CN205461088U - Can effectively reduce urea solution vaporization system of biuret content - Google Patents
Can effectively reduce urea solution vaporization system of biuret content Download PDFInfo
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- CN205461088U CN205461088U CN201620067829.8U CN201620067829U CN205461088U CN 205461088 U CN205461088 U CN 205461088U CN 201620067829 U CN201620067829 U CN 201620067829U CN 205461088 U CN205461088 U CN 205461088U
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- urine
- urea solution
- urea
- biuret
- storage tank
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Abstract
The utility model discloses a can effectively reduce urea solution vaporization system of biuret content, including flash drum, urea solution storage tank and urine pump, set up the longitudinal baffle in the urea solution storage tank, this longitudinal baffle separates into the cavity of two different volumes size with the urea solution storage tank, there is the distance between the top of longitudinal baffle and the top of urea solution storage tank to make the upper end of two cavities communicate, the urine export of flash drum is through the less cavity intercommunication of urine pipe and volume, the lower part of the less cavity of volume is provided with the urine export, and this urine export links to each other through pipeline and urine pump. The utility model discloses do not increasing any equipment, do not change the condition of technology under, improve the urine storage tank for biuret in the urea product obtains effectual reduction, has promoted the quality of product, has reduced the influence of biuret to crops, reforms transform with low costsly.
Description
Technical field
This utility model relates to a kind of urea liquid vapo(u)rization system that can effectively reduce Biuret Content, belonging to
Work process equipment applications.
Background technology
The technological process of urea production is: the CO being vented out from synthesis ammonia decarbonization system2Through compressor pressure
It is reduced to 15MPa and enters dehydrogenation reactor system, the CO after dehydrogenation2Enter synthesis and stripping operation.Synthetic ammonia installation
Synthesis system conveying come liquefied ammonia be pressurized to 16MPa through high-pressure ammonia pump, subsequently into synthesis with stripping operation with
CO2Reaction generates urea liquid, and now in urea liquid, the concentration of carbamide is 55.6% (wt), from synthesis and vapour
Carry operation urea liquid out and enter back into circulating process, by urine is heated, reclaim in urine and decomposite
The NH come3And CO2After, in urea liquid, the concentration of carbamide is concentrated into 73.57% (wt), and last carbamide is molten
Liquid enters evaporation and granulating working procedure produces qualified urea product.
The detailed process flow of evaporization process: the urea liquid of flash tank enters in urea solution tank, urea solution tank
In urea liquid (urea content: 73.57% (wt)) by urea solution pump (urine pump) urine is defeated
Deliver to primary evaporator heater, add the low-pressure steam of 0.4MP6a, one section of steaming to the shell-side of evaporation heater
Sending out heater shell-side temperature and control at 125-130 DEG C, urea liquid is subsequently into one section of vapor seperator, at this
It is concentrated to 95% (wt), enters two-section evaporating heater, to two from one section of vapor seperator urine out
The shell-side of section evaporation heater adds the low-pressure steam of 0.8MP6a, and two-section evaporating heater shell-side temperature controls
At 135-140 DEG C, urea liquid, subsequently into dual circulation separator, is concentrated to 99.7% at this urea liquid
(wt), carrying out pelletize subsequently into granulation tower, qualified urea product out enters finished product bottom granulation tower
Warehouse carries out packaging and takes out.
The urea product that this urea plant is produced is inevitably unreasonable etc. due to flow scheme design, causes
In the finished product produced, biuret exceeds standard, and affects product quality, very arrives and does not reaches high-class product.Biuret is
The important indicator of urea production, peasant uses the fertilizer that biuret exceeds standard, and can cause burn seedlings, affect crops
Normal growth.So, owing to product quality declines, use of can only demoting, product price can decline,
Also adverse effect is brought to Business Economic Benefit.
Utility model content
In order to solve above-mentioned technical problem, this utility model provides a kind of urine that can effectively reduce Biuret Content
Cellulose solution vapo(u)rization system.
To achieve these goals, the technical solution of the utility model is as follows: one can effectively reduce biuret
The urea liquid vapo(u)rization system of content, including flash tank, urea solution tank and urine pump, it is characterised in that:
Arranging longitudinal baffle in described urea solution tank, urea solution tank is divided into two differences by this longitudinal baffle
The chamber of volume size, has distance between top and the top of urea solution tank of described longitudinal baffle, from
And the upper end of two chambers is connected, the urine outlet of described flash tank is by catheter and small volume
Chamber, the bottom of the chamber of described small volume is provided with urine outlet, and this urine outlet passes through pipeline
It is connected with urine pump.
Use such scheme, urine storage tank is divided into two small one and large one chambers, from flash tank urine out
Liquid is directly entered the chamber that volume is little, substantially reduces the urea liquid time of staying at urine storage tank, reduces
The generation of biuret in this holding process.Meanwhile, when occurring producing abnormal, due to two chamber,
The chamber that volume is bigger still can play the effect of buffer storage.
Preferred: wherein the volume of the chamber of smaller size smaller be whole urea solution tank volume ten/
1/1 to nine.After this utility model technological transformation, in the urea liquid of urea solution tank outlet
The content of biuret falls below 0.34wt% from original 0.37wt%, reduces biuret in finished urea
0.04% (in product, biuret reduces this number, has been to be difficult to accomplish), improves the quality of product,
Reduce the biuret impact on crops, add the economic benefit of enterprise.
Beneficial effect: this utility model is not increasing any equipment, under conditions of not changing technique, to urine
Storage tank improves so that the biuret in urea product is effectively reduced, and improves the quality of product,
Reducing the biuret impact on crops, improvement cost is low.
Accompanying drawing explanation
Fig. 1 is process chart of the present utility model.
Detailed description of the invention
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings:
Embodiment 1, as shown in Figure 1: a kind of carbamide that can effectively reduce Biuret Content of the present utility model is molten
Liquid vapo(u)rization system is added by flash tank 1, urea solution tank 2, urine pump 3,4, one section of evaporation of longitudinal baffle
Hot device 5 grade forms.
The structure of flash tank 1 is prior art, and the urea liquid from rectifying column enters flash tank 1, Jing Guoshan
After steaming, urea liquid enters urea solution tank 2, and flash steam removes one section of vapotron.Urea solution tank
Arranging longitudinal baffle 4 in 2, urea solution tank 2 is divided into two different volumes sizes by this longitudinal baffle 4
Chamber, preferably wherein the volume of the chamber of smaller size smaller be whole urea solution tank 2 volume ten/
1/1 to nine.The most more can effectively shorten the time of staying.
Distance is had between top and the top of urea solution tank 2 of longitudinal baffle 4, so that two chambeies
The upper end connection of room, the urine outlet of flash tank 1 is by the chamber of catheter with small volume, the meaning
It is that the urea liquid import of urea solution tank 2 is arranged on the top of the chamber of small volume.Small volume
The bottom of chamber be provided with urine outlet, this urine outlet is connected with urine pump 3 by pipeline.Urine pump 3
Being connected with primary evaporator heater 5, primary evaporator heater 5 urea liquid out goes one section of evaporation to separate
Device, subsequent technique is prior art, does not repeats at this.
This utility model is not limited to above-mentioned specific embodiment, it will be appreciated that those of ordinary skill in the art
Just many modifications and variations can be made according to design of the present utility model without creative work.In a word, all
Technical staff is divided by logic on the basis of existing technology according to design of the present utility model in the art
Analysis, reasoning or the available technical scheme of limited experiment, all should be defined in the patent claims
In protection domain.
Claims (2)
1. can effectively reduce a urea liquid vapo(u)rization system for Biuret Content, including flash tank (1), urine
Cellulose solution storage tank (2) and urine pump (3), it is characterised in that: arrange in described urea solution tank (2)
Longitudinal baffle (4), urea solution tank (2) is divided into two different volumes sizes by this longitudinal baffle (4)
Chamber, have distance between top and the top of urea solution tank (2) of described longitudinal baffle (4),
So that the upper end connection of two chambers, the urine outlet of described flash tank (1) passes through catheter and volume
Less chamber, the bottom of the chamber of described small volume is provided with urine outlet, and this urine outlet leads to
Piping is connected with urine pump (3).
The most according to claim 1, can effectively reduce the urea liquid vapo(u)rization system of Biuret Content, it is special
Levy and be: wherein the volume of the chamber of smaller size smaller be whole urea solution tank (2) volume ten/
1/1 to nine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620067829.8U CN205461088U (en) | 2016-01-22 | 2016-01-22 | Can effectively reduce urea solution vaporization system of biuret content |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620067829.8U CN205461088U (en) | 2016-01-22 | 2016-01-22 | Can effectively reduce urea solution vaporization system of biuret content |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205461088U true CN205461088U (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620067829.8U Active CN205461088U (en) | 2016-01-22 | 2016-01-22 | Can effectively reduce urea solution vaporization system of biuret content |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113582882A (en) * | 2021-07-28 | 2021-11-02 | 安徽晋煤中能化工股份有限公司 | Method for reducing biuret content in industrial urea and production device thereof |
-
2016
- 2016-01-22 CN CN201620067829.8U patent/CN205461088U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113582882A (en) * | 2021-07-28 | 2021-11-02 | 安徽晋煤中能化工股份有限公司 | Method for reducing biuret content in industrial urea and production device thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |