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Process and device for producing ammonium sulfite and byproduct ammonium thiosulfate liquid fertilizer

A technology for by-producing ammonium thiosulfate and liquid fertilizers is applied in the preparation of alkali metal sulfites, ammonium salt fertilizers, fertilization devices, etc., and can solve the problems of large pollution, high cost of thiosulfate fertilizers, and complicated processes.

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 ammonium thiosulfate liquid fertilizer to solve the problem of high cost of thiosulfate fertilizer
[0016] Another object of the present invention is to solve the problems of large pollution and complicated process in the production of ammonium thiosulfate liquid fertilizer 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 ammonium thiosulfate liquid fertilizer
  • Process and device for producing ammonium sulfite and byproduct ammonium thiosulfate liquid fertilizer
  • Process and device for producing ammonium sulfite and byproduct ammonium thiosulfate liquid fertilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Example 1. Such as Figure 1-3 Shown, the technique of producing ammonium sulfite and byproduct ammonium thiosulfate liquid fertilizer is characterized in that, comprises the steps:

[0067] Put the waste sulfur 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°C; the heat exchanger 3 uses water to cool down. Cyclone separation tower, also called cyclone separator, is a kind of equipment used for the separation of gas-solid system or liquid-solid system. The working principle is to rely on the rotational motion caused by the tangential introduction of the airflow, so that the solid particles or liquid droplets with large inertial centrifugal force are separated from the outer wall. The main features of the cyclone separator are simple struc...

Embodiment 2

[0115] Example 2. Such as Figure 4-5 As shown, the difference between this embodiment and Embodiment 1 is that the steam generator 20 is used to cool down the sulfur incinerator 1, and when the sulfur incinerator 1 is burned, the temperature of the body of furnace remains at 800 degrees Celsius, and the water produced by the steam generator 20 is The steam is passed into the liquid fertilizer generating kettle 24 so that the temperature of the liquid in the liquid fertilizer generating kettle 24 slowly rises to 65 degrees Celsius within 60 minutes, and the gas generated by the liquid fertilizer generating kettle 24 is passed into the primary absorption tower 5 or the secondary absorption tower 6 Or a three-stage absorption tower 7 . Continue to pass water vapor into the liquid fertilizer generating kettle 24 to make the liquid temperature in the liquid fertilizer generating kettle 24 to 105 degrees Celsius, keep the pressure of the liquid fertilizer generating kettle 24 at 0...

Embodiment 3

[0116] Example 3. Such as Figure 6-10 As shown, the difference between this embodiment and Embodiment 1 is that the steam generator 20 is used to cool down the sulfur incinerator 1, and when the sulfur incinerator 1 is burned, the temperature of the body of furnace remains at 780 degrees Celsius, and the water produced by the steam generator 20 is kept at 780 degrees Celsius. The steam is passed into the liquid fertilizer generating kettle 24 so that the temperature of the liquid in the liquid fertilizer generating kettle 24 slowly rises to 65 degrees Celsius within 60 minutes, and the gas generated by the liquid fertilizer generating kettle 24 is passed into the primary absorption tower 5 or the secondary absorption tower 6 Or a three-stage absorption tower 7 . Continue to pass water vapor into the liquid fertilizer generating still 24 to make the liquid temperature in the liquid fertilizer generating still 24 to 105 degrees Celsius, keep the pressure of the liquid fertiliz...

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Abstract

The invention discloses a process and device for producing ammonium sulfite and byproduct ammonium thiosulfate liquid fertilizer. The process comprises the following steps: waste sulfur is added into a sulfur burning furnace for burning to generate flue gas rich in high-concentration sulfur dioxide gas; the flue gas enters a cyclone separation tower to be dedusted, the dedusted flue gas enters a heat exchanger and a washing purification tower to be treated and then enters a first-stage absorption tower, a second-stage absorption tower and a third-stage absorption tower to be absorbed, and then the flue gas is discharged through a sulfur dioxide removal tower and an ammonia removal tower. Solid ammonium sulfite is separated from liquid of the first-stage absorption tower, the second-stage absorption tower and the third-stage absorption tower in a neutralization tank; the residual liquid and circulating liquid of the washing purification tower, the sulfur dioxide removal tower and the ammonia removal tower are subjected to a thionation reaction in a liquid fertilizer generation kettle, and finally the pH value of the liquid in the liquid fertilizer generation kettle is adjusted with alkali to obtain the liquid fertilizer. According to the process and the device, the high-purity solid ammonium sulfite can be obtained, an ammonium thiosulfate fertilizer can be produced as a byproduct, and the process and the device have good special industrial application and prospects.

Description

technical field [0001] The invention relates to a liquid fertilizer production process and device, in particular to a process and device for producing ammonium sulfite and ammonium thiosulfate liquid fertilizer. 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 It is used as chr...

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
CPCB01D53/79B01D53/96B01D53/501B01D53/75B01D53/50B01D53/58B01D53/73F23G7/00C01D5/14C01B17/64C05C3/00B01D2251/2062B01D2251/608B01D2251/206B01D2258/0283B01D2251/604B01D2251/512B01D50/40Y02A50/20
Inventor 刘庆成王华廷魏庆魁陈美秀
Owner SHANDONG TIANTAI STEEL PLASTIC
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