PTA device oxidation unit air supply system anti-blocking back-blowing system

Abstract

The invention provides a PTA device oxidation unit air supply system anti-blocking back-blowing system. The system comprises a solid-state product discharging pipeline, a material mixer and a material bin which are sequentially connected. A pipeline for connecting the material mixer and the material bin is a main pipeline and is provided with a conveying valve, the end, close to the material bin, of the conveying valve is a tail end, a waste gas recovery device providing gas for sealing for the material mixer, and a branch pipeline is additionally arranged between the tail end of the conveying valve and the waste gas recovery device in a connected mode, and the waste gas recovery device supplies gas through the branch pipeline and used for blowing back the tail end of the conveying valve. The PTA device oxidation unit air supply system anti-blocking back-blowing system has the advantages that the anti-blocking back-blowing device provides the product conveying system applicable to the whole PTA industry, device operation stability is improved, the cost is low, comprehensive benefits are remarkable, the pipeline arrangement space is effectively utilized, the anti-blocking efficiency is high, the structure is simple, the investment cost is low, manufacturing and installation are convenient, the precious space on the occupied area is effectively saved, management and maintenance are facilitated, the waste gas can be recycled to the maximum extent, and the economical efficiency is good.

Description

technical field [0001] The invention relates to the technical field of PTA production equipment, in particular to an anti-blocking and back-blowing system of an air supply system of an oxidation unit of a PTA device. Background technique [0002] The production cost of PTA includes two parts, the first part is the raw material PX cost, and the second part is the device processing cost. The upstream raw material of PTA is PX. In the petrochemical industry with oil as the source, the upstream cost transfer effect is significant. The price of PTA is largely controlled by the price of raw materials PX and petroleum, especially when the price of PTA is quite close to the cost or even inverted, the force of the price change of raw materials is very obvious. PTA internal disk production cost = 0.655PX price * 1.02 * 1.17 * exchange rate + processing fee, it can be seen that the PX price directly determines the PTA cost. In fact, profitability depends largely on the cost control c...

AI Technical Summary

Problems solved by technology

[0004] In the process of conveying the products produced by oxidation, a large number of products are exposed and blocked every time during the process operation, which leads to the increase of the production cost of the enterprise and the dust pollution to the surrounding environment. However, the existing feeding system does not consider all the materials of the oxidation products. The composition and practical problems encountered in the process of transportation limit the bottleneck of the continuous production of the entire device and compress the company's profit margins

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