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A kind of utilization method of straw

A straw and paper technology, applied in the field of functional materials, can solve the problems of not being able to function as a fertile field, the dilemma of comprehensive utilization of straw, and affecting the emergence rate of crops.

Inactive Publication Date: 2021-07-20
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) Direct incineration treatment, so that not only the useful resources will be discarded in vain, but also the incineration of straw will produce a large amount of carbon dioxide, causing serious environmental pollution;
[0004] (2) Return the straw to the field, return the untreated dry straw directly to the field, there is no fermentation treatment time, and the non-rotten straw will not only fail to fertilize the field, but will affect the emergence rate of the crop;
[0005] (3) Straw is processed into feed or used as raw material for papermaking and pulping. However, due to technical reasons, some key technical problems have not yet been broken through, and the comprehensive utilization of straw is facing difficulties.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for utilizing straw, which uses straw as a raw material to prepare a paper base, and the paper base is coated, calcined, and hydrothermally treated to obtain a carbon-supported tungsten sulfide catalyst, comprising the following steps:

[0026] (1) Using seawater rice straw as raw material and seawater as the medium, cellulose is obtained by alkaline cooking. The Kappa value of the fiber is 22.6, the ash content is 2.4, the degree of beating is 45°SR, and the final weight is 120g / m 2 spare paper;

[0027] (2) 1gNa 2 WO 4 2H 2 O was dissolved in 15ml deionized water, and hydrochloric acid was added with a dropper until no precipitation occurred. Use deionized water to wash the precipitate in an ice bath until neutral, add deionized water to the washed precipitate to obtain a suspension, stir vigorously in a water bath at 50°C for 10 minutes, add 0.9g oxalic acid, continue stirring for 5 minutes, and the precipitate dissolves , the suspension becomes a transp...

Embodiment 2

[0031] A method for utilizing straw, which uses straw as a raw material to prepare a paper base, and the paper base is coated, calcined, and hydrothermally treated to obtain a carbon-supported tungsten sulfide catalyst, comprising the following steps:

[0032] (1) Using seawater rice straw as raw material and seawater as the medium, cellulose is obtained by alkaline cooking. The Kappa value of the fiber is 22.6, the ash content is 2.4, the degree of beating is 45°SR, and the final weight is 120g / m 2 spare paper;

[0033] (2) 1.5g Na 2 WO 4 2H 2 O was dissolved in 15ml deionized water, and hydrochloric acid was added with a dropper until no precipitation occurred. Use deionized water to wash the precipitate in an ice bath to neutrality, add deionized water to the washed precipitate to obtain a suspension, stir vigorously in a water bath at 50°C for 10 minutes, add 1.2g oxalic acid, continue stirring for 5 minutes, the precipitate dissolves and suspends Liquid becomes transp...

Embodiment 3

[0037] A method for utilizing straw, which uses straw as a raw material to prepare a paper base, and the paper base is coated, calcined, and hydrothermally treated to obtain a carbon-supported tungsten sulfide catalyst, comprising the following steps:

[0038] (1) Using seawater rice straw as raw material and seawater as the medium, cellulose is obtained by alkaline cooking. The Kappa value of the fiber is 22.6, the ash content is 2.4, the degree of beating is 45°SR, and the final weight is 120g / m 2 spare paper;

[0039] (2) Dissolve 2gNa2WO4·2H2O in 15ml of deionized water, and add hydrochloric acid with a dropper until no precipitation occurs. Use deionized water to wash the precipitate in an ice bath until neutral, add deionized water to the washed precipitate to obtain a suspension, stir vigorously in a water bath at 50°C for 10 minutes, add 1.8g oxalic acid, continue stirring for 5 minutes, the precipitate dissolves, and suspends Liquid becomes transparent sol, and pH is...

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Abstract

The invention relates to a utilization method of straw, in particular to a utilization method of seawater rice straw, and belongs to the field of functional materials. The invention uses straw as a raw material to prepare a paper base, and the paper base is coated, calcined, and treated by a hydrothermal method to obtain a carbon-loaded tungsten sulfide catalyst. The carbon-supported tungsten sulfide catalyst of the present invention is applied to the electrolysis water test, and with unsupported WS 2 Catalyst is carried out the comparison of catalytic performance, finds that the catalyst catalytic effect that adopts the present invention to obtain is far better than unsupported WS 2 The catalytic effect of the catalyst, and the innovative use of straw fiber material as the substrate in the present invention greatly reduces the preparation cost of the catalyst, turns waste into treasure, and fully utilizes straw with high added value. Compared with the prior art, it has Significant progress.

Description

technical field [0001] The invention relates to a utilization method of straw, in particular to a utilization method of seawater rice straw, and belongs to the field of functional materials. Background technique [0002] Protecting the ecological balance of nature is currently the hottest issue in the world, and the reuse of agricultural straw waste has become the focus of attention. my country's straw resources are very rich, but at present there are mainly the following ways to deal with them: [0003] (1) Direct incineration treatment, so that not only the useful resources will be discarded in vain, but also the incineration of straw will produce a large amount of carbon dioxide, causing serious environmental pollution; [0004] (2) Return the straw to the field, return the untreated dry straw directly to the field, there is no fermentation treatment time, and the non-rotten straw will not only fail to fertilize the field, but will affect the emergence rate of the crop; ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/047B01J37/02B01J37/08B01J37/10C25B11/091C25B1/04
CPCB01J27/047B01J37/0217B01J37/084B01J37/10C25B1/04C25B11/075Y02E60/36
Inventor 宋晓明高珊珊刘金岭高喜盈陈夫山于世涛蒋宇
Owner QINGDAO UNIV OF SCI & TECH