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A method for producing microcrystalline wax

A technology of microcrystalline wax and wax layer, which is applied in petroleum wax refining, hydrocarbon oil treatment, petroleum industry, etc., to achieve the effects of energy saving and environmental pollution, low equipment investment, and accelerated separation speed

Active Publication Date: 2019-01-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of the invention has the advantages of low investment in production equipment, simple production process, low operating cost, safety and energy saving, and no solvent pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] This embodiment includes two parts: A: sweating in the first stage, and B: sweating in the second stage.

[0043] A: The first stage of sweating

[0044] This process includes: (A1) preparatory work, (A2) cooling - constant temperature crystallization, (A3) heating - constant temperature sweating, (A4) refining and other processes.

[0045] (A1) Preparations

[0046] Connect the jacket of the sweating dish and the movable coil to the circulation system, and fix the coil on the sweating dish; use water as the medium; start the heating function of the circulation system to raise the temperature of the circulating water to 65°C.

[0047] Put water under the sweating dish plate. Install the sealing system on the upper part of the sweating dish and connect it with the pressurized buffer tank and the compressor; install the decompression buffer tank on the lower part of the sweating dish and connect it to the vacuum pump. Start the compressor and keep the pressure in the p...

Embodiment 2

[0074] This embodiment includes two parts: A: sweating in the first stage, and B: sweating in the second stage.

[0075] A: The first stage of sweating

[0076] This process includes: (A1) preparatory work, (A2) cooling - constant temperature crystallization, (A3) heating - constant temperature sweating, (A4) refining and other processes.

[0077] (A1) Preparations

[0078] Connect the jacket of the sweating dish and the movable coil to the circulation system, and fix the coil on the sweating dish; use water as the medium; start the heating function of the circulation system to raise the temperature of the circulating water to 65°C.

[0079] Put water under the sweating dish plate. Install the sealing system on the upper part of the sweating dish and connect it to the pressurized buffer tank and the compressor; install the decompression buffer tank on the lower part of the sweating dish and connect it to the vacuum pump; connect the pressurized buffer tank emptying system and ...

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Abstract

The invention discloses a method for producing microcrystalline wax. The method is based on common sweating and de-oiling processes, in a sweating process, air-flow passes through a wax layer for carrying liquid state oil in order to compulsively separate wax and oil; at the same time, gas generated by decomposition of inorganic salt forms micro spaces in the wax layer for facilitating rapid discharge of oil, so that the sweating and de-oiling process can be used for producing microcrystalline wax products. The method has the advantages of low production equipment investment, simple production process, low operation cost, safety, energy saving without solvent pollution, and the like.

Description

technical field [0001] The invention belongs to the technical field of petroleum wax production, in particular to a method for producing microcrystalline wax. Background technique [0002] Petroleum wax is a general term for various wax products obtained from waxy distillates after crude oil is refined and processed, including liquid paraffin, soap wax, paraffin wax and microcrystalline wax. Microcrystalline wax is produced by deasphalting the vacuum residue oil with propane and other solvents, and then going through the steps of dewaxing, deoiling, refining and molding. It is generally produced by C 30 ~C 60 It is composed of isoparaffins and a small amount of normal paraffins and naphthenes. Generally, the drop melting point of microcrystalline wax is 65°C-92°C, and it has a finer needle crystal structure than soap wax and paraffin wax in solid state. [0003] Dewaxing is a process in which lubricating oil fractions are used as raw materials to prepare wax paste with an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G73/42
CPCC10G73/42C10G2300/1085
Inventor 陈琳孙剑锋姚春雷郭慧兵张造根张晓晖
Owner CHINA PETROLEUM & CHEM CORP