 2013-09-05 | 2014-01-08 | 西安热工研究院有限公司 | Preparation and delivery system and preparation and delivery method for supersaturated urea solution |
| CN103495355B (en) * | 2013-09-05 | 2016-04-13 | 西安热工研究院有限公司 | A kind of urea supersaturated solution preparation is with induction system and prepare carrying method |
| CN104524949A (en) * | 2015-01-07 | 2015-04-22 | 东莞市红树林环保科技有限公司 | SNCR denitration method for urea solutions of double concentrations |
| CN105148756A (en) * | 2015-09-30 | 2015-12-16 | 中国船舶重工集团公司第七一一研究所 | Solution preparation device |
| CN105201601A (en) * | 2015-10-19 | 2015-12-30 | 珠海格力电器股份有限公司 | Automobile urea solution heating device and method |
| CN106139868A (en) * | 2016-08-26 | 2016-11-23 | 东南大学 | A kind of remove the system of sulfur trioxide in flue gas in power station boiler |
| CN106669477A (en) * | 2016-12-14 | 2017-05-17 | 珠海格力智能装备有限公司 | Method and equipment for preparing adblue solution |
| CN114733336A (en) * | 2022-04-08 | 2022-07-12 | 华润电力(宁武)有限公司 | System for preventing urea solution conveying pipeline from being blocked |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110914 |