Filter paper waste sheet recycling technology
A technology for filter paper and waste paper, which is applied in the field of filter paper waste paper recycling and reuse process, can solve problems such as increasing costs, and achieve the effect of reducing costs and achieving obvious sales results.
Inactive Publication Date: 2019-09-03
SHANDONG RENFENG SPECIAL MATERIALS
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AI Technical Summary
Problems solved by technology
Due to the pressure of environmental protection, the external companies that buy and sell paper scraps have greatly reduced the purchase of difficult-to-handle paper scraps. This has led to the fact that the paper scraps that were originally disposable waste products have directly become "garbage" that is difficult to dispose of, and the cost has increased.
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0025] Embodiment 1: the filter paper waste paper edge recycling process of the present invention, concrete steps are:
[0026] (1) Put the filter paper waste paper side into the pulper, add water, and add hypochlorite at the same time;
[0027] (2) Open the pulper to disintegrate the above mixture;
[0028] (3) using a refiner to finely grind the mixture pulverized by the pulper, and finely grind the mixture into a fine slurry;
[0029] (4) adding sodium thiosulfate in the process of fine grinding of fine pulp;
[0030] (5) filter the fine slurry through a pressure sieve;
[0031] (6) Dilute fine pulp concentration;
[0032] (7) The fine pulp is dried on the Internet and formed into paper;
[0033] (8) Pass the formed paper through a sizing machine to apply glue to the paper surface.
[0034] The waste filter paper recovery and reuse process firstly puts the waste filter paper into the pulper and adds water, and at the same time, hypochlorite is added, and the latex and ...
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The invention provides filter paper waste sheet recycling technology, and belongs to the field of filter paper recycling. The filter paper waste sheet recycling technology comprises following specificsteps: filter paper waste sheet is put into a pulper, water is added, and a hypochlorite is added at the same time; the pulper is turned on for crushing of an obtained mixture; a grinding machine isadopted for fine grinding of the mixture so as to obtain a fine slurry, wherein in the fine slurry fine grinding process, sodium hyposulfite is added; the fine slurry is filtered using a pressure sieve; the fine slurry is diluted; the diluted fine slurry is subjected to net drying moulding so as to obtain paper; paper obtained through moulding is delivered through a sizing applicator for gluing ofpaper. According to the filter paper waste sheet recycling technology, filter paper waste sheet and dry broke can be prepared into mid-low end filter paper for sale, so that the cost is reduced effectively.
Description
technical field [0001] The invention provides a recycling process of filter paper waste paper, which belongs to the field of filter paper reprocessing technology. Background technique [0002] In recent years, car ownership has been increasing. With the increase of the number of automobiles, the usage of automobile three filter papers (air filter paper, engine oil filter paper, fuel filter paper) is also increasing year by year. According to industry statistics, the annual consumption of domestic automobile filter paper is about 230,000 tons. [0003] In the process of producing automotive filter paper, in order to make the paper achieve excellent stiffness and carbonization resistance, it is convenient for downstream enterprises to process and end customers to use. A lot of chemical fiber and latex are added. There has not been a good way to deal with the waste paper edges of filter paper produced during rewinding and slitting of filter paper, and the dry damaged paper pr...
Claims
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IPC IPC(8): D21B1/32D21B1/34D21D1/20D21F11/00D21H23/52
CPCD21B1/32D21B1/345D21D1/20D21F11/00D21H23/52Y02W30/64
Inventor 徐汝义
Owner SHANDONG RENFENG SPECIAL MATERIALS