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Green and environmental-friendly nitrate production process

A production process, green and environmental protection technology, applied in the field of green and environmental protection nitrate production process, can solve problems such as affecting the ecological environment, environmental pollution, etc., and achieve the effects of reducing pollution, reducing energy consumption, and being environmentally friendly

Inactive Publication Date: 2019-03-19
HUAIAN HONGYUN SALT CHEM CO LTD CNSIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a green and environment-friendly nitrate production process, which solves the problem that the existing nitrate production process pollutes the nearby environment and affects the nearby ecological environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of green environmental protection nitrate production technology, comprises the following steps:

[0034] Step A: filtering, collecting the nitric water containing potassium nitrate, sodium nitrate and sodium sulfate through the collection equipment, and cleaning the impurities and waste in the collected water through the filter layer;

[0035] Step B: Take the material, transport the filtered feed liquid into the feed pool through the water pump, and process and evaporate the feed liquid through the mechanical recompression evaporator to obtain sodium sulfate and nitric acid mother liquor. The temperature in the mechanical recompression evaporator is 90 ℃, the heat processing time is 8min, and the component content in the filtered feed liquid is: Na 2 SO 4 —120g / L, NaCl—240g / L, the material liquid content after being processed and evaporated by the mechanical recompression evaporator is: NaCl 2 SO 4 —50g / L, NaCl—280g / L;

[0036] Step C: Collect, collect seawa...

Embodiment 2

[0045] A kind of green environmental protection nitrate production technology, comprises the following steps:

[0046] Step A: filtering, collecting the nitric water containing potassium nitrate, sodium nitrate and sodium sulfate through the collection equipment, and cleaning the impurities and waste in the collected water through the filter layer;

[0047] Step B: Take the material, transport the filtered feed liquid into the feed pool through the water pump, and process and evaporate the feed liquid through the mechanical recompression evaporator to obtain sodium sulfate and nitric acid mother liquor. The temperature in the mechanical recompression evaporator is 120 ℃, the heat processing time is 7min, and the component content in the filtered feed liquid is: Na 2 SO 4 —50g / L, NaCl—150g / L, the material liquid content after being processed and evaporated by the mechanical recompression evaporator is: NaCl 2 SO 4 —45g / L, NaCl—270g / L;

[0048] Step C: Collect, collect seawa...

Embodiment 3

[0057] A kind of green environmental protection nitrate production technology, comprises the following steps:

[0058] Step A: filtering, collecting the nitric water containing potassium nitrate, sodium nitrate and sodium sulfate through the collection equipment, and cleaning the impurities and waste in the collected water through the filter layer;

[0059] Step B: Take the material, transport the filtered feed liquid into the feed pool through the water pump, and process and evaporate the feed liquid through the mechanical recompression evaporator to obtain sodium sulfate and nitrate mother liquor. The temperature in the mechanical recompression evaporator is 150 ℃, the heat processing time is 9min, and the component content in the filtered feed liquid is: Na 2 SO 4 —76g / L, NaCl—280g / L, the material liquid content after being processed and evaporated by the mechanical recompression evaporator is: NaCl 2 SO 4 —71g / L, NaCl—284g / L;

[0060] Step C: Collect, collect seawater ...

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PUM

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Abstract

The invention discloses a green and environmental-friendly nitrate production process and relates to the technical field of chemical industry. The process comprises the following steps: A, filtering;B, taking materials; C, collecting; D, mixing; E, stirring; F, processing; G, controlling the temperature; H, refining; I, evaporating; and J, producing. According to the process disclosed by the invention, the feed liquid is processed and evaporated by a mechanical recompression evaporator, secondary steam produced in the mechanical recompression evaporator is compressed by a compressor, the pressure and temperature are increased, the enthalpy is increased, and the steam is fed into a heating chamber of the evaporator to serve as heating steam, so that the feed liquid is maintained at a boiling state, while the heating steam is condensed into water. Therefore, the original waste steam is fully utilized, the latent heat is recovered, the thermal efficiency is improved, the requirements onexternal heating and cooling resources are reduced, the energy consumption is reduced, and the pollution is reduced.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a green and environment-friendly nitrate production process. Background technique [0002] Nitrates are white powdery solids, typically sodium nitrate and sodium nitrite. Nitrate is a white powdery solid, usually sodium nitrate and sodium nitrite. This substance can play a role in antiseptic, so it can be used as a preservative, but excessive intake can cause cancer, and it is a strong carcinogen. Among them, sodium nitrite is sometimes used as a building material, and its taste is similar to sodium chloride (salt), and even tastes more delicious than sodium chloride, but excessive intake will cause poisoning. [0003] At present, in the traditional production process of nitrate salt, it is necessary to use a large amount of steam as energy to separate nitrate salt by thermal method. In the production process, a large-scale heating boiler needs to be built. The steam c...

Claims

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Application Information

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IPC IPC(8): C01D5/00C01D3/06
CPCC01D3/06C01D5/00Y02P20/10
Inventor 李立王宇晓季连强贝鑫张平岳明泽
Owner HUAIAN HONGYUN SALT CHEM CO LTD CNSIC