PTA futures, that is, the dominant trading variety with phthalic acid as the subject matter, is a futures variety listed on Zhengzhou Commodity Futures Exchange.
Function: The application of PTA is concentrated. More than 90% of PTA in the world is used to produce polyethylene terephthalate (PET), and the rest is used as raw materials for polypropylene terephthalate (PTT), polybutylene terephthalate (PBT) and other products.
PTA production process can be divided into two parts: oxidation unit and hydrofining unit. The raw material PX is oxidized into crude terephthalic acid by air with acetic acid as solvent under the action of catalyst, and then the crude product is obtained by crystallization, filtration and drying in turn. Crude terephthalic acid is hydrogenated to remove impurities, then crystallized, centrifugally separated and dried to obtain PTA finished products.
Extended data:
Safety requirements
1, PTA is a flammable substance, which is in danger of burning in case of high heat, open flame or contact with oxidant. PTA dust is explosive. Therefore, the production and loading and unloading process of products should pay attention to closed operation and labor.
2. The workplace should take necessary ventilation and protective measures to prevent product leakage and dust accumulation.
3.PTA is a low toxic substance, which has a certain stimulating effect on skin and mucosa. For allergic people, contact with this product may lead to rash and bronchitis. The maximum allowable concentration in the air is 0. 1mg/m3.
Its main use is to produce polyester fiber (polyester), polyester bottle chips and polyester films, which are widely used in chemical fiber, light industry, electronics, construction and other aspects of the national economy and are closely related to people's living standards. PTA futures, that is, the dominant trading variety with phthalic acid as the subject matter, is a futures variety listed on Zhengzhou Commodity Futures Exchange.
References:
Baidu encyclopedia -pta futures