Coking crude ammonia water purification method

A technology of ammonia water and coking, applied in chemical instruments and methods, separation methods, filtration and separation, etc., can solve the problems of high impurity content in crude ammonia water, pollute the environment, block pipeline equipment, etc., achieve simple process principle, low operating cost, low consumption The effect of less energy

Active Publication Date: 2021-12-07
LIUZHOU IRON & STEEL
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  • Description
  • Claims
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Problems solved by technology

[0003] The problem to be solved by the present invention is to provide a method for purifying coking crude ammonia water, so as to solve the problems of high impurity content in the crude ammonia water of coke oven coal of the Forsum method, blockage of pipeline equipment, and pollution of the environment

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  • Coking crude ammonia water purification method

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Embodiment Construction

[0014] Embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings:

[0015] This coking crude ammonia water purification includes using a kind of coking crude ammonia water purification device to evolve the crude ammonia water in the rich liquid system of the Forsum method device, such as figure 1 The shown coking crude ammonia water purification device includes a crude ammonia water tank 1 with a crude ammonia water outlet connected to the front-end Fossom method production device. The crude ammonia water tank 1 is connected to a filter through an ammonia water delivery pump 2. The filter includes a series of First-level filter 3 and second-level filter 4, the first-level filter 3 includes 1#, 2#...n#, and the second-level filter 4 includes 1#, 2#...m#. The net ammonia water outlet pipe 11 of the filter is connected to the net ammonia water tank 5, and the net ammonia water tank 5 is connected to the user outlet th...

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Abstract

The invention discloses a coking crude ammonia water purification method. The method comprises the following steps: purifying crude ammonia water by using a coking crude ammonia water purification device; the coking crude ammonia water purification device comprises a crude ammonia water tank which is provided with a product crude ammonia water outlet connected with the front end of the Fossam method production device, the crude ammonia water tank is connected with a filter through an ammonia water conveying 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; and the purification method comprises the following steps: continuously conveying crude ammonia water produced by a phosam process to the crude ammonia water tank by residual pressure of a production system, continuously conveying the crude ammonia water to pass through the filter by the crude ammonia water conveying pump, feeding purified ammonia water subjected to filtration and purification into the purified ammonia water tank, and finally continuously conveying the purified ammonia water to a user by the purified ammonia water pump. According to the method, the quality of the crude ammonia water produced by the rectification-free Frixamer process can be effectively improved, and secondary pollution is avoided.

Description

technical field [0001] The invention relates to the technical field of iron and steel manufacturing equipment, in particular to a method for purifying crude ammonia water from coke oven gas in the Fursum process. Background technique [0002] The coke oven gas ammonia recovery process and its device of the Fossum method are three-tower anhydrous ammonia production, but because the process uses medium and high pressure steam, it consumes a lot of energy, and the storage and transportation of anhydrous ammonia have high safety requirements and high investment. For a long time, Domestic promotion and application are limited. In recent years, the two-tower non-standard Fossum method coke oven gas ammonia recovery process that has canceled the production of crude ammonia in the rectification section has been greatly promoted in the coking industry. Although the non-standard non-distillation process overcomes the shortcomings of the standard Fossum process, the quality of the cru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D35/00
CPCB01D35/00
Inventor 罗小华王永树黄飞平吴志福邹骏杨名红舒青平苏克林张吉林马吉科农欢吴鹏瑶
Owner LIUZHOU IRON & STEEL
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