One adopts d 1 epd 2 Method for making bleached pulp of Eupatorium adenophorum
A technology of Eupatorium adenophorum pulp, which is applied in the field of pulp and papermaking, and can solve the problems of high viscosity of pulp after bleaching, failure of Eupatorium adenophorum to produce high-whiteness pulp, and damage.
Active Publication Date: 2016-09-21
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING +1
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] Purpose of the present invention is exactly the weak point of above-mentioned prior art, provides a kind of adopting D 1 EpD 2 A method for producing bleached paper pulp of Eupatorium adenophorum. This method realizes the resource utilization of Eupatorium adenophorum. The method has the advantages of high whiteness of bleached pulp, high viscosity of pulp after bleaching, and can be used to prepare paper with higher whiteness , to achieve the purpose of turning harm into wealth, and can effectively solve the current defect that Eupatorium adenophorum cannot produce high-brightness pulp
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0022] Such as figure 1 As shown, a D 1 E p D 2. The method for making Eupatorium adenophorum bleached paper pulp comprises the following steps (the amount of each raw material involved in the embodiments is calculated with the absolute dry raw material quality):
[0023] Step 1: drying the whole plant of Eupatorium adenophorum, removing leaves, cutting into 25mm long pieces, soaking in water at a temperature of 25-80°C for 24 hours, peeling after soaking;
[0024] Step 2, add NaOH, NaOH in tablet 2 The liquid medicine made of S and water is put into an electric heating pressure cooker for cooking. Calculated based on the mass of absolute dry raw materials, the amount of NaOH added is 18-25%. 2 The amount of S added is 15-20%, the liquid ratio is 1:2-4, the temperature is raised from room temperature to 150-180°C, the heating time is 60-120 minutes, the temperature is kept at the highest temperature for 90 minutes, and the entire cooking time is 180-240 minutes;
[0025] ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method for making ageratina adenophora bleaching paper pulp by adopting a D1EpD2 process. The method comprises the following steps: step one, making ageratina adenophora sulfate natural color pulp; step two, adding ClO2 in the pulp to be bleached, washing the bleached pulp by using clear water to be neutral; step three, adding NaOH and H2O2 in the pulp to perform alkali extraction, washing the pulp after reaction by using the clear water to be neutral; step four, adding ClO2 in the pulp to be bleached, washing the bleached pulp by using the clear water to be neutral to obtain the ageratina adenophora bleaching paper pulp. The method can be used for the industrial scale production, and the obtained bleach has high whiteness and high viscosity, and can be used for making paper with higher whiteness and strength with other pulp.
Description
technical field [0001] The invention belongs to the technical field of pulping and papermaking, in particular to a 1 EpD 2 Process for making bleached pulp from Eupatorium adenophorum. Background technique [0002] Eupatorium adenophorum Spreng is a typical alien invasive species, mainly distributed in Yunnan, Guizhou, Sichuan, Chongqing, Guangxi, Hubei and Tibet. Since it invaded our country, it has brought serious threats to our country's agriculture, ecology and environment. It is known that the spreading speed of Eupatorium adenophorum can reach 60 km / year, and has already encroached on a large amount of farmland and forest land. Its hazards include: the whole plant is poisonous, endangering the production of agriculture, forestry and animal husbandry, etc.; the soil fertility is reduced, the land is degraded, and the crop yield is greatly reduced, which can cause a reduction in grain production; the branches and leaves are poisonous, endangering people and other anim...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): D21C9/14D21C9/16D21C1/02D21C3/02
Inventor 管秀琼吴半农杨红霞刘春柳启文刘建容高洪霞谭宗华
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING