Calcium carbide method pvc process activation absorption device

Abstract

The invention relates to the technical field of an activation absorption apparatus of a calcium-carbide-process PVC (polyvinyl chloride) technique, particularly an activation absorption apparatus of a calcium-carbide-process PVC technique, which comprises a converter, a first cooler, an absorption tower, a second cooler, a circulating tank, a circulating pump and a fan, wherein an upper end feed port of the converter is fixedly provided with a raw gas inlet pipeline; the raw gas inlet pipeline is fixedly provided with a nitrogen charging pipeline; a lower end discharge port of the converter is fixedly provided with a converted raw gas discharge pipeline; and a replacement and activation gas discharge pipeline is fixed installed between the converted raw gas discharge pipeline and a heat medium feed port of the first cooler. The absorption apparatus has reasonable and compact structure, is convenient to use, and can ensure acceptable overhaul replacement and prevent hydrogen chloride from polluting the environment when the converter is performing overhaul replacement catalyst overturning and activation in the calcium-carbide-process PVC technique, thereby avoiding equipment corrosion and implementing clean operation in the converter overhaul process.

Description

technical field [0001] The invention relates to the technical field of calcium carbide process PVC process activation and absorption devices, and relates to a calcium carbide process PVC process activation and absorption device. Background technique [0002] In the production process of polyvinyl chloride (PVC) by calcium carbide method, during the process of inactive replacement, catalyst pumping, and hot blowing of the converter in the vinyl chloride synthesis section, the exhaust gas during nitrogen replacement is directly discharged into the atmosphere; catalyst pumping When the converter head is opened, the mercury-containing waste gas is directly discharged to the atmosphere; when the converter is activated, the traditional process is to directly discharge hydrogen chloride into the atmosphere after being roughly absorbed by water. There are the following problems in such an operation process: 1. Because there is activated carbon with strong adsorption capacity in the ...

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Problems solved by technology

[0003] The present invention provides a calcium carbide process PVC process activation absorption device, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem of the converter in the current vinyl chloride synthesis section. In the process of out-of-use replacement and activation, there are problems that the conventional replacement cannot be replaced qualified, it is easy to cause environmental mercury pollution, and hydrogen chloride that has not been fully absorbed is directly discharged into the atmosphere, which not only pollutes the environment but also corrodes surrounding pipeline equipment.

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