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Method for hydrofining C9 petroleum resin

A carbon nine petroleum resin and hydrorefining technology, which is applied in the petroleum industry, hydrotreating process, and hydrocarbon oil treatment, etc., can solve the problems of large investment, large number of equipment, complicated process, etc., and achieve simple process and high hydrogenation pressure. Small, cost-saving effect

Active Publication Date: 2013-12-11
南京齐东化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high-grade C9 petroleum resin cannot be produced domestically. For example, the hydrogenated resin of 0# color is an imported product, and the price is twice as high as that of the domestic general resin. The price is as high as 24000 yuan
[0003] In foreign countries, the hydrogenation and refining of C9 petroleum resin mostly adopts the two-stage hydrogenation method. The process is cumbersome, and the pressure of the second-stage hydrogenation generally reaches 10-15MPa. The number of equipment is large and the investment is large.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Catalyst preparation:

[0020] (1) Co-precipitation: At 70°C, add dropwise 0.8mol / l NaOH solution to a certain volume of 1mol / L nickel nitrate solution to pH = 13, continue stirring for 0.5 hours; raise the temperature to 90°C, dropwise add a certain volume of 0.9mol / L Na 2 SiO 3 After the solution (according to the mass ratio of nickel in nickel nitrate and silicon dioxide in sodium silicate is 1:3 for dropwise addition), stir for 30 minutes. Stand and age for 4 hours, filter.

[0021] (2) Washing and calcination: take the precipitate obtained by filtering in step (1), wash it with distilled water until the pH value of the washing liquid remains unchanged; dry the washed solid at 110°C for 3 hours, and then calcinate at 500°C for 3 hours.

[0022] (3) Activation: After calcination, the material is pulverized, pressed into tablets, and then pulverized to 100 meshes, and the particles are activated with hydrogen to gradually raise the temperature to 420°C to obtain N...

Embodiment 2

[0024] Catalyst preparation

[0025] (1) Co-precipitation: The procedure is the same as Example 1, wherein the mass ratio of nickel in nickel nitrate and silicon dioxide in sodium silicate is added dropwise at a ratio of 1:5.5.

[0026] (2), (3) are exactly the same as Example 1.

[0027] The mass of nickel in the prepared catalyst was 15% of the total mass of the catalyst.

Embodiment 3

[0029] C9 Petroleum Resin Refined

[0030] (1) Remove impurities: Take 7# C9 petroleum resin and dissolve it in cyclohexane solvent, wherein the mass percent concentration of C9 petroleum resin is 20%. At 40°C, add activated clay with a mass of 5% of C9 petroleum resin and stir for 30 minutes to absorb the colloid in the resin and filter out the clay.

[0031] (2) Hydrofining: Take 1400ml of the filtrate obtained in step (1) and add it into a 2000ml autoclave, then add 8.4 grams of the catalyst that has been reductively activated in Example 1, and after nitrogen replacement in the autoclave, feed hydrogen, and Press down to 12MPa, heat up to 210 degrees, react for 3 hours, cool down after the reaction, take out the liquid, leave the catalyst in the reactor, add the raw materials for the next reaction, and add 2 grams of new catalyst at the same time, and so on.

[0032] (3) Distillation: The extracted hydrogenation reaction solution was stirred at 40°C with 1% activated clay ...

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PUM

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Abstract

The invention discloses a method for hydrofining C9 petroleum resin. The method comprises the following steps of: dissolving the C9 petroleum resin in a solvent, and performing adsorption filtration; putting a filtrate into an autoclave, adding a catalyst into the autoclave, introducing hydrogen, reacting under stirring, and pumping out a reaction solution in the autoclave; and distilling the reaction solution under reduced pressure to remove the solvent to obtain a refined resin. The process is simple, safe and low in reaction pressure; and the catalyst can be reused, so the cost is low.

Description

technical field [0001] The invention specifically relates to a method for hydrogenation and refining of C9 petroleum resin. Background technique [0002] C9 petroleum resin is a product produced by polymerization from the C9 mixture that is a by-product of ethylene cracking. It is widely used in coatings, inks, adhesives, road marking paints and other fields. At present, the domestic production is mainly 7# to 12# products. Mainly, it is used in products with low requirements. However, the high-grade C9 petroleum resin cannot be produced domestically. For example, the hydrogenated resin of 0# color is an imported product, and the price is twice as high as that of the domestic general resin. The price is as high as 24,000 yuan. [0003] In foreign countries, the hydrogenation and refinement of C9 petroleum resin mostly adopts the two-stage hydrogenation method. The process is cumbersome. The pressure of the two-stage hydrogenation generally needs to reach 10-15MPa, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/02
Inventor 刘卫星陈国俊梁智顺
Owner 南京齐东化工有限公司
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