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Preparation method for wax temperature-sensitive medium for temperature control valve

A technology of temperature control valve and wax, which is applied in the field of preparation of temperature-sensing medium for wax-based heating temperature control valve, can solve the problems of unsuitable preparation of waxy temperature-sensing medium for temperature control valve, and achieve long service life and good use Effect, the effect of stable product performance

Active Publication Date: 2013-05-15
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The F-T synthesis technology mainly includes high-temperature synthesis technology and low-temperature synthesis technology. Among them, the product composition of the low-temperature F-T synthesis process is mainly normal hydrocarbons, but the product is directly used as a raw material, or after simple treatment, the obtained material is not suitable. Preparation of waxy temperature medium for temperature control valve

Method used

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  • Preparation method for wax temperature-sensitive medium for temperature control valve
  • Preparation method for wax temperature-sensitive medium for temperature control valve
  • Preparation method for wax temperature-sensitive medium for temperature control valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Hydrogenation of low-temperature F-T synthesis products:

[0026] The cold trap material in the F-T synthesis product (the F-T synthesis product is based on the catalyst in Example 1 of CN200910011993.1 and the cold trap material of the F-T synthesis product under corresponding conditions (that is, the fraction below 320 ° C) is the raw material of this example), in FHJ-2 Catalyst loaded with 0.8% K (FHJ-2 catalyst a Ni / Al2 o 3 Commercial catalyst, developed and produced by Fushun Petrochemical Research Institute, the content of active metal nickel is 40% in terms of oxides, impregnated with potassium nitrate and then dried and roasted) for hydrogenation under the conditions of 5MPa, 200°C, 2.0 LHSV and hydrogen-to-oil ratio 800 Conversion to convert olefins and oxygenates therein.

[0027] (2) Sweat the hydrogenation product obtained above:

[0028] Add the above-mentioned hydrogenation product (at a temperature of 35°C) into a traditional tank-type sweater, cool...

Embodiment 2

[0035] (1) Hydrogenation of low-temperature F-T synthesis products:

[0036] F-T synthesis product (F-T synthesis product is according to CN200910011987.6 Example 1 catalyst and synthetic light oil (that is, fraction below 350°C) in the F-T synthesis process under corresponding conditions is the raw material of this example), loaded on FV-10 catalyst with 1% K (FV-10 catalyst a W-Mo-Ni / Al 2 o 3 Type commercial catalyst, developed and produced by Fushun Petrochemical Research Institute, impregnated with potassium nitrate and then dried and roasted) under the action of 6MPa, 280°C, 2.0 LHSV and hydrogen-to-oil ratio of 300 for hydrogenation conversion to convert olefins and oxygenates therein.

[0037] (2) Sweat the hydrogenation product obtained above:

[0038] Add the above-mentioned hydrogenated product (at a temperature of 35°C) into a traditional tank-type sweater, cool down to 4°C at a rate of 1°C / h, then raise the temperature to 6°C at a rate of 1°C / h, and keep the temp...

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Abstract

The invention relates to a preparation method for a wax temperature-sensitive medium for a temperature control valve. According to the invention, an F-T synthetic product containing a component selected from C9 to C20 and having more than 80 wt% of n-alkane is used as a raw material, the raw material is subjected to hydro-conversion in the presence of a catalyst, and alkene and an oxygen-containing compound therein are converted into proper components for the temperature-sensitive medium used for the temperature control valve; a product of hydrogenation undergoes sweating and refining so as to prepare a target product. The wax temperature control valve prepared from the target product is capable of temperature control in a range of 5 to 30 DEG C, and travel range values of all degrees are basically consistent. The preparation method provided by the invention is simple and needs low operation cost. The product can be used for automatic wax temperature control devices needing uniform rise, especially for the temperature-sensitive medium for a wax heating temperature control valve.

Description

technical field [0001] The invention belongs to the technical field of special waxes, and in particular relates to a waxy temperature-sensing medium for a temperature control valve, in particular to a preparation method of a waxy temperature-sensing medium for a heating temperature control valve. Background technique [0002] The temperature control valve using wax as the temperature sensing medium is a self-operated valve, which uses the volume change of the wax temperature sensing medium during the phase change process to control the opening of the valve so as to achieve the purpose of controlling the flow of the material flow. It also has the functions of induction, Execution, feedback, fixed value and other functions. This kind of temperature control valve has the advantages of no significant change in temperature characteristics with system pressure, high mechanical strength, good chemical stability, easy mass production and installation, low cost, stable and reliable t...

Claims

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Application Information

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IPC IPC(8): C10G67/14
Inventor 孙剑锋张造根王立言袁平飞王会民高蒿
Owner CHINA PETROLEUM & CHEM CORP
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