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Rosin production process

A production process and technology for rosin, applied in the field of forest product chemical manufacturing, can solve problems such as affecting the quality of rosin products, unfavorable clarification of rosin slag water, inability to separate sewage and slag, etc., and achieve the effects of short time, reduced discharge, and reduced loss.

Active Publication Date: 2018-04-27
GUANGDONG HUALIN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent CN103087635B discloses a processing method of turpentine, comprising the following steps: a, dissolving: dissolving the rosin with a dissolving liquid, the components and weight percentages of the dissolving liquid include: 55% to 82% turpentine, 17.5% ~ 44.5% water and 0.1% ~ 0.5% oxalic acid; b, clarification, coarse filtration: put the dissolved turpentine liquid into a transition pot for clarification, then coarse filtration to obtain the coarse filtrate; c, pickling: add oxalic acid to carry out Washing; d, water washing: add hot water to wash; e, clarification, fine filtration: put into transition pot again and carry out clarification, then fine filtration; f, heating distillation: put in rectifying tower; This invention can make rosin pass through The rosin and turpentine obtained after processing are of good quality, thereby ensuring the demand of downstream industries, but the softening point of the rosin obtained by adopting the invention is low, and the product quality needs to be further improved
The disadvantages of these processes are: turpentine dissolving is incomplete, and the grease recovery is less; turpentine contains low and unstable oil content, which is unfavorable for the clarification of turpentine slag water; there is no washing process, and the sewage and slag mixed in the grease liquid cannot be separated. Affect the quality of fat liquid, and ultimately affect the quality of rosin products

Method used

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  • Rosin production process
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1, a kind of rosin production technology

[0045] Described rosin production technique, comprises the following steps:

[0046] S1 sends the pine resin into the dissolving pot, uses two dissolving pots to dissolve intermittently, feeds water vapor heating at the bottom of the dissolving pot to make the rosin dissolve in the dissolving solution in the dissolving pot, and the dissolving solution addition is 32% of the above-mentioned rosin weight, dissolves The temperature is 96°C, and the dissolved fat liquid is obtained;

[0047] S2 Wash the dissolved fat liquid obtained in step S1 with water, the amount of water added for washing is 100L / h, the water temperature is 92°C, and the sewage and residue in the lower layer are discharged to obtain the upper layer of fat liquid after washing;

[0048] S3 sends the washed upper layer fat liquid obtained in step S2 into a high-efficiency clarification tank for clarification, and discharges the slag water at the botto...

Embodiment 2

[0052] Embodiment 2, a kind of rosin production process

[0053] Described rosin production technique, comprises the following steps:

[0054] S1 sends turpentine into the dissolving pot, uses two dissolving pots to dissolve intermittently, feeds water vapor heating at the bottom of the dissolving pot to make the rosin dissolve in the dissolving solution in the dissolving pot, and the dissolving solution addition is 38% of the above-mentioned rosin weight, dissolves The temperature is 100°C, and the dissolved fat liquid is obtained;

[0055] S2 Wash the dissolved fat liquid obtained in step S1 with water, the amount of water added for washing is 800L / h, the water temperature is 98°C, and the sewage and residue in the lower layer are discharged to obtain the upper layer of fat liquid after washing;

[0056] S3 sends the washed upper layer fat liquid obtained in step S2 into a high-efficiency clarification tank for clarification, and discharges the slag water at the bottom to o...

Embodiment 3

[0060] Embodiment 3, a kind of rosin production process

[0061] Described rosin production technique, comprises the following steps:

[0062] S1 sends turpentine into the dissolving pot, uses two dissolving pots to dissolve intermittently, feeds water vapor heating at the bottom of the dissolving pot to make the rosin dissolve in the dissolving solution in the dissolving pot, and the dissolving solution addition is 36% of the above-mentioned rosin weight, dissolves The temperature is 98°C, and the dissolved fat liquid is obtained;

[0063] S2 Wash the dissolved fat liquid obtained in step S1 with water, the amount of water added for washing is 400L / h, the water temperature is 95°C, and the sewage and residue in the lower layer are discharged to obtain the upper layer of fat liquid after washing;

[0064] S3 sends the washed upper layer fat liquid obtained in step S2 into a high-efficiency clarification tank for clarification, and discharges the slag water at the bottom to ob...

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Abstract

The invention belongs to the technical field of forest chemical manufacture, and particularly relates to a rosin production process which includes the steps: feeding pine gum into a dissolving pan anddissolving the pine gum; washing dissolved gum liquid; clarifying washed upper gum liquid; recycling gum liquid from the clarified gum liquid and slag water to obtain good gum liquid and then filtering the good gum liquid; feeding the filtered gum liquid into a pinene pan and distilling the gum liquid in a distillation tower; recycling high-quality oil and heavy oil; distilling a non-evaporatingportion to serve as crude rosin; collecting the crude rosin into a rosin bed; collecting volatilized hot rosin; naturally cooling the non-evaporating portion to obtain rosin. The rosin production process has the advantages of pine gum dissolving completeness, gum liquid washing completeness and remarkable gum liquid recycling effect. In addition, the rosin production process can further improve product quality, increase the softening point of a product, reduce the unsaponifiable matter content of the rosin and reduce ash content.

Description

technical field [0001] The invention belongs to the technical field of manufacturing forestry chemicals, and in particular relates to a rosin production process. Background technique [0002] Rosin, also known as gum rosin, cooked rosin, and cooked incense, is a natural resin obtained by distilling the viscous liquid secreted from pine trees. It is a transparent, brittle solid substance with a color from light yellow to light brown and a shiny surface. . The main component of rosin is resin acid with a relative molecular weight of 302.46. The main uses of rosin are: mainly used in papermaking, adhesives, paints, inks and other industries. Rosin is the main raw material of rosin modified resin; in papermaking, rosin is mainly used as sizing agent; rosin is often used as raw material of tackifying resin in the production of hot melt adhesive and pressure sensitive adhesive. [0003] Domestic rosin production has a long history and stable production process. Many enterprises...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09F1/02
CPCC09F1/02
Inventor 黎月清张陆春祝军郭超仁
Owner GUANGDONG HUALIN CHEM
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