CN215876478U - Coking crude ammonia water purifying device - Google Patents
Coking crude ammonia water purifying device Download PDFInfo
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- CN215876478U CN215876478U CN202122318425.5U CN202122318425U CN215876478U CN 215876478 U CN215876478 U CN 215876478U CN 202122318425 U CN202122318425 U CN 202122318425U CN 215876478 U CN215876478 U CN 215876478U
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- ammonia water
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- tank
- crude ammonia
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Abstract
The utility model discloses a coking crude ammonia water purification device, which comprises a crude ammonia water tank connected with a crude ammonia water outlet of a front-end Frsum method production device product, wherein the crude ammonia water tank is connected with a filter through an ammonia water delivery pump; an outlet pipe of the ammonia purification pump is connected with the filter through a backwashing pipe, a backwashing outlet pipe of the filter is connected with a backwashing waste liquid tank, and the backwashing waste liquid tank is connected with a rich liquid system of a Frsamm method device at the front end through a backwashing waste liquid pump. Compared with the prior art, the utility model can solve the problems that the crude ammonia water of the existing Frsamm coke oven coal has high impurity content, blocks pipeline equipment and pollutes the environment.
Description
Technical Field
The utility model relates to the technical field of steel manufacturing equipment, in particular to a crude ammonia water purification device for coke oven gas by a Frsamm method.
Background
The process and the device for recovering ammonia from the coke oven gas by the Frsamm method are used for producing anhydrous ammonia in a three-tower mode, but the process has large energy consumption of medium-high pressure steam, high requirements on the storage and transportation safety of the anhydrous ammonia, high investment and limited domestic popularization and application for a long time. In recent years, the two-tower non-standard Frama method coke oven gas ammonia recovery process for producing the crude ammonia water by a rectification section is cancelled, and the process is greatly popularized in the coking industry. Although the nonstandard non-rectification process overcomes the defects of the standard Frsamm process, the produced crude ammonia water has deep quality and high chroma and high suspended matter content, so that a user production device using the crude ammonia water as a raw material is easy to cause the problems of pipeline and equipment blockage, working medium pollution and the like, and the quality of the crude ammonia water needs to be improved so as to enlarge the outlet of the crude ammonia water.
Disclosure of Invention
The utility model aims to solve the problem that the coking crude ammonia water purification device is provided to solve the problems that the existing Frsamm method coke oven coal crude ammonia water contains high impurities, blocks pipeline equipment and pollutes the environment.
In order to solve the problems, the technical scheme of the utility model is as follows: the coking crude ammonia water purification device comprises a crude ammonia water tank connected with a crude ammonia water outlet of a front-end Freman method device product, wherein the crude ammonia water tank is connected with a filter through an ammonia water delivery pump, a purified ammonia water outlet pipe of the filter is connected with a purified ammonia water tank, and the purified ammonia water tank is connected with a user interface through a purified ammonia water pump; an outlet pipe of the ammonia purification pump is connected with the filter through a backwashing pipe, a backwashing outlet pipe of the filter is connected with a backwashing waste liquid tank, and the backwashing waste liquid tank is connected with a rich liquid system of a Frsamm method device at the front end through a backwashing waste liquid pump. Stabilization
In the above technical solution, a more specific solution may be: the filter comprises a primary filter and a secondary filter which are connected in series.
Further: the purified ammonia water outlet pipe is arranged on the secondary filter; the back flushing pipe is respectively connected with the primary filter and the secondary filter.
Further: the back-washing outlet pipe is arranged on the primary filter.
Further: the crude ammonia water tank, the ammonia purification water tank and the back flushing waste liquid tank are all connected with an ammonia gas cleaning tank.
Due to the adoption of the technical scheme, compared with the prior art, the utility model has the following beneficial effects:
according to the coking crude ammonia water purification device, crude ammonia water is firstly depressurized, and then the flow speed is stabilized through constant flow, so that adverse factors for damaging a filter bed layer are eliminated, and the product quality stability is good; impurities separated from the crude ammonia water do not enter a crude ammonia water system, the impurities have no accumulation effect in the process, and the separation effect of the process can be kept stable for a long time; volatile ammonia gas of each liquid phase storage device is collected in a centralized manner, and is treated by using related process raw materials, so that the efficiency is high, and no secondary pollution is caused; the process principle is simple, the system operates under the conditions of normal temperature and low pressure, and the operation safety is excellent; the process control is simple, the automation degree is high, and the labor intensity of personnel is low; the process has less energy consumption and low operation cost, and effectively solves the problem that the quality of the crude ammonia water is insufficient to influence the production stability of users.
Drawings
FIG. 1 is a schematic structural view of the present embodiment;
wherein: 1. a crude ammonia tank; 2. an ammonia water delivery pump, 3, a first-stage filter; 4. a secondary filter; 5. a purified ammonia water tank; 6. a purified ammonia pump; 7. back flushing the waste liquid tank; 8. back flushing a waste liquid pump; 9. an ammonia gas cleaning tank; 10. a backwash pipe; 11. a purified ammonia water outlet pipe; 12. and back flushing the outlet pipe.
Detailed Description
The embodiments of the utility model will be described in further detail with reference to the accompanying drawings:
the coking crude ammonia water purification device shown in figure 1 comprises a crude ammonia water tank 1 connected with a crude ammonia water outlet of a front-end Frsum method production device product, wherein the crude ammonia water tank 1 is connected with a filter through an ammonia water delivery pump 2, and the filter comprises a primary filter 3 and a secondary filter 4 which are connected in series. The purified ammonia water outlet pipe 11 of the filter is connected with a purified ammonia water tank 5, and the purified ammonia water tank 5 is connected with a user outlet through a purified ammonia water pump 6. The crude ammonia water produced by the Frsamm method is continuously conveyed to a crude ammonia water tank 1 by the residual pressure of a production system, and is continuously conveyed by a crude ammonia water conveying pump 2 to pass through a primary filter 3 and a secondary filter 4, wherein the primary filter 3 comprises a 1#, a 2# … n #, the secondary filter 4 comprises a 1#, a 2# … m #, the purified ammonia water after filtration and purification enters a purified ammonia water tank 5, and finally is continuously conveyed to a user by a purified ammonia water pump 6. The crude ammonia water produced by the Fraxm method is reduced in flow rate in a crude ammonia water tank 1 to 0.75-1 m/h, is controlled to 4.5-9 m/h by a crude ammonia water delivery pump, and flows through a bed layer formed in a free stacking mode in a primary filter 3 and a secondary filter 4, so that the stability of the filter bed layer is not damaged, and the continuous and stable quality of purified ammonia water at the outlet of the secondary filter 4 is ensured.
The water outlet pipe of the ammonia purification pump 6 is connected with the filter through a backwashing pipe 10, the backwashing outlet pipe 12 of the filter is connected with a backwashing waste liquid tank 7, and the backwashing waste liquid tank 7 is connected with a rich liquid system of a Frsamum method device at the front end through a backwashing waste liquid pump 8. The outlet of the secondary filter 4 is connected with a purified ammonia water tank 5; the backwashing pipe 10 is respectively connected with the primary filter 3 and the secondary filter 4, and the backwashing outlet pipe 12 is arranged on the primary filter 3 and is connected with the backwashing waste liquid tank 7 through the backwashing outlet pipe 12. Impurities filtered by the first-stage filter 3 and the second-stage filter 4 are intermittently back-flushed by the purified ammonia water at the outlet of the purified ammonia water pump 6, and the obtained waste liquid enters a back-flushing waste liquid tank 7 and is intermittently conveyed back to a rich liquid system of a front end Frsamum method production device for redistillation through a back-flushing waste liquid pump 8. The primary filter 3 and the secondary filter 4 are used and reserved and are washed by back flushing in turn; the quantity can be increased or decreased according to the productivity so as to ensure that the quality of the outlet pure ammonia water is stable and matched with the productivity. The primary filter 3 and the secondary filter 4 continuously operate to purify the crude ammonia water, the impurities separated by filtration are intermittently back-washed by the purified ammonia water, and the yield of the purified ammonia water is more than or equal to 98 percent. The primary filter 3 and the secondary filter 4 can be switched between an on-use system and a standby system on line in a seamless way, and the purified ammonia water production system is continuous and stable.
The crude ammonia water tank 1, the purified ammonia water tank 5 and the backflushing waste liquid tank 7 are all connected with an ammonia gas cleaning tank 9, and ammonia gas in the head spaces of the crude ammonia water tank 1, the purified ammonia water tank 5 and the backflushing waste liquid tank 7 is returned to the ammonia gas cleaning tank 9 through pipelines to be absorbed by diammonium phosphate solution and does not escape into the environment. The ammonia water pipeline inlets of the crude ammonia water tank 1, the purified ammonia water tank 5 and the backflushing waste liquid tank 8 are kept below the liquid level of the ammonia water, so that the ammonia water is prevented from being suddenly depressurized, atomized and volatilized.
According to the coking crude ammonia water purification device, crude ammonia water is firstly depressurized, and then the flow speed is stabilized through constant flow, so that adverse factors for damaging a filter bed layer are eliminated, and the product quality stability is good; impurities separated from the crude ammonia water do not enter a crude ammonia water system, the impurities have no accumulation effect in the process, and the separation effect of the process can be kept stable for a long time; volatile ammonia gas of each liquid phase storage device is collected in a centralized manner, and is treated by using related process raw materials, so that the efficiency is high, and no secondary pollution is caused; the process principle is simple, the system operates under the conditions of normal temperature and low pressure, and the operation safety is excellent; the process control is simple, the automation degree is high, and the labor intensity of personnel is low; the process has less energy consumption and low operation cost, and effectively solves the problem that the quality of the crude ammonia water is insufficient to influence the production stability of users. By using the device and the method, the crude ammonia water produced by the Frsum method can be used for obtaining the pure ammonia water through the operation of the bed layer filtering unit, and the quality of the pure ammonia water reaches the level that the chromaticity is less than or equal to 300, the light transmittance is more than or equal to 80 percent, and the suspended matter is less than or equal to 10 mg/l.
Claims (5)
1. The utility model provides a coking crude ammonia water purifier which characterized in that: the system comprises a coarse ammonia water tank connected with a coarse ammonia water outlet of a front-end Freman method production device product, wherein the coarse ammonia water tank is connected with a filter through an ammonia water delivery pump, a purified ammonia water outlet pipe of the filter is connected with a purified ammonia water tank, and the purified ammonia water tank is connected with a user interface through a purified ammonia water pump; the water outlet pipe of the ammonia purification pump is connected with the filter through a backwashing pipe, the backwashing outlet pipe of the filter is connected with a backwashing waste liquid tank, and the backwashing waste liquid tank is connected with a rich liquid system of a Frsamum method device at the front end through a backwashing waste liquid pump.
2. The coked crude ammonia water purification device according to claim 1, characterized in that: the filter comprises a primary filter and a secondary filter which are connected in series.
3. The coking crude ammonia water purification device according to claim 2, characterized in that: the purified ammonia water outlet pipe is arranged on the secondary filter; the back flushing pipe is respectively connected with the primary filter and the secondary filter.
4. The coking crude ammonia water purification device according to claim 3, characterized in that: the back-washing outlet pipe is arranged on the primary filter.
5. The coked crude ammonia water purification apparatus according to any one of claims 1 to 4, characterized in that: the crude ammonia water tank, the ammonia purification water tank and the back flushing waste liquid tank are all connected with an ammonia gas cleaning tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122318425.5U CN215876478U (en) | 2021-09-24 | 2021-09-24 | Coking crude ammonia water purifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122318425.5U CN215876478U (en) | 2021-09-24 | 2021-09-24 | Coking crude ammonia water purifying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215876478U true CN215876478U (en) | 2022-02-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122318425.5U Active CN215876478U (en) | 2021-09-24 | 2021-09-24 | Coking crude ammonia water purifying device |
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| Country | Link |
|---|---|
| CN (1) | CN215876478U (en) |
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2021
- 2021-09-24 CN CN202122318425.5U patent/CN215876478U/en active Active
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