CN202962292U - Device for preparing urea solution by constant volume process - Google Patents
Device for preparing urea solution by constant volume process Download PDFInfo
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- CN202962292U CN202962292U CN201220480306.8U CN201220480306U CN202962292U CN 202962292 U CN202962292 U CN 202962292U CN 201220480306 U CN201220480306 U CN 201220480306U CN 202962292 U CN202962292 U CN 202962292U
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- urea
- dissolving tank
- measuring chute
- constant volume
- granules
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Abstract
The utility model discloses a device for preparing urea solution by a constant volume process, and particularly relates to a device for preparing reducing agent urea solution suitable for flue gas denitrification of a large power station boiler. The device comprises a urea particle metering bin and a urea dissolving tank, of which the effective volume is respectively configured in advance according to the preset ratio, and a water tank which is communicated with the urea dissolving tank, wherein an opening with a valve is formed at the lower end of the urea particle metering bin; and the urea dissolving tank is arranged below the urea particle metering bin. The device can simply, conveniently and rapidly prepare the required urea solution according to the preset concentration of the solution.
Description
Technical field
The utility model relates to a kind of reducing agent urea solution preparing device that the denitrating flue gas such as large-sized station boiler, waste heat boiler are used that is applicable to.
Background technology
Urea is a kind of green fertilizer, can betransported easily, stores and use, and at present, urea is adopted more and more in a large number as power station or industrial burning device denitrating flue gas reducing agent.
Urea need to be prepared into solution and be stored as denitrification reducing agent.Present urea usually is prepared to 8-15%Wt. or two kinds of concentration of 50%Wt. store.
The 8-15%Wt. urea liquid, because urea concentration is too low, urea liquid storage volumes and floor space all will increase, and cause cost of investment too high.The urea liquid of 50%Wt., because solution concentration is too high, urea liquid and urea liquid store and all need to pass into steam and prevent urea crystals, separate out to improve the urea liquid temperature, and dissolving and reservoir vessel shell also need insulation, make investment and operation energy consumption too high.
The inventor herein studies discovery, prepares by mass percentage the urea liquid of 32.5%Wt., and its crystallization temperature is minimum, reaches under-11.5 ℃ of environment temperatures, and the urea granules in solution can crystallization, and can steady in a long-termly store.
The utility model content
The purpose of this utility model is: a kind of constant volume method urea solution preparing device is proposed, and can be simply, prepare required urea liquid according to default solution concentration easily and quickly.
The purpose of this utility model realizes by following technical proposals:
A kind of constant volume method urea solution preparing device, the urea granules measuring chute and the urea dissolving tank that comprise pre-configured dischargeable capacity separately, and the water tank that is communicated with described urea dissolving tank, described urea granules measuring chute lower end is provided with the opening with valve, and described urea dissolving tank is positioned at below described urea granules measuring chute.
As optimal way, the proportionate relationship of described urea granules measuring chute and urea dissolving tank dischargeable capacity is: the urea granules of the whole dischargeable capacitys of described urea granules measuring chute is put into described urea dissolving tank, and the concentration of urea liquid is 32.5 ± 2.5%Wt. when being configured to the urea liquid of the whole dischargeable capacitys of described urea dissolving tank.
As optimal way, described urea granules measuring chute is positioned at directly over described urea dissolving tank.
In such scheme, after Open valve, the urea granules in the urea granules measuring chute directly falls into the urea dissolving tank of below, need not interface channel.
As optimal way, be communicated with by the urea granules transfer passage between described urea granules measuring chute and urea dissolving tank.
In such scheme, after Open valve, the urea granules in the urea granules measuring chute falls into the urea dissolving tank of below by passage, and both installation sites can be more flexible, need not directly up and down correspondence.
As optimal way, described urea granules measuring chute is the tapered barrel chamber structure.
As optimal way, described urea dissolving tank also is provided with agitator.
As optimal way, also comprise the urea liquid storage tank that is communicated with described urea dissolving tank by pump and pipeline.
Workflow of the present utility model:
As the urea concentration by 32.5 ± 2.5%Wt., calculating in advance and design urea granules measuring chute and urea dissolving tank (is 5m as effective volume
3Urea granules (bulk density 750kg/m
3) the corresponding dischargeable capacity of warehouse is 10.6m
3The urea dissolving tank).
Urea granules carries (or bucket elevator lifting) to the urea granules measuring chute by tank car by strength, and urea granules measuring chute structure is the tapered barrel chamber structure.Pass through Open valve, expect in the urea dissolving tank under whole urea granules in the urea granules measuring chute are disposable, until the complete rear water that begins to inject from water tank of whole urea granules blankings, along with adding of water, the liquid level of urea dissolving tank constantly raises, the startup agitator stirs after the liquid level in the urea dissolving tank reach a certain height, and accelerates the urea granules dissolving, reaches the 10.6m of regulation when the liquid level of whole dissolving tank
3Stop adding water during dischargeable capacity, the urea liquid preparation of 32.5%Wt. is completed.Start pump, urea liquid is delivered in the urea liquid storage tank stored.
The beneficial effects of the utility model: can be simply, prepare required urea liquid according to default solution concentration easily and quickly.As configuring 32.5 %Wt., density is 1090kg/m
3Urea liquid the time, the urea liquid crystalline temperature is minimum, reaches-11.5 ℃, can effectively prevent urea granules crystallization in urea liquid, separate out; But urea liquid storage tank outdoor arrangement, solution can store steadily in the long term; Urea dissolving and storage need not to arrange heating facility (as passing into Steam Heating) and improve solution temperature, have saved operation energy consumption and running cost; Urea liquid stores and need not to arrange agitator and outer insulation, has saved cost of investment.Be applicable to the reducing agent urea solution preparation that the denitrating flue gas such as large-sized station boiler, waste heat boiler are used, can reach operation energy consumption and the cost of investment purpose of saving the urea dissolving and storing.
Description of drawings
Fig. 1 is the device schematic flow sheet of the utility model embodiment.
The specific embodiment
Below in conjunction with specific embodiments and the drawings, the utility model is further described.
As shown in Figure 1, the urea concentration as by 32.5 ± 2.5%Wt calculates and designs urea granules measuring chute 12 and urea dissolving tank 32 in advance.The proportionate relationship of urea granules measuring chute 12 and urea dissolving tank 32 dischargeable capacitys is: the urea granules of urea granules measuring chute 12 whole dischargeable capacitys is put into urea dissolving tank 32, and when being configured to the urea liquid of urea dissolving tank 32 whole dischargeable capacitys, in it, concentration of urea liquid is that 32.5 ± 2.5%Wt.(such as effective volume are 5m
3Urea granules measuring chute (bulk density 750kg/m
3) corresponding dischargeable capacity is 10.6m
3The urea dissolving tank).
Urea granules 11 carries (or bucket elevator lifting) to urea granules measuring chute 12 by tank car by strength, and urea granules measuring chute 12 structures are the tapered barrel chamber structure.Urea granules measuring chute 12 is positioned at directly over urea dissolving tank 32.At this moment, after opening push-pull valve 13, the urea granules in urea granules measuring chute 12 directly falls into the urea dissolving tank 32 of below, need not interface channel.Perhaps, be communicated with by the urea granules transfer passage between urea granules measuring chute 12 and urea dissolving tank 32.At this moment, after opening push-pull valve 13, the urea granules in urea granules measuring chute 12 falls into the urea dissolving tank 32 of below by passage, and both installation sites can be more flexible, need not directly corresponding up and down.
By opening the valve of push-pull valve 13(or similar functions), expect in urea dissolving tank 32 under whole urea granules 11 in urea granules measuring chute 12 are disposable, until the complete rear water 21 that begins to inject from water tank 23 of whole urea granules blankings, along with adding of water, the liquid level of urea dissolving tank constantly raises, startup agitator 33 stirs after the liquid level in the urea dissolving tank reach a certain height, and accelerates the urea granules dissolving, reaches the 10.6m of regulation when the liquid level of whole dissolving tank
3Stop adding water during dischargeable capacity, the urea liquid preparation of 32.5%Wt. is completed.Start pump 34, urea liquid 31 is delivered to storage in urea liquid storage tank 4.
The above is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (7)
1. constant volume method urea solution preparing device, it is characterized in that: the urea granules measuring chute and the urea dissolving tank that comprise pre-configured dischargeable capacity separately, and the water tank that is communicated with described urea dissolving tank, described urea granules measuring chute lower end is provided with the opening with valve, and described urea dissolving tank is positioned at below described urea granules measuring chute.
2. constant volume method urea solution preparing device as claimed in claim 1, it is characterized in that: the proportionate relationship of described urea granules measuring chute and urea dissolving tank dischargeable capacity is: the urea granules of the whole dischargeable capacitys of described urea granules measuring chute is put into described urea dissolving tank, and when being configured to the urea liquid of the whole dischargeable capacitys of described urea dissolving tank, the concentration of urea liquid is 32.5 ± 2.5%Wt..
3. constant volume method urea solution preparing device as claimed in claim 1, it is characterized in that: described urea granules measuring chute is positioned at directly over described urea dissolving tank.
4. constant volume method urea solution preparing device as claimed in claim 1, is characterized in that: be communicated with by the urea granules transfer passage between described urea granules measuring chute and urea dissolving tank.
5. constant volume method urea solution preparing device as claimed in claim 1, it is characterized in that: described urea granules measuring chute is the tapered barrel chamber structure.
6. constant volume method urea solution preparing device as claimed in claim 1, it is characterized in that: described urea dissolving tank also is provided with agitator.
7. constant volume method urea solution preparing device as claimed in claim 1, is characterized in that: also comprise the urea liquid storage tank that is communicated with described urea dissolving tank by pump and pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220480306.8U CN202962292U (en) | 2012-09-20 | 2012-09-20 | Device for preparing urea solution by constant volume process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220480306.8U CN202962292U (en) | 2012-09-20 | 2012-09-20 | Device for preparing urea solution by constant volume process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202962292U true CN202962292U (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220480306.8U Expired - Lifetime CN202962292U (en) | 2012-09-20 | 2012-09-20 | Device for preparing urea solution by constant volume process |
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| Country | Link |
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| CN (1) | CN202962292U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104147975A (en) * | 2014-08-07 | 2014-11-19 | 国家电网公司 | Automatic equipment capable of directly adding SNCR denitration agent and preparation method of SNCR denitration agent |
| CN105536635A (en) * | 2016-02-02 | 2016-05-04 | 珠海格力智能装备有限公司 | Adblue feeding device |
| CN105536622A (en) * | 2016-02-01 | 2016-05-04 | 珠海格力智能装备有限公司 | Vehicle urea machine |
| CN105536634A (en) * | 2016-02-01 | 2016-05-04 | 珠海格力智能装备有限公司 | Vehicle urea machine |
-
2012
- 2012-09-20 CN CN201220480306.8U patent/CN202962292U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104147975A (en) * | 2014-08-07 | 2014-11-19 | 国家电网公司 | Automatic equipment capable of directly adding SNCR denitration agent and preparation method of SNCR denitration agent |
| CN105536622A (en) * | 2016-02-01 | 2016-05-04 | 珠海格力智能装备有限公司 | Vehicle urea machine |
| CN105536634A (en) * | 2016-02-01 | 2016-05-04 | 珠海格力智能装备有限公司 | Vehicle urea machine |
| CN105536635A (en) * | 2016-02-02 | 2016-05-04 | 珠海格力智能装备有限公司 | Adblue feeding device |
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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 |
Granted publication date: 20130605 |
|
| CX01 | Expiry of patent term |