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Method for producing wax temperature-sensitive medium for thermostat

A production method and technology of thermostat, applied in petroleum wax refining, etc., can solve problems such as wide temperature control range and environmental pollution, and achieve the effect of increasing crystal size and facilitating rapid discharge

Active Publication Date: 2016-07-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production methods introduced by these patents are polluting to the environment
[0020] The production methods of waxy temperature-sensitive medium in the prior art also use (multi-stage) sweating or (with distillation method) combined sweating, such as: CN02109670.8 (waxy temperature-sensitive medium for shower automatic thermostat valve), CN02109668.6 (wax medium for heating temperature control valve and its preparation method), CN200310104909.3 (a waxy temperature-sensitive medium for temperature control valve and its preparation method), etc., the melting points of the target products of these patents are all below 50°C; CN201110353409 .8 (preparation method of waxy temperature medium for temperature control valve), CN201110353410.0 (preparation method of thermal induction wax medium for automatic thickening valve of motorcycle), CN02109670.8 (for shower automatic temperature control valve Wax temperature-sensitive medium), etc., the target product of these patents has a melting point below 50°C, and has a wide temperature control range, so it is not suitable for use as a waxy temperature-sensitive medium for thermostats

Method used

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  • Method for producing wax temperature-sensitive medium for thermostat
  • Method for producing wax temperature-sensitive medium for thermostat

Examples

Experimental program
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Effect test

Embodiment 1

[0057] This embodiment includes: (1) preparation work, (2) charging, (3) cooling - high temperature constant temperature - cooling - low temperature constant temperature crystallization, (4) heating - constant temperature sweating, (5) crude product collection, (6) product Refining and other processes.

[0058] (1) Preparation

[0059] Connect the jacket of the sweating dish and the movable coil to the circulation system, 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 medium to 75°C.

[0060] The lower part of the sweating dish plate is filled with water; the lower part of the sweating dish is connected with a decompression buffer tank and a vacuum pump.

[0061] (2) Loading

[0062] Use No. 70 semi-refined wax (produced by Dalian Petrochemical Company, its properties are: melting point 70.35°C; oil content 0.81%; n-paraffin content 70.37%) as raw material, hea...

Embodiment 2

[0081] This embodiment includes: (1) preparation work, (2) charging, (3) cooling - high temperature constant temperature - cooling - low temperature constant temperature crystallization, (4) heating - constant temperature sweating, (5) crude product collection, (6) product Refining and other processes.

[0082] (1) Preparation

[0083] Connect the jacket of the sweating dish and the movable coil to the circulation system, 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 medium to 75°C.

[0084] The lower part of the sweating dish plate is cushioned with water.

[0085] Install the sealing system on the upper part of the sweating dish and connect it with the pressurized buffer tank and the compressor. Connect the emptying system of the pressurized buffer tank and the exhaust port at the lower part of the sweating dish to the recovery system respectively, using liqu...

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Abstract

The present invention discloses a method for producing a wax temperature-sensitive medium for a thermostat. The method is as below: adding a low boiling point liquid in feedstock paraffin; properly adding a high temperature thermostat phase at a suitable temperature during a cooling phase; and using airflow to pass through a wax layer to carry out a liquid component in a heating sweating process, so as to enhance separation effect and accelerate separation speed. The method has the advantages of low plant investment, simple production process low operating costs, and no solvent pollution; the obtained product has narrow temperature range, can be used for wax thermostat valve, especially wax temperature-sensitive medium for thermostat.

Description

technical field [0001] The invention belongs to the technical field of special wax production, and in particular relates to a production method of a wax temperature-sensitive medium for a thermostat. Background technique [0002] The wax temperature control valve uses wax as the medium for sensing temperature changes. When the ambient temperature changes, the volume of the wax will change, and then control the valve opening, thereby adjusting the flow rate and achieving the purpose of adjusting and controlling the temperature. The waxy substances used in waxy temperature control valves are called temperature-sensitive media. [0003] The development of wax temperature control valves began in the early twentieth century, and its purpose was to replace the bellows components used in the cooling system of internal combustion engines for temperature control. Wax temperature control valve is a self-operated temperature and flow automatic control device integrating sensing, ampli...

Claims

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Application Information

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IPC IPC(8): C10G73/42
Inventor 孙剑锋张造根孙鹏陈明王鑫
Owner CHINA PETROLEUM & CHEM CORP
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