CN1566520A - Pulping process by acid catalyzed ethanol method - Google Patents
Pulping process by acid catalyzed ethanol method Download PDFInfo
- Publication number
- CN1566520A CN1566520A CN 03134346 CN03134346A CN1566520A CN 1566520 A CN1566520 A CN 1566520A CN 03134346 CN03134346 CN 03134346 CN 03134346 A CN03134346 A CN 03134346A CN 1566520 A CN1566520 A CN 1566520A
- Authority
- CN
- China
- Prior art keywords
- pulping
- ethanol
- raffinate
- digester
- cooking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 238000004537 pulping Methods 0.000 title claims abstract description 27
- 239000002253 acid Substances 0.000 title claims abstract description 7
- 238000000034 method Methods 0.000 title abstract description 14
- 238000005406 washing Methods 0.000 claims abstract description 27
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 238000010411 cooking Methods 0.000 claims abstract description 12
- 238000005516 engineering process Methods 0.000 claims abstract description 11
- 238000006073 displacement reaction Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 26
- 238000009835 boiling Methods 0.000 claims description 14
- 238000003860 storage Methods 0.000 claims description 13
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000003643 water by type Substances 0.000 claims description 2
- 230000002411 adverse Effects 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 claims 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 3
- 239000003054 catalyst Substances 0.000 abstract description 3
- 229910052710 silicon Inorganic materials 0.000 abstract description 3
- 239000010703 silicon Substances 0.000 abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052814 silicon oxide Inorganic materials 0.000 abstract description 2
- 238000004090 dissolution Methods 0.000 abstract 1
- 239000000835 fiber Substances 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 description 15
- 229920001131 Pulp (paper) Polymers 0.000 description 9
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229920005610 lignin Polymers 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- Paper (AREA)
Abstract
本发明涉及一种乙醇法造纸制浆工艺，尤其涉及一种以酸催化的乙醇法制浆工艺。属于造纸制浆技术领域。该工艺采用酸做催化剂，不但提高了蒸煮效率，而且减缓了纤维原料中氧化硅的溶出，缓解了制浆残液处理过程中的硅干扰问题；采用等温逆流锅内热置换洗涤技术，使纸浆洗涤效率提高，制浆蒸煮残液的热能品位提高；最后应用透平机和发电机将制浆蒸煮残液中的热能转换为电能，提高了制浆企业的电力自给率。因此本发明能有效提高乙醇法制浆企业的经济效益。The invention relates to an ethanol papermaking pulping process, in particular to an acid-catalyzed ethanol pulping process. The invention belongs to the technical field of papermaking and pulping. The process uses acid as a catalyst, which not only improves the cooking efficiency, but also slows down the dissolution of silicon oxide in the fiber raw material, and alleviates the problem of silicon interference in the pulping raffinate treatment process; the isothermal countercurrent pot internal heat displacement washing technology is used to make pulp washing The efficiency is improved, and the thermal energy grade of the pulping and cooking raffinate is improved; finally, the heat energy in the pulping and cooking raffinate is converted into electric energy by using a turbine and a generator, which improves the power self-sufficiency rate of the pulping enterprise. Therefore, the invention can effectively improve the economic benefits of the ethanol pulping enterprises.
Description
One, affiliated technical field
The present invention relates to a kind of Ethanol Method paper-making pulping process, relate in particular to a kind of acid catalyzed ethanol pulping technology.Belong to the pulping technology for paper-making field.
Two, background technology
The ethanol pulping technology is considered to one of clean paper making pulping technique of potentialization.Yet when using base catalyst or self-catalysis, the pH value of cooking liquor is higher, can not effectively stop the stripping of institute's silicon oxide-containing in the fibrous raw material, causes having the silicon interference problem in the subsequent treatment of pulping and digesting raffinate; In addition, the cooling washing technology of boiling disposed slurry has reduced the heat energy grade of slurrying raffinate, is unfavorable for the raising of slurrying energy service efficiency.
Three, summary of the invention
In order to solve the silicon interference problem that exists in the ethanol pulping boiling raffinate processing procedure, further improve slurrying energy service efficiency, the invention provides the acid catalyzed ethanol pulping technology of a cover, this technology not only can shorten ethanol pulping boiling and slurry washing time, the heat energy that also available slurrying raffinate is contained is produced the very high electric energy of energy grade, improves the electric power degree of self-sufficiency of slurrying enterprise.Therefore the present invention can effectively improve the ethanol pulping economic benefit of enterprises.
The technical solution adopted for the present invention to solve the technical problems mainly comprises the plurality of processes of utilizing of boiling, washing and slurrying raffinate.(a) fibrous raw material that will handle through getting the raw materials ready of boiling is packed in the boiling vessel, and with after cleaning solution and part acetate, ethanol mix for the first time, by fibrous raw material: the liquor ratio of liquid=1: 7～11 (kg/l) pumps in the digester as cooking liquor, and the addition of ethanol is an ethanol in the cooking liquor: water=45～55% (percent by volume); Then, to the liquid forced circulation in the digester, liquid is heated rapidly simultaneously, improve temperature to 175～200 ℃ in the digester by heater by circulating pump, insulation a period of time, the lignin in the raw material is fully dissolved, obtain paper pulp.(b) the washing general cleaning solution second time pumps in the digester, and the boiling raffinate in the digester is replaced to reclaiming in the liquid storage tank; Pump into secondary washing liquid in the digester and be called once washing liquid after to the paper pulp displacement washing; With the temperature of newly preparing in three cleaning solution storage tanks is that 175～200 ℃ of ethanol waters pump in the digester, and the cleaning solution in the digester is displaced, and is stored in the once washing liquid storage tank; At this moment, the liquid that pumps in the digester is called secondary washing liquid; At last, feed water vapour, the cleaning solution in the digester is replaced to the secondary washing liquid storage tank.After cleaning solution is no longer discharged, close cleaning solution and import and export, with steam-jet vacuum pump slurry is carried and being heated up in a steamer, reclaim the ethanol in the paper pulp.Steam and ethanol mist are used for directly heating the ethanol water of three cleaning solution storage tanks; After ethanol reclaimed, paper pulp was discharged in boiling vessel.(c) utilization of the slurrying raffinate slurrying raffinate that will reclaim in the liquid storage tank is sent into the hydraulic turbine machine by choke valve and pipeline, and drives turbine and produce mechanical energy, and this mechanical energy is converted into electric energy through generator again; Low-energy liquid is collected standby.
The invention has the beneficial effects as follows: improve the ethanol pulping boiling efficiency, the preceding washing of floating of paper pulp is finished in digester, and shortened the pulp washing time, also can realize the comprehensive utilization of ethanol pulping energy, energy consumes low; Simplify technical process and equipment, reduced the slurrying production cost, thereby had good social benefit and economic benefit.
Four, specific embodiment
(a) fibrous raw material that will handle through getting the raw materials ready of boiling is packed in the boiling vessel, and with after cleaning solution and part ethanol mix for the first time, by fibrous raw material: the liquor ratio of liquid=1: 7～11 (kg/l) pumps in the digester as cooking liquor, the addition of ethanol is an ethanol in the pot inner cooking liquid: water=45～55% (percent by volume), and again by acetate: the liquor ratio of fibrous raw material=1～10% (mass percent) adds acetate and does catalyst usefulness; Then, to the liquid forced circulation in the digester, and the temperature in the digester is increased to 175～200 ℃ by circulating pump, insulation 30～120min obtains paper pulp after lignin in the raw material is fully dissolved.(b) the washing general cleaning solution second time pumps in the digester, and the boiling raffinate in the digester is replaced to reclaiming in the liquid storage tank; Pump into secondary washing liquid in the digester and be called once washing liquid after to the paper pulp displacement washing; With the temperature of new preparation in three cleaning solution storage tanks is that 175～200 ℃, concentration are that 45～55% ethanol water pumps in the digester, and the once washing liquid in the digester is displaced, and is stored in the once washing liquid storage tank; Pump into liquid in the digester and be called secondary washing liquid after to pulp washing; At last, feed water vapour, the cleaning solution in the digester is replaced to the secondary washing liquid storage tank.After cleaning solution is no longer discharged, close cleaning solution and import and export, carry with steam-jet vacuum pump (specified vacuum is less than 5Kpa) and heat up in a steamer and reclaim ethanol in the paper pulp.Steam and ethanol mist are used for directly heating the ethanol water of three cleaning solution storage tanks; After reclaiming ethanol, paper pulp is discharged in boiling vessel.(c) utilization of slurrying raffinate will be reclaimed slurrying raffinate (175～200 ℃ of the temperature in the liquid storage tank, pressure 1.6～2.5Mpa) is sent into the hydraulic turbine machine by choke valve and pipeline, and drive turbine and produce mechanical energy, this mechanical energy is converted into electric energy through generator again.Fluid flow by turbine is suitable can keep turbine to operate as continuously in pulping process.It is standby that the raffinate of process energy recovery enters fluid reservoir.
Claims (2)
1, the acid catalyzed ethanol pulping technology of a kind of usefulness.The fibrous raw material that to handle through getting the raw materials ready is packed in the digester, adds cooking liquor again in pot, and a liquor ratio is 1: 7～11 (mass volume ratios) in the pot, makes kettle temperature be increased to 175～200 ℃ by heater, and is incubated 30～120min.The preparation feature of its cooking liquor is: give to add ethanol and acetate formation cooking liquor in the once washing liquid, after the addition of acetate and ethanol should be able to guarantee that cooking liquor adds in the pot, the volume ratio of ethanol and water is 45～55% in the interior liquid of digester, and the mass ratio of acetate and fibrous raw material is 1～10%.
2, according to the acid catalyzed ethanol pulping technology of the described usefulness of claim 1, after finishing the pulping and digesting operation, in digester, carry out isothermal adverse current displacement washing three times with 45～55% ethanol waters (volume ratio), it is characterized in that: a displacement washing is the equal-volume displacement washing, gained pulping and digesting raffinate temperature is 175～200 ℃, pressure is 1.60～2.5Mpa, and it is stored in the storage tank; (temperature is 175～200 ℃, and pressure is 1.60～2.5Mpa) to send in the turbine, drives turbine and drives generator by it, and the thermal power transfer that contained of slurrying raffinate is an electric energy the most at last with the boiling raffinate by pipeline and choke valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03134346 CN1566520A (en) | 2003-07-03 | 2003-07-03 | Pulping process by acid catalyzed ethanol method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03134346 CN1566520A (en) | 2003-07-03 | 2003-07-03 | Pulping process by acid catalyzed ethanol method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1566520A true CN1566520A (en) | 2005-01-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03134346 Pending CN1566520A (en) | 2003-07-03 | 2003-07-03 | Pulping process by acid catalyzed ethanol method |
Country Status (1)
| Country | Link |
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| CN (1) | CN1566520A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101148830B (en) * | 2006-09-19 | 2011-07-27 | 中国科学院过程工程研究所 | Method for separating straw components by carrying steam explosion-microwave coupling treatment to plant straw |
| CN102277760A (en) * | 2011-08-30 | 2011-12-14 | 内蒙古科技大学 | Pre-processing method in process of producing paper pulp |
| CN102704298A (en) * | 2012-04-28 | 2012-10-03 | 大连工业大学 | Process and device for pulping by reversely extracting grass raw materials |
| CN102733223A (en) * | 2012-06-18 | 2012-10-17 | 中国科学院广州能源研究所 | Pulping method by catalysis of low boiling point solvent with diluted acid generated from xylose residue and furfural residue |
| CN109680532A (en) * | 2019-01-20 | 2019-04-26 | 王忠良 | A kind of vinasse ethyl alcohol organic solvent pulping by cooking method |
| CN114687247A (en) * | 2022-03-16 | 2022-07-01 | 湖南艾华集团股份有限公司 | Electrolytic paper for low-temperature aluminum electrolytic capacitor and preparation method thereof |
-
2003
- 2003-07-03 CN CN 03134346 patent/CN1566520A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101148830B (en) * | 2006-09-19 | 2011-07-27 | 中国科学院过程工程研究所 | Method for separating straw components by carrying steam explosion-microwave coupling treatment to plant straw |
| CN102277760A (en) * | 2011-08-30 | 2011-12-14 | 内蒙古科技大学 | Pre-processing method in process of producing paper pulp |
| CN102277760B (en) * | 2011-08-30 | 2014-05-14 | 内蒙古科技大学 | Pre-processing method in process of producing paper pulp |
| CN102704298A (en) * | 2012-04-28 | 2012-10-03 | 大连工业大学 | Process and device for pulping by reversely extracting grass raw materials |
| CN102704298B (en) * | 2012-04-28 | 2014-12-31 | 大连工业大学 | Process and device for pulping by reversely extracting grass raw materials |
| CN102733223A (en) * | 2012-06-18 | 2012-10-17 | 中国科学院广州能源研究所 | Pulping method by catalysis of low boiling point solvent with diluted acid generated from xylose residue and furfural residue |
| CN102733223B (en) * | 2012-06-18 | 2015-03-18 | 中国科学院广州能源研究所 | Pulping method by catalysis of low boiling point solvent with diluted acid generated from xylose residue and furfural residue |
| CN109680532A (en) * | 2019-01-20 | 2019-04-26 | 王忠良 | A kind of vinasse ethyl alcohol organic solvent pulping by cooking method |
| CN109680532B (en) * | 2019-01-20 | 2021-12-10 | 王忠良 | Method for cooking and pulping vinasse ethanol by organic solvent |
| CN114687247A (en) * | 2022-03-16 | 2022-07-01 | 湖南艾华集团股份有限公司 | Electrolytic paper for low-temperature aluminum electrolytic capacitor and preparation method thereof |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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