A calcium carbide slag slurry treating device and method and calcium carbide slag slurry

A treatment equipment and treatment method technology, applied in dehydration/drying/thickened sludge treatment, petroleum industry, acetylene generator, etc., can solve the problem of poor quality of clear liquid, uncontrollable slurry titer, and scaling of related equipment and pipelines Problems such as blockage

Inactive Publication Date: 2018-12-14
TANGSHAN SANYOU CHLOR ALKALI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The invention aims to solve the problems of uncontrollable slurry titer, poor clear liquid quality and frequent fouling and clogging of relevant equipment pipelines in the existing calcium carbide method polyvinyl chloride resin production process

Method used

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Embodiment Construction

[0018] Below technical scheme of the present invention is described in detail,

[0019] The traditional slurry treatment equipment includes a slurry delivery pipeline, a stripper and a thickening tank. The slurry delivery pipeline is connected to the source of the slurry and the stripper. The slurry solution generated in the process enters from the top of the stripper. The acetylene gas dissolved in the slurry is recovered to the maximum extent, the slurry discharged from the bottom of the tower is transported to the concentration tank, and the natural sedimentation process is completed in the concentration tank, and the supernatant is returned to the generation process through the settling tank through the overflow, and is produced as acetylene The production water of the device is recycled, and the thick slurry at the bottom of the thickening tank is output by the discharge pump and can be used for other production purposes.

[0020] The present invention uses polyacrylamide...

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Abstract

The invention provides a calcium carbide slag slurry treating device. The device includes a slag slurry conveying pipeline, a stripping column, a concentration tank, and a preparation tank including apreparation zone in the upper layer and a liquid storage zone in the lower layer. The preparation zone and the liquid storage zone are connected through a transition pipe provided with a valve. The liquid storage zone is connected to the stripping column through an agent pipeline provided with an adjusting valve connected to a DCS control system. The invention also provides a calcium carbide slagslurry treating method. The method includes mixing polyacrylamide with water in the preparation zone to prepare an agent having a concentration of 0.05-0.15% with a stirring speed being 100 rpm; andproviding the agent to the stripping column with the volume ratio of the agent to slag slurry being 1:800. The invention further provides calcium carbide slag slurry the titer of which is 60 ti to 80ti, with sedimentation of each 100 mL of the slag slurry being completed in 40-50 seconds, and with the turbidity of a liquid supernatant obtained by sedimentation being 5 NTU. The method and the device save water, reduce the production cost and obviously improve liquid supernatant quality.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of chemical product resources, and in particular relates to a slurry treatment method in a calcium carbide polyvinyl chloride resin production process and a calcium carbide slurry product obtained by the method. Background technique [0002] There are two main production processes of polyvinyl chloride, one is the calcium carbide method, the production raw materials are calcium carbide and crude salt; the other is the ethylene method, the main raw material is petroleum. The production of PVC in the international market is mainly based on the ethylene method, while in China, due to the resource endowment constraints of rich coal and limestone resources but poor oil and gas, the main method is the calcium carbide method. Our company now adopts calcium carbide PVC production process, the reaction of calcium carbide and water will produce a large amount of by-product calcium hydroxid...

Claims

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Application Information

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IPC IPC(8): C02F11/14C10H21/00
CPCC02F11/14C10H21/00
Inventor 陈福新桑兆虎张国林杨善厚刘彩红马志超李友光代春春李建奎田野乔梁胡冰陈志威郑荣华杨小军刘川云亮吕彦玲孙金良徐建玲白丽洁杨玉军刘铁生王玉波肖洪明赵晨寰苏晓凤李伟张朋飞马志强周智川张宗芝
Owner TANGSHAN SANYOU CHLOR ALKALI
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