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

A temperature control valve and temperature-sensitive technology, which is applied in the petroleum industry, hydroprocessing process, and hydrocarbon oil treatment, can solve the problems that the performance cannot meet the requirements of use, and achieve stable product performance, low price, and long service life. Effect

Active Publication Date: 2012-05-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • 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. The product composition of the low-temperature F-T synthesis process is dominated by normal hydrocarbons, but the products obtained in the low-temperature F-T synthesis process are directly used as temperature-sensitive media for temperature control valves. The performance cannot meet the requirements of use

Method used

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

Examples

Experimental program
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Effect test

Embodiment 1

[0023] (1) Using the product of the low-temperature F-T synthesis experimental device of China Petroleum & Chemical Corporation as the raw material, the fraction with a boiling point of 240°C to 360°C was prepared by vacuum distillation in a distillation apparatus with 17 theoretical plates. The weight content of normal paraffins in this cut is 95%, and other components account for about 5%.

[0024] (2) the above-mentioned cuts obtained in the FHJ-2 catalyst (a kind of Ni / Al 2 o 3 Commercial catalyst, developed and produced by Fushun Petrochemical Research Institute, the content of active metal nickel in terms of oxides is 40%, and the catalyst is subjected to conventional reduction treatment before use) under the conditions of 5MPa, 200°C, 1.0LHSV and hydrogen-to-liquid ratio of 800 Hydroconversion is used to convert olefins and oxygen-containing compounds therein, and the weight content of normal paraffins in the hydrogenation product is close to 100%.

[0025] (3) the ab...

Embodiment 2

[0028] (1) with embodiment 1;

[0029] (2) Put the above-mentioned cuts on FV-10 catalyst (a kind of W-Mo-Ni / Al 2 o 3 Type commercial catalyst, developed and produced by Fushun Petrochemical Research Institute, the catalyst is subjected to conventional sulfurization treatment before use) under the action of 6MPa, 280°C, 1.0LHSV and hydrogen-to-liquid ratio of 300 for hydrogenation conversion to convert olefins and oxygen-containing compound, and the weight content of n-alkanes in the hydrogenation product is close to 100%.

[0030] (3) the above-mentioned product obtained through hydrogenation conversion is in a distillation unit with 25 theoretical plates, at 1.33 × 10 3 Under Pa pressure, the distillate at 260-340°C is prepared. This fraction is the target product.

[0031] The expansion performance curve of the heating temperature control valve made of this product is as follows: figure 2 shown.

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Abstract

The invention discloses a preparation method for a temperature-sensitive medium used for a wax temperature control valve. The preparation method comprises the following steps: with F-T synthetic product containing C9-C20 components and more than 85 wt% of normal paraffin as a raw material, in the presence of a catalyst, carrying out hydro-conversion so as to convert olefins and oxygen-containing compounds in the synthetic product into proper components for the temperature-sensitive medium used for a wax temperature control valve; distilling a product obtained after hydrogenation and preparing a fraction in a fraction range of 260 to 340 DEG C so as to obtain a target product. Temperature of a wax temperature control valve prepared from the product obtained in the invention is controllable in a range of 5 to 30 DEG C, and stroke values at each DEG C are basically identical. The method provided in the invention is simple in terms of process, produces no three wastes (waste gas, waste water and industrial residue) and is an environment-friendly production method; the product can be used for wax automatic temperature control devices which are in need of uniform lift and is especially applicable as a temperature-sensitive medium for a wax heating temperature control valve.

Description

technical field [0001] The invention belongs to the technical field of special waxes, in particular to a temperature-sensitive medium for a waxy temperature control valve, in particular to a preparation method for a temperature-sensitive medium for a waxy heating temperature control valve. Background technique [0002] The temperature control valve using wax as the temperature-sensitive medium is a self-operated valve, which uses the volume change of the wax temperature-sensitive medium during the phase transition to control the opening of the valve so as to achieve the purpose of controlling the flow of the material flow. It 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 temperature c...

Claims

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Application Information

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IPC IPC(8): C10G67/02
Inventor 孙剑锋张造根王会民高蒿
Owner CHINA PETROLEUM & CHEM CORP
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