Vacuum assembly for decompression device

A technology of vacuum unit and decompression device, applied in the field of separation, can solve the problems of large equipment area, large maintenance workload, low energy utilization rate of steam jet pump, etc. The effect of low operation and maintenance costs

Inactive Publication Date: 2005-06-01
淄博华中真空设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are problems such as large equipment footprint, heavy maintenance workload, low energy utilization rate of steam jet pumps and the need for a special steam source.

Method used

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  • Vacuum assembly for decompression device
  • Vacuum assembly for decompression device
  • Vacuum assembly for decompression device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The Roots-water ring vacuum unit is used as the vacuum device for the vacuum distillation tower:

[0034] figure 2 Among them, the Roots vacuum unit includes two Roots vacuum pumps, a water ring vacuum pump and its corresponding control device (not shown in the figure), wherein, the Roots vacuum pumps 5-1, 5-2 and the water ring vacuum pump 5-3 are sequentially connected in series to form a Roots-Roots-water ring vacuum unit.

[0035] The above-mentioned control device is the operation control circuit of each vacuum pump motor and the open / close control circuit of the pipeline of the vacuum unit and the valve of the oil circuit.

[0036] Since the start / stop operation control circuit of the motor and the open / close control circuit of the valve are all existing technologies, they will not be described in detail here.

[0037] The function of setting the water ring vacuum pump is to cause the preliminary vacuum required by the Roots pump and act as its backing pump.

...

Embodiment 2

[0041] The Roots-reciprocating vacuum unit is used as the vacuuming device for the vacuum distillation tower:

[0042] image 3 Among them, the Roots vacuum unit includes two Roots vacuum pumps, a reciprocating vacuum pump and its corresponding control device (not shown in the figure), wherein the Roots vacuum pumps 5-1, 5-2 and the reciprocating vacuum pump 5-4 Connected in series to form a Roots-Roots-reciprocating vacuum unit.

[0043] The effect of setting the reciprocating vacuum pump is the same as Example 1.

[0044] All the other are with embodiment 1.

[0045] Since the present invention uses a vacuum unit to provide a negative pressure source for the decompression device, it has high pumping rate, quick start-up of the device, and strong adaptability, which is beneficial to shortening the start-up time of the entire vacuum distillation system and stabilizing the operating conditions of the vacuum distillation tower. It has the advantages of compact structure, smal...

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PUM

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Abstract

The present invention belongs to the field of separation technology, and is especially vacuum pumping unit for decompression distilling apparatus. The vacuum pumping unit includes condenser with hot medium inlet connected to the outlet pipe of the decompression distilling tower and Roots-water ring vacuum set or Roots-reciprocating vacuum set in the outlet pipeline of hot medium outlet of the condenser. Adopting vacuum set to provide negative pressure source for the decompression apparatus makes the present invention has high pumping rate, fast starting, powerful adaptability, shortened operation time, stable operation state and other advantages. The present invention may be used widely in atmospherical and vacuum unit of petrochemical industry.

Description

technical field [0001] The invention belongs to the field of separation, and in particular relates to a vacuum device used for a vacuum distillation device. Background technique [0002] In refineries for the purpose of producing fuel oil and lubricating oil, crude oil is usually first subjected to atmospheric pressure and vacuum distillation, and then sequentially separated into gasoline, kerosene, diesel, heavy diesel oil, and light, medium, and heavy lubricating oils, etc. Various fractions with different boiling points. The above process is a physical process, and the structure of hydrocarbons in crude oil does not change, which is called primary processing. [0003] Atmospheric distillation is based on the different boiling points of various hydrocarbon molecules that make up crude oil, using heating furnaces, fractionation towers and other equipment to partially vaporize and partially condense crude oil multiple times, so that the two phases of vapor and liquid can fu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D3/10C10G7/06
Inventor 张长远张汝华韩强
Owner 淄博华中真空设备有限公司
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