Enzymatic chemical pulping of environmental protec

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Environment-friendly enzymatic chemical pulping machine New Technology

8B-type was determined by measuring the whiteness of the ISO brightness of pulp, in accordance with the relevant national standards for the slurry measured physical properties. 2 Results and discussion 2.1 Enzymatic chemical mechanical pulp of wheat straw pulp results enzymatic chemical pulping and mechanical pulping prepared several other pulp and wheat straw chemical pulp results in Table l. Table 1 were prepared by a variety of pulp and pulping of wheat straw chemical pulp results compared with conventional chemical pulping, chemical pulping and mechanical by enzyme enzymatic chemical pulping chemicals can be improved cooking efficiency and to achieve a more uniform pulp, thereby reducing the Kappa, to improve the degree of lignin removal, lower reject rates. Chemistry cooking while also reducing the consumption of alkali effect at the time, leading to the residual black liquor effective alkali concentration. This means that you can get the same nature in the case of pulp, chemicals to reduce the amount of chemical cooking segment, reducing waste on the environment. The fine pulp yield pulp, although a slight decline, but little change. With the enzyme compared to the results of chemical pulp, mechanical pulp can be further reduced enzymatic chemical pulp Kappa number and improve the degree of lignin removal, while the cooking process to further reduce the chemical consumption of effective alkali, which can achieve more under the conditions of low-alkali pulping. The fine pulp pulp yield and reject rate of change Ku Changtu mortar building 8 Volume 2 2002 3 of the small. Will be prepared by the two pulp and chemical pulp, compared with the respective control pulp, a mechanical treatment shows an increase, decrease Kappa from the point of view, the contribution of enzyme treatment segment increased from 4.79% to l0 .02%, the efficiency of enzyme treatment segment has doubled. 2.2 The enzymatic machinery of wheat straw chemical pulp of various physical properties of Table 2, the physical properties of wheat straw chemical pulp can see from Table 2, compared with conventional chemical pulp, enzymatic chemical pulp brightness and strength properties were increased in all shows that enzyme treatment can improve the physical properties of the pulp. However, compared with the enzymatic pulping, chemical pulping by enzymatic machinery, in addition to the whiteness of the pulp can improve the outside (an increase of 2.7% ISO), pulp tensile strength, tear strength, bursting strength and folding and other performance indicators is somewhat lower intensity, indicating that mechanical pretreatment of the raw material of pulp strength will have some adverse effects. However, due to the strength of enzyme treatment to improve the section on the role of mechanical enzymatic chemical pulp also has high intensity performance indicators, including tear strength compared with conventional chemical pulp, which had been raised. 3 Conclusion Mechanical enzymatic chemical pulping process is a chemical pulping process than traditional environmental protection more effective pulping process,[link widoczny dla zalogowanych], using the technology can effectively improve the pulp cooking efficiency and enzyme efficiency, increase the degree of lignin removal to reduce the consumption of cooking chemicals and to make the pulp strength properties at the same time maintain a certain increase of pulp brightness. (

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