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Process for synthesizing hydrogenated terphenyl heat-conducting oil

A hydrogenated terphenyl and synthesis process technology, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of large hydrogen consumption, complicated distillation and separation process, etc., and achieve the effect of improving purity and improving selectivity

Pending Publication Date: 2022-02-11
SHE COUNTY JINDONG ECONOMIC & TRADE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invent describes an improved method for producing high quality hydrocracked triarylene (TPI) from crude oils containing impurities like phthalimides or other compounds called pigments during production processes that use acidic conditions at elevated temperatures. This process uses specialized catalytic materials made up mostly of mixed metals together. By doing this, it can increase the yield of TIP compared to previous methods without adding any new chemical substances. Additionally, there are fewer side products produced when making certain types of fuel due to less reactive components being used instead of pure ones. Overall, these technical improvements make better ways to produce clean fuels while reducing environmental concerns associated with traditional manufacturing techniques.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the efficiency at producing high quality hydrogenized terephthalene (HT) while reducing unwanted side reactions or impurities from other components present within crude HT product mixtures produced through chemical reaction steps like polymerization.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The preparation of CuMgAl composite oxide supported catalyst is specifically:

[0022] (1) According to the molar ratio of Cu, Mg and Al in the composite metal oxide is 1:1:2, weigh the corresponding nitrate solution, and prepare a metal salt solution with a mixed solution concentration of 0.10 mol / L;

[0023] (2) Weigh sodium hydroxide or potassium hydroxide to prepare an alkaline solution with a concentration of 0.80mol / L;

[0024] (3) The active component is 28% of the mass of the carrier. Weigh the carrier molecular sieve ZSM-11, place it in deionized water, control the temperature at 85°C, and use the co-precipitation method to drop the above steps (1) and (2) at the same time ) solution, add a phosphoric acid solution with a mass fraction of 10% to control the pH of the system at 9; after the precipitation is complete, age the reaction solution at 70°C for 48 hours;

[0025] (4) The reaction solution in step (3) was filtered, the precipitate was washed with deion...

Embodiment 2

[0029] The preparation of CuFeAl composite oxide supported catalyst is specifically:

[0030] (1) According to the molar ratio of Cu, Fe and Al in the composite metal oxide is 1:0.6:1.8, weigh the corresponding nitrate solution, and prepare a metal salt solution with a mixed solution concentration of 0.10 mol / L;

[0031] (2) Weigh sodium hydroxide or potassium hydroxide to prepare an alkaline solution with a concentration of 0.80mol / L;

[0032] (3) The active component is 20% of the mass of the carrier. Weigh the carrier molecular sieve ZSM-5, place it in deionized water, control the temperature at 85°C, and use the co-precipitation method to drop the above steps (1) and (2) at the same time ) solution, add a phosphoric acid solution with a mass fraction of 10% to control the pH of the system at 9; after the precipitation is complete, age the reaction solution at 70°C for 48 hours;

[0033] (4) The reaction solution in step (3) was filtered, the precipitate was washed with de...

Embodiment 3

[0037] The preparation of CuFeZn composite oxide supported catalyst is specifically:

[0038] (1) According to the molar ratio of Cu, Fe, and Zn in the composite metal oxide is 1:0.25:0.9, weigh the corresponding nitrate solution, and prepare a metal salt solution with a mixed solution concentration of 0.10 mol / L;

[0039] (2) Weigh sodium hydroxide or potassium hydroxide to prepare an alkaline solution with a concentration of 0.80mol / L;

[0040] (3) Add phosphoric acid solution with a mass fraction of 10% to 60-80 mesh activated carbon particles, soak for 4 hours; then ball mill the mixed material to 100-120 mesh, filter, and wash the solid material with deionized water until medium properties, and dried at 120°C to constant weight to obtain a modified activated carbon carrier;

[0041] (4) The active component is 23% of the mass of the carrier, weigh the modified activated carbon; put the carrier in deionized water, control the temperature at 85°C, adopt the co-precipitatio...

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Abstract

The invention discloses a process for synthesizing hydrogenated terphenyl heat-conducting oil, and belongs to the technical field of chemical synthesis. The process comprises the processes of biphenyl synthesis, distillation and hydrogenation. In the biphenyl synthesis process, pure benzene and a catalyst are subjected to a high-temperature reaction in a reactor, the catalyst comprises a carrier and an active component, and the mass of the active component accounts for 10-35% of the mass of the carrier; the carrier is modified activated carbon or a molecular sieve, and the active component is a composite oxide of CuMgAl, CuFeAl, CuFeZn and CaMgZn. In the terphenyl synthesis stage, the supported catalyst with a composite metal oxide as the active component is adopted as the catalyst, so that the selectivity of terphenyl is improved, the generation of by-products such as quaterphenyl and pentaphenyl is reduced, and finally the purity of the hydrogenated terphenyl heat-conducting oil is improved.

Description

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Claims

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Application Information

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Owner SHE COUNTY JINDONG ECONOMIC & TRADE CO LTD
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