Preparation method for C9 hydrogenation petroleum resin

A hydrogenated petroleum resin and petroleum resin technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve the problem that catalyst life cannot meet industrial requirements, insolubility Solve problems such as increased sol content, high sulfur and nitrogen content, and achieve the effects of improving impurity resistance, catalyst life, and low reaction pressure

Inactive Publication Date: 2013-02-13
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The hydrogenation catalysts used in the above-mentioned patents all adopt a one-step method to prepare C9 hydrogenated petroleum resin, but due to the current development of C9 petroleum resin polymerization technology, the yield and output of crude C9 petroleum resin have increased significantly. At the same time, it brings high impurity content, high sulfur and nitrogen content in petroleum resin, especially the increase of insoluble sol content, which leads to the disadvantage of the above patent that the life of the catalyst cannot meet the industrial requirements, and the product color needs to be further improved.

Method used

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  • Preparation method for C9 hydrogenation petroleum resin
  • Preparation method for C9 hydrogenation petroleum resin
  • Preparation method for C9 hydrogenation petroleum resin

Examples

Experimental program
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Effect test

Embodiment 1

[0043] Weigh 500g of pseudo-boehmite, 200g of aluminum hydroxide, 300g of diatomaceous earth and 100g of polyethylene glycol powder, mix well, add 270g of 6% dilute nitric acid aqueous solution for kneading, age at room temperature for 30 minutes, and shape it on an extruder for 3 strips, dried at 120°C for 24 hours, then calcined at 800°C for 2 hours to obtain a catalyst carrier, crushed and sieved to obtain 10-20 mesh particles. Use a predetermined amount of nickel nitrate solution to impregnate 10-20 mesh particles to prepare four kinds of catalysts with different nickel contents, then dry at 120°C, and roast at 420°C for 4 hours to obtain the first-stage hydrodesulfurization catalyst precursor in the method of the present invention . Fill 10ml into the reactor before use, and reduce with hydrogen at 400°C for 3 hours. Catalyst compositions and physicochemical parameters with different nickel contents are listed in Table 2 below.

[0044] Table 2. Hydrodesulfurization ...

Embodiment 2

[0047] Weigh 800g of pseudo-boehmite, 100g of aluminum hydroxide, 100g of diatomaceous earth and 50g of polyethylene glycol powder, mix uniformly, and prepare a first-stage hydrodesulfurization catalyst with a nickel content of 30% according to the preparation method of Example 1. Body, its specific surface area is 143m 2 / g, the pore volume is 0.52ml / g. Fill 10ml into the reactor before use, and reduce with hydrogen at 400°C for 3 hours. Catalyst is marked as 2 # .

Embodiment 3

[0049] Weigh 200g of pseudo-boehmite, 400g of aluminum hydroxide, 400g of diatomaceous earth and 80g of polyethylene glycol powder, mix uniformly, and prepare a first-stage hydrodesulfurization catalyst with a nickel content of 30% according to the preparation method of Example 1. Body, whose specific surface area is 120m 2 / g, the pore volume is 0.54ml / g. Fill 10ml into the reactor before use, and reduce with hydrogen at 400°C for 3 hours. Catalyst is marked as 3 # .

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Abstract

The invention relates to a preparation method for C9 hydrogenation petroleum resin. The C9 hydrogenation petroleum resin is dissolved in organic solvent, and the concentration of the C9 hydrogenation petroleum resin is 5wt %-30wt%. The C9 hydrogenation petroleum resin is filtered to remove undissolved substances, then subjected to a first section of hydrodesulfurization process and a second section of hydrogenation decoloration process, and finally subjected to the process of decompression rectification and solvent recovery to obtain C9 hydrogenation petroleum resin products. The preparation method adopts two-section hydrogenation, improves reaction activity, selectivity and impurity resistant capability, is wide in adaptability of C9 petroleum resin raw materials, and obtains C9 petroleum resin through adoption of thermal polymerization or catalytic polymerization. No matter impurity content in resin solution is high or low, particularly, when sulphur content is high in the resin solution, the two-step hydrogenation process can be carried out through the preparation method, and the C9 hydrogenation petroleum resin with high performance is obtained. Through the first section of hydrodesulfurization, hydrogenation noble metal catalyst in the second section is effectively protected. Service life of catalyst is greatly prolonged. Reaction pressure of the two-section hydrogenation is quite low, and industrial production cost is little.

Description

technical field [0001] The invention relates to the field of petrochemical industry, and relates to a method for producing C9 hydrogenated petroleum resin from C9 petroleum resin. Background technique [0002] Petroleum resin is a kind of thermoplastic resin prepared by thermal polymerization or catalytic polymerization with the by-products C5 and C9 in the process of steam cracking to ethylene as raw materials. It has good light resistance, excellent electrical insulation, and good solubility. Resins, synthetic resins, plasticizers, etc. have good compatibility, and are widely used in coatings, special adhesives, inks, etc. [0003] Hydrogenation of petroleum resin saturates the double bonds and some benzene rings in the petroleum resin, removes the residual halogen elements in the resin during polymerization, and improves the chromaticity, light and heat stability, oxidation stability and UV resistance of the resin , Improve the product quality and expand the use. With t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F240/00C08F8/04B01J23/755B01J23/44
Inventor 段大勇吴俊华张立群李洁齐彦伟
Owner CHINA PETROLEUM & CHEM CORP
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