Dry paper pulp production method

Abstract

The invention provides a dry paper pulp production method. The dry paper pulp production method specifically comprises the steps of waste paper pretreatment, waste paper crushing, dry pulping, pulse dust removal, strong magnetic iron removal, hydraulic packaging and the like. The dry paper pulp production method is skillful in design and simple in steps, aiming at the characteristic of forbiddingwaste orders in China at present, waste paper is simply processed, waste can be turned into wealth, waste paper garbage (which cannot pass customs) which originally cannot pass customs is changed intoprimarily processed waste paper pulp (which is allowed to be imported in China) which can pass customs; and the quality of the waste paper pulp subjected to primary treatment is far higher than thatof waste paper recycled at present in China; in paper mills in China, the dry paper pulp can be directly mixed with raw pulp for use, reprocessing is not needed, the effect is very good, and the method is deeply welcomed by paper mills in China.

Description

technical field [0001] The invention relates to the technical field of pulping, in particular to a dry pulp production method. Background technique [0002] As we all know, my country is a big paper-making country, with a total annual output of various paper and cardboard exceeding 73.5 million tons, for which the need for various fiber resources will exceed 70 million tons; however, my country is also a country with a shortage of forest resources, and fiber resources for papermaking Extremely scarce. In order to meet the needs of papermaking, my country needs to import more than 20 million tons of waste paper and more than 8 million tons of virgin wood pulp annually. However, as our country promulgated the most stringent environmental protection laws in recent years, especially since January 2019, our country has fully launched the "ban on waste", and its launch represents the domestic ban on importing 24 kinds of polluting pollutants from abroad. Solid waste, including pa...

AI Technical Summary

Problems solved by technology

However, as our country promulgated the most stringent environmental protection laws in recent years, especially since January 2019, our country has fully launched the "ban on waste", and its launch represents the domestic ban on importing 24 kinds of polluting pollutants from abroad. Solid waste, including paper product waste, prevents a large amount of foreign waste paper from entering the domestic market through customs, but at the same time, there is a huge domestic demand for waste paper pulp, and the price of pulp remains high

The fundamental reason why foreign waste paper cannot enter the country is that the waste paper contains a lot of other garbage, which cannot pass the inspection of the customs. How to simply process the waste paper to meet the requirements of my country's customs clearance is an urgent problem to be solved at present.

[0003] At present, waste paper pulping generally adopts wet pulping, which requires a large amount of chemicals, water, cooking pots, etc., which pollutes a lot, is not environmentally friendly, and has strict requirements on production equipment and production sites. Building a waste paper The investment in the pulp mill is huge, especially it is basically difficult to realize the construction of a factory overseas

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