Acetylene drying process and equipment thereof

A drying process and drying equipment technology, applied in the direction of hydrocarbons, organic chemistry, adsorption purification/separation, etc., can solve problems such as easy generation of waste residue, waste water, waste acid, shortened catalyst service life, acetylene explosion and combustion accidents, etc., to achieve The effect of less equipment, reduced load, and extended service life

Active Publication Date: 2012-07-18
李通
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

30T of hydrochloric acid per year is extremely harmful to the corrosion of the entire conversion system. At the same time, the chloride produced due to corrosion will seriously shorten the service life of the catalyst. The annual economic loss caused by equipment corrosion and catalyst poisoning is not less than 6 million yuan
[0003] Domestic acetylene drying and dewatering processes mainly include freeze dehydration,

Method used

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  • Acetylene drying process and equipment thereof
  • Acetylene drying process and equipment thereof
  • Acetylene drying process and equipment thereof

Examples

Experimental program
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Example Embodiment

[0051] Example 1

[0052] An acetylene drying process includes the following steps:

[0053] (1) Acetylene comes from the acetylene station. After cleaning, the water content is controlled below 5000ppm, the pressure is 0.1MPa, and the temperature is 5℃. If the moisture is too high, add a 0 degree dehydrator;

[0054] (2) The acetylene gas with a pressure of 0.1MPa and water content of 3000-5000ppm is sent to the acetylene solid alkali drying tower, and the flow rate is controlled below 2m / s. After the acetylene solid alkali drying tower is dried, the acetylene moisture is measured;

[0055] (3) When the moisture content of acetylene at a pressure of 0.1MPa drops to 2000ppm, the acetylene gas enters the primary acetylene drying tower, and when the moisture drops to 700ppm, it enters the secondary acetylene drying tower; the moisture of the acetylene gas coming out of the secondary acetylene drying tower is lower than After 10ppm, it is sent to the subsequent utilization system; the ac...

Example Embodiment

[0066] Example 2

[0067] Such as figure 1 with 2 As shown, a device used in the acetylene drying process of the above embodiment 1 includes an acetylene solid alkali drying tower, a primary acetylene drying tower, and a secondary acetylene drying tower connected in sequence;

[0068] The said acetylene solid alkali drying tower is provided with two: a first acetylene solid alkali drying tower 102 and a second acetylene solid alkali drying tower 103, which are connected in parallel;

[0069] The first-stage acetylene drying tower is provided with two: the first-stage acetylene drying tower 104 and the second-stage acetylene drying tower 105, which are connected in parallel;

[0070] The two-stage acetylene drying tower is provided with two: a first-stage acetylene drying tower 106 and a second-stage acetylene drying tower 107, which are connected in parallel;

[0071] The first-stage acetylene drying tower 104, the second-stage acetylene drying tower 105, the first-stage acetylene dryin...

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Abstract

The invention discloses an acetylene drying process and equipment thereof. The process comprises the following steps of: conveying acetylene into an acetylene solid caustic soda drying tower, controlling the flowing speed at 2m/s, feeding acetylene gas into a first-stage acetylene drying tower when the water content of acetylene of which the pressure is 0.1MPa is lowered to 2,000ppm, and feeding into a second-stage acetylene drying tower when the water content is lowered to 700ppm; conveying acetylene gas which is exhausted out of the second-stage acetylene drying tower and of which the watercontent is lower than 10ppm into a subsequent utilization system; and returning acetylene gas of which the water content is higher than 10ppm into an acetylene gas cabinet for drying once again. The equipment comprises an acetylene solid caustic soda drying tower, a first-stage acetylene drying tower and a second-stage acetylene drying tower which are communicated in sequence. The acetylene drying process has the advantages that good dewatering effect, easiness for equipment operation, running safety, avoidance of pollution, capability of fully drying the acetylene gas, saving in cost, increase in economic efficiency and capability of lowering the water content of acetylene from 3,000-5,000ppm to 10ppm.

Description

technical field [0001] The invention relates to a drying process, in particular to an acetylene drying process and its equipment, belonging to the field of acetylene production. Background technique [0002] Acetylene is lively and widely used. It is the main raw material for the production of vinyl chloride, trichlorethylene, acrylonitrile, acetic acid acetate, chloroprene rubber and other products. At present, the domestic production of acetylene is mostly wet method, and the water content in acetylene High, downstream processes are prone to catalyst poisoning or equipment corrosion. In particular, the water content of acetylene has a great impact on the conversion process of vinyl chloride, because the mixed dehydration effect will affect the production capacity of the conversion and the service life of the mercuric chloride catalyst. Therefore, in order to make it run stably for a long time, the mixed gas must be strictly controlled. moisture. If the water content in a...

Claims

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Application Information

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IPC IPC(8): B01D53/26C07C11/24C07C7/00C07C7/13
Inventor 李通杨秀玲苗乃芬常炳恩
Owner 李通
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