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A kind of mixed solid dye and its application

A dyestuff and solid technology, applied in the field of mixed solid dyestuffs, can solve the problems of lack of dyestuffs and high tinting cost, and achieve the effect of obvious effect, reducing paper tinting cost and improving utilization rate

Active Publication Date: 2019-01-01
SHANGHAI EMPEROR OF CLEANING HI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual production process, the traditional coloring process usually uses three liquid dyes of blue, red and yellow to color the pulp, and the cost of coloring remains high. There is a lack of relevant coloring agents for the treatment of solid waste

Method used

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  • A kind of mixed solid dye and its application
  • A kind of mixed solid dye and its application
  • A kind of mixed solid dye and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-5

[0025] According to the target value of the paper color of the customer's pattern: L*=60.5±1.0, a*=8.0±0.5, b*=21.0±0.5, as the target of tinting, pulp dyeing is carried out according to the following steps:

[0026] (1) Prepare a uniformly dispersed pulp and paper waste slurry;

[0027] (2) adding mixed solid dyes into water for brewing, making mixed solid dye brewing liquid;

[0028] (3) Add dry strength agent, mixed solid dye brewing liquid, cationic starch, alkyl ketene dimer, aluminum sulfate and retention aid in sequence to the slurry, stir and disperse evenly;

[0029] (4) Squeeze, dry and shape the mixed slurry to obtain a paper-like product.

[0030] Above, the slurry concentration is about 3-4wt%, the dry strength agent addition is 3kg / t slurry, the solid mixed dye is added according to the formula in Table 1, the addition is 3kg / t, and the cationic starch addition is 10kg / t; The addition amount of ketene dimer is 8kg / t, the addition amount of aluminum sulfate is 5...

Embodiment 6

[0036] In this embodiment, the face paper and core paper of corrugated paper are produced, using the No. 4 paper machine and the No. 9 paper machine of a paper mill in Riau, Indonesia, and the No. 13 paper machine of a paper mill in Jakarta;

[0037] Capacity: 80-120T / day;

[0038] Paper machine speed: 200-255m / min;

[0039] Paper machine raw materials: waste paper boxes and leftovers, waste paper core tube leftovers, recovered paper, papermaking wastewater treatment sludge, various waste paper;

[0040] Papermaking process: Fourdrinier wire forming, ordinary mechanical pressing (two nips), double row drying cylinder drying;

[0041] Chemicals: dry strength agent, alkyl ketene dimer, starch, aluminum sulfate, etc.;

[0042] Dye ratio: Black G 7.2%, Brown RN 27.3%, Yellow R 65.5%.

[0043] The specific steps are the same as the steps in Examples 1-5, the amount of solid mixed dye added is added according to Table 2, and the paper color results of the standard sample and the ...

Embodiment 7-9

[0048] Embodiment 7-9 According to the different formulations and reagent additions adopted by different customers, pulp dyeing is carried out according to the following steps:

[0049] (1) Prepare a uniformly dispersed pulp and paper waste slurry with a slurry concentration of about 3-4wt%;

[0050] (2) adding mixed solid dyes into water for brewing, making mixed solid dye brewing liquid;

[0051] (3) Add dry strength agent, mixed solid dye brewing liquid, cationic starch, alkyl ketene dimer, aluminum sulfate and retention aid in sequence to the slurry, stir and disperse evenly;

[0052] (4) Squeeze, dry and shape the mixed slurry to obtain a paper-like product.

[0053] Table 3 is the mixed solid dye formula, and Table 4 is the amount of reagents added during dyeing.

[0054] Table 3 embodiment 7-9 mixed solid dye formula

[0055]

[0056] The amount of reagent added in table 4 embodiment 7-9 dyeing use

[0057]

[0058]After testing, the paper color prepare...

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Abstract

The invention relates to a mixed solid dye and application thereof to production of dyed pattern product by utilization of pulping and papermaking waste. The mixed solid dye is mainly formed by mixing Brown RN, Black G and Yellow R, wherein Brown RN is direct red brown RN, and accounts for 27-36 wt%, Black G is direct black 19, and accounts for 6-10 wt%, and Yellow R is direct yellow 11, and accounts for 55-65 wt%. Compared with the prior art, a proper mixed dye is provided for production of a pattern meeting use requirements by utilizing the papermaking waste, the utilization rate of the solid waste by a pulping and papermaking enterprise is improved, three basic dyes of yellow, brown and black are adopted for blending, a proper formula is developed, the treatment effect on the solid dye with darker color is obvious, and through adoption of the mixed dye, the paper color modulation cost is reduced, and the market competitiveness of the paper product is improved.

Description

technical field [0001] The invention relates to a mixed solid dye, in particular to a mixed solid dye and its application in producing dyed paper sample products from pulp and paper waste. Background technique [0002] As we all know, a large amount of solid waste will be produced in the process of pulping and papermaking. With the expansion of the industrial scale, the environmental impact brought by these solid wastes has become increasingly prominent, and various ecological and social problems have also gradually followed. stand out. The solid wastes in the pulping and papermaking process mainly include raw material preparation wastes from virgin pulp production, white mud from alkali recovery workshops, pulping wastes, waste water treatment sludges, screening wastes generated during the utilization of secondary fibers, and papermaking and post-production wastes. Leftovers during processing. Some of these wastes are used in power boilers and alkali recovery boilers for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H27/00D21B1/32D21H17/06D21H17/29D21H17/55D21H17/66D21H21/18D21H21/28
CPCD21B1/32D21H17/06D21H17/29D21H17/55D21H17/66D21H21/18D21H21/28D21H27/00Y02W30/64
Inventor 王炜
Owner SHANGHAI EMPEROR OF CLEANING HI TECH
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