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Method for preparing potassium formate and sodium formate from carbide furnace tail gas as raw material

A technology of calcium carbide furnace tail gas and potassium formate, applied in carboxylate preparation, organic chemistry, etc., can solve the problems of emission pollution, inability to directly recycle, complex carbon monoxide process, etc., and achieve the effect of solving pollution problems

Inactive Publication Date: 2003-11-19
ALLY HI TECH
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  • Summary
  • Abstract
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Problems solved by technology

Because this method has high requirements on the purity of carbon monoxide, the process for preparing high-purity carbon monoxide is also relatively complicated.
[0004] A large amount of carbon monoxide will be produced when the calcium carbide factory produces calcium carbide, but the concentration of this carbon monoxide is not high, generally it cannot be directly recycled, but the discharge will cause serious pollution

Method used

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  • Method for preparing potassium formate and sodium formate from carbide furnace tail gas as raw material
  • Method for preparing potassium formate and sodium formate from carbide furnace tail gas as raw material

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Embodiment Construction

[0018] Such as figure 1 As shown, the tail gas of the calcium carbide furnace enters the scrubbing tower 1 from the bottom under the action of a fan, and at the same time, washing water is introduced to the top of the scrubbing tower 1, and the scrubbing water and the tail gas of the calcium carbide furnace flow in the scrubbing tower 1 to make the dust in the tail gas of the calcium carbide furnace flow. It settles to the bottom of the tower to be removed, and at the same time it can absorb part of the soluble gas.

[0019] Then the dust-removed tail gas from the top of the tower is introduced into the bottom of the purification tower 3 through the fan 2 into the purification tower. The purification tower 3 is equipped with ALGA-B01 type adsorbent, which can absorb and remove acid gases such as hydrogen sulfide and carbon dioxide. And a small amount of dust to further purify the tail gas of the calcium carbide furnace, reduce the generation of by-products, and improve the purity ...

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Abstract

A process for preparing potassium (or sodium) formate from the tail gas of calcium carbide furnace includes such steps as cooling, removing dust, purifying, compressing, alkali absorbing and drying.

Description

Technical field [0001] The invention relates to a production process of formate, in particular to a method for preparing potassium formate and sodium by using the tail gas of a calcium carbide furnace. Background technique [0002] As an important compound, potassium formate is widely used in the petroleum extraction industry. When used as a drilling fluid for petroleum extraction, it can achieve high density, maintain low viscosity, increase drilling speed, and extend the service life of drill bits. It is the field of petroleum extraction technology. Of a new type of material. Potassium formate can also be used as a raw material for the preparation of important chemical products such as oxalic acid, formic acid and formamide, and it can also be used as a feed additive. The market prospect is very broad. As a basic chemical raw material, sodium formate is mainly used as basic chemical raw materials such as sulphur powder, formic acid and well killing fluid in the petroleum indust...

Claims

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Application Information

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IPC IPC(8): C07C51/41C07C53/06
Inventor 李均伦
Owner ALLY HI TECH
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