Raw material collecting device

Abstract

The invention discloses a raw material collecting device, and relates to the technical field of chemical equipment, the raw material collecting device comprises a cylinder and a condenser, the condenser is communicated with the cylinder, the condenser is provided with a raw material inlet, an exhaust port, a first refrigerant inlet and a first refrigerant outlet, the raw material inlet is used for introducing a gas-phase raw material, the exhaust port is used for discharging impurity gas. a gas-phase raw material is changed into a liquid-phase raw material under the action of the condenser and enters the cylinder body, the cylinder body is provided with a liquid-phase outlet which is communicated with a rectifying tower, the cylinder body is provided with a pressure sensor which is used for detecting the pressure in the cylinder body, a jacket is arranged on the outer side of the cylinder body, and the jacket and a first refrigerant outlet are both communicated with a refrigeration structure; a first throttle valve is arranged on the pipeline between the jacket and the refrigeration structure; and the first throttle valve and the pressure sensor are in interlocking control. High-pressure boron trifluoride gas is liquefied in the raw material collecting device. Meanwhile, boron trifluoride liquid is stably stored in the raw material collecting device to provide raw materials for the rectifying tower.

Description

Technical field [0001] The present invention relates to the technical field of chemical equipment, and more particularly to a raw material collection device. Background technique [0002] The impurities in the boronized boron gas have a main there in n 2 O 2 , Ar, CO 2 , CO, CH 4 SIF 4 SO 2 , HF, etc., based on 99.5% (mass fraction) BF 3 The gas is an example, where impurities are air (N 2 O 2 , Ar, CO 2 , CO, CH 4 ) Components and other impurities, including SO 2 SO 3 SIF 4 , HF, etc., for the pretreatment of air components, the purification load of subsequent distillation can be reduced, reducing capital investment, and reduces purification cost. Distillation of the boron trifluoride, in order to improve the efficiency of the distillation column, the liquid feed is generally liquid feed, before the rectification, the boron trifluoride feedstock first enters the raw material collecting device, and is stabilized by the chain of temperature pressure. Fluorinated boron, control the...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a raw material collection device to solve the problems of the above-mentioned prior art, to solve the problems of liquid phase feeding and pressure instability in the boron trifluoride rectification process, so that the high-pressure gas phase raw material is in the raw material collection device Internal liquefaction, while the liquid phase is stably stored in the raw material collection device to provide raw materials for the rectification tower

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