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Process and device for producing ammonium sulfite and byproduct thiosulfate mixed nutrient solution

A technology for by-producing thiosulfate and ammonium sulfite is applied in the preparation of alkali metal sulfites, thiosulfate/dithionite/polythionite, combined devices, etc., and can solve complex processes. , high cost of thiosulfate fertilizer, sulfur easily produces sublimated sulfur and other problems

Pending Publication Date: 2021-06-18
SHANDONG TIANTAI STEEL PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] An object of the present invention is to provide a process and device for producing ammonium sulfite and by-product thiosulfate mixed nutrient solution to solve the problem of high cost of thiosulfate fertilizers.
[0016] Another object of the present invention is to solve the problems of large pollution and complicated process in the production of thiosulfate mixed nutrient solution in the prior art
[0017] Another object of the present invention is to solve the problem that when producing ammonium sulfite in the prior art, burning sulfur is easy to produce sublimated sulfur, and long-term operation is easy to block the problem of pipelines

Method used

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  • Process and device for producing ammonium sulfite and byproduct thiosulfate mixed nutrient solution
  • Process and device for producing ammonium sulfite and byproduct thiosulfate mixed nutrient solution
  • Process and device for producing ammonium sulfite and byproduct thiosulfate mixed nutrient solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Example 1. Such as Figure 1-3 Shown, the technique of producing ammonium sulfite and byproduct thiosulfate mixed nutrient solution is characterized in that, comprises the steps:

[0063] The sulfur is put into the sulfur incinerator 1 for combustion to produce flue gas rich in high-concentration sulfur dioxide gas; the flue gas enters the cyclone separation tower 2 for dust removal, and the flue gas after dust removal enters the heat exchanger 3 to reduce the temperature to 60-70 ℃; the flue gas enters the washing and purifying tower 4, and the structure of the washing and purifying tower 4 is similar to that of the cyclone separation tower 2, except that an atomizing nozzle 41 is arranged on the upper part, and the atomized water ejected by the atomizing nozzle 41 is used to remove the solids in the flue gas. The substance is washed; then the flue gas enters the first-level absorption tower 5, and the first-level absorption tower 5 includes at least a spray nozzle 10...

Embodiment 2

[0107] Example 2. Such as Figure 4-5 As shown, the difference between this embodiment and Embodiment 1 is that the liquid fertilizer generating kettle 24 is connected to the gas inlet of the secondary absorption tower 6 through a pipeline, and a vacuum pump 27 and a pressure stabilizing valve 28 are arranged on the pipeline; The device lowers the temperature of the sulfur incinerator, so that when the sulfur incinerator burns, the temperature of the furnace body is kept at 800 degrees Celsius, and the water vapor generated by the steam generator is passed into the mixed nutrient solution generating kettle to keep the liquid temperature in the mixed nutrient solution generating kettle within 60 minutes Slowly increase to 85 degrees Celsius, and pass the gas generated by the mixed nutrient solution generating kettle into the secondary absorption tower; continue to feed water vapor into the mixed nutrient solution generating kettle to make the liquid temperature in the mixed nut...

Embodiment 3

[0110] Example 3. Such as Figure 6-7 As shown, the difference between the present embodiment and Embodiment 1 is that the liquid fertilizer generating kettle 24 is connected to the gas inlet of the three-stage absorption tower 7 through a pipeline, and the pipeline is provided with a vacuum pump 27 and a pressure stabilizing valve 28; The alkali that generates kettle 24 is potassium hydroxide. A steam generator is used to cool down the sulfur incinerator, so that when the sulfur incinerator burns, the temperature of the furnace body is maintained at 760 degrees Celsius, and the water vapor generated by the steam generator is passed into the mixed nutrient solution generating kettle to make the liquid temperature in the mixed nutrient solution generating kettle Slowly rise to 82 degrees centigrade in 50 minutes, the gas that the mixed nutrient solution generating kettle generates is passed into the three-stage absorption tower; Continue to feed water vapor into the mixed nutr...

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Abstract

The invention discloses a process and a device for producing ammonium sulfite and a byproduct thiosulfate mixed nutrient solution, which are characterized in that sulfur-rich solid substances are combusted, generated flue gas enters a cyclone separation tower for dust removal, and the flue gas after dust removal enters a heat exchanger for cooling; then the flue gas enters a washing purification tower to be washed; the flue gas enters a first-stage absorption tower, a second-stage absorption tower and a third-stage absorption tower to be absorbed, obtained liquid is cooled and crystallized, and solid ammonium sulfite is separated out through a centrifugal machine in a neutralization tank; the liquid in the washing purification tower and the residual liquid in the neutralization tank enter a mixed nutrient solution generation kettle, a thionation reaction is performed to generate a thiosulfate mixed nutrient solution, and acid or alkali is added into the solution in the mixed nutrient solution generation kettle to adjust the pH value of the mixed nutrient solution; the flue gas is discharged after entering a water washing tower for washing. According to the process and device, the high-purity solid ammonium sulfite can be obtained, the byproduct thiosulfate mixed nutrient solution can be obtained, and the process and device have good special industrial application and prospects.

Description

technical field [0001] The invention relates to a process and device for producing mixed nutrient solution, in particular to a process and device for producing ammonium sulfite and by-product thiosulfate mixed nutrient solution. Background technique [0002] Sodium thiosulfate, sodium thiosulfate, also known as soda and sea wave, is monoclinic white crystalline powder, easily soluble in water, insoluble in alcohol, mainly used in the manufacture of tetraethyl lead, dye intermediates, etc. It can be used as a reducing agent in the electroplating industry such as silver extraction from ores, and a water purifying agent in water purification projects. In the textile industry, it is used as a dechlorinating agent for bleaching cotton fabrics, a sulfur dyeing agent for dyed wool fabrics, an anti-whitening agent for indigo dyes, and a dechlorinating agent for pulp. It is used as a detergent, disinfectant, and decolorizing agent in the pharmaceutical industry. Analytical reagents ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/75B01D50/00B01D53/50B01D53/58B01D53/73B01D53/79B01D53/96C01B17/64C01D5/14C05C3/00F23G7/00
CPCB01D53/79B01D53/96B01D53/501B01D53/75B01D53/50B01D53/58B01D53/73F23G7/00C01D5/14C01B17/64C05C3/00B01D2251/2062B01D2251/608B01D2251/206B01D2258/0283B01D2251/604B01D2251/512B01D50/40
Inventor 王华廷刘庆成魏庆魁陈美秀
Owner SHANDONG TIANTAI STEEL PLASTIC
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