Pulping process of waste paper deinking pulp for furnishing high-grade printing paper
A technology for deinking pulp and printing paper of waste paper, which is applied in processing waste paper, pulp bleaching, papermaking, etc. It can solve the problems that the degree of control of stickies cannot reach high-grade paper products, reduce the operating performance of paper machines and product quality, etc. , to achieve the effect of reducing the consumption of forest resources, protecting the environment and saving resources
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Embodiment 1
[0034] 35% #37 office waste paper, 45% #8 old newspaper, 20% #10 old magazine paper 1500 kg of waste paper are sorted and sent to the high consistency hydraulic pulper through the chain conveyor, after pulping, High-concentration sand removal, coarse screening, medium-concentration sand removal, fine screening, flotation, concentration, heat dispersion, bleaching, backwater and sticky matter treatment, the waste paper can be deinked pulp after the above processes.
[0035] The pulping process is as follows: the waste paper and water are placed in a high-consistency hydraulic pulper, and 1.8% of deinking agent and 0.1% of compound biological enzyme are added to the high-consistency hydraulic pulper relative to the dry weight of waste paper. and 1.0% surfactant, the deinking agent is a combination of sodium dodecylbenzenesulfonate and sodium dodecyl sulfate; the compound biological enzyme is composed of 50% cellulase and 50% lipase; surface activity The non-ionic surfactant is a...
Embodiment 2
[0048] 65% #37 office waste paper, 5% #8 old newspaper, 30% #10 old magazine paper 1500 kg of waste paper are sorted and sent to the high consistency hydraulic pulper through the chain conveyor, after pulping, High-concentration sand removal, coarse screening, medium-concentration sand removal, fine screening, flotation, concentration, heat dispersion, bleaching, backwater and sticky matter treatment, the waste paper can be deinked pulp after the above processes.
[0049] The pulping process is as follows: waste paper and water are placed in a high-consistency hydraulic pulper, and 0.1% of deinking agent and 0.8% of compound biological enzyme are added to the high-consistency hydraulic pulper relative to the dry weight of waste paper. and 2% surfactant, the deinking agent is a combination of sorbitan methyl stearate and polyoxyethylene sorbitan methyl stearate; the compound biological enzyme is composed of 50% cellulase and 50% The composition of lipase; the surfactant is an a...
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