Continuous production technology of three kettle type sodium hydrosulfide

A technology of sodium hydrosulfide and production technology, which is applied in the direction of sulfur compounds, inorganic chemistry, chemical instruments and methods, etc., can solve the problems of discontinuous production of sodium hydrosulfide in a single kettle, and achieve the effect of continuous production

Inactive Publication Date: 2013-12-25
SHANDONG KENLI PETROCHEM GRP
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Problems solved by technology

[0005] The main problems at present: (1) The preparation of sodium hy

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  • Continuous production technology of three kettle type sodium hydrosulfide

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[0019] Attached figure 1 , To further describe the present invention:

[0020] A three-pot type sodium hydrosulfide continuous production technology, which is characterized in that it includes the following process steps:

[0021] (1) The hydrogen sulfide gas first enters the bottom of the first reactor 1 and reacts with the mixed liquid injected from the second reactor 2. The unreacted gas from the top of the first reactor 1 enters the bottom of the second reactor 2 and reacts with the mixture from the third reactor. The material in the kettle 3 reacts, and the reaction temperature is adjusted by cooling water in the jacket;

[0022] (2) The incomplete reaction gas from the top of the second reactor 2 is cooled by the gas cooler 4 and enters the bottom of the third reactor 3 to fully react with the 48% sodium hydroxide solution from the lye tank 6, and the third The reaction material in the upper part of the reactor 3 enters the second reactor 2 to react by self-flow, and the...

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Abstract

The invention relates to a continuous production technology of three kettle type sodium hydrosulfide. The continuous production technology comprises the following processing steps: (1) firstly, hydrogen sulfide enters into the bottom of a first reaction kettle and is reacted with a mixed liquid pumped by a second reaction kettle, the unreacted gas at the top of the first reaction kettle enters into the bottom of the second reaction kettle and is reacted with a material from a third reaction kettle, and the reaction temperature is adjusted by cooling water in a jacket; (2) gases which are incompletely reacted at the top of the second reaction kettle and cooled through a gas cooler enter into the bottom of the third reaction kettle and are fully reacted with 48% sodium hydroxide liquor from an alkali liquor tank, and the reaction material on the upper part of the third reaction kettle enters into the second reaction kettle to react due to gravitational flow; (3) the material which is fully reacted at the bottom of the first reaction kettle is pumped into a sodium hydrosulfide product tank through a pump to store and sell. The technology provided by the invention has the beneficial effect that sodium hydrosulfide production units are arranged linearly, so that continuous production of NaHS liquor is realized.

Description

technical field [0001] The invention relates to a chemical process, in particular to a three-pot continuous production technology for sodium hydrosulfide. Background technique [0002] Industrial sodium hydrosulfide solution, the color is orange or yellow, solid sodium hydrosulfide is light yellow or orange, flaky crystal, bitter taste, deliquescence, soluble in water and alcohols, only stable in aqueous solution, and strong alkali Sexual, corrosive to skin. The industrial sodium hydrosulfide is mainly used as an intermediate (PPS) for the synthesis of various organic products and as a vulcanization aid for fuels; it is used in the tanning of raw hides in the leather industry; it is used in the chemical fertilizer industry to remove monomers from activated carbon desulfurizers Sulfur is the raw material for the manufacture of ammonium sulfide and pesticide ethanethiol semi-finished products; it is used for sulfurous acid dyeing in man-made fibers; it is also used in copper ...

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Application Information

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IPC IPC(8): C01B17/32
Inventor 王全平姚秀伟魏俊文宋爱民王发明迟建光
Owner SHANDONG KENLI PETROCHEM GRP
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