Hydrocracking heat high separation high pressure regulating angle valve

Abstract

The invention relates to a regulating angle valve, provides a hydrocracking heat highly-distributing high-pressure regulating angle valve, and belongs to the field of fluid control valves. The hydrocracking heat highly-distributing high-pressure regulating angle valve comprises a valve body and an upper cover. The upper portion of the valve body is connected with the upper cover. A valve element and a valve seat are arranged in the valve body. The valve element is of a stepped structure. The lower end of the valve element is connected with the valve seat. A first throttling sleeve and a second throttling sleeve are arranged on the valve element. The first throttling sleeve is located on the inner ring of the second throttling sleeve. A plurality of evenly-distributed first kidney-shaped channel holes are formed in the first throttling sleeve in the circumferential direction. A plurality of evenly-distributed second kidney-shaped channel holes are formed in the second throttling sleeve in the circumferential direction. The first kidney-shaped channel holes correspond to the second kidney-shaped channel holes one to one so that channel passageways can be formed. A plurality of rectangular flow regulation windows are formed in the first throttling sleeve in the circumferential direction. Multistage pressure reduction anti-cavitation structural valve trims are adopted for the valve, the anti-erosion performance is good, the sealing level reaches the VI level, noise is low, and the service life is three times or more of the service life of a traditional valve.

Description

technical field [0001] The invention relates to a regulating angle valve, which belongs to the field of fluid control valves. Background technique [0002] Paraxylene (abbreviated as PX in English) is one of the very important raw materials in chemical production. It can be used to produce purified terephthalic acid (PTA in English) or dimethyl terephthalate (DMT in English). Purified terephthalic acid or dimethyl terephthalate reacts with ethylene glycol to produce polyethylene terephthalate (PET for short), namely polyester, which is widely used in industrial production. The hydrocracking thermal high fractionation process is one of the key process steps in the production of PX. The process method is that under the relatively high working pressure and temperature, the hydrogen gas and the catalyst work together to cause the heavy crude oil to undergo hydrocracking and isomerization reactions. Converted to light oil, the light oil is flow-controlled through valves and sent...

AI Technical Summary

Problems solved by technology

When traditional valves face the working conditions of high temperature, high pressure, and the medium is mixed with some solid particles, there are usually situations such as easy erosion, easy wear, easy blockage, and poor sealing. The noise level is large, and the service life of the valve is very short. Meet the needs of process production

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