KR950007717B1 - Wire and belt for paper detergent - Google Patents

Abstract

The detergent containing compound I(R1 is C8-9 alkyl group, n is 6-15), compound II(R2 is C11-21 alkyl group, R3 and R4 are C1-4 alkyl group) and mineral oil was prepared. Thus, 10 parts of I(R1= C8, n=8), 20 parts of II (R2= C17, R3, R4= C1) and 70 parts of mineral oil(spgr=0.88 at 15/4 degree C, dynamic viscosity 6.86/40 degree C) were stirred to give the detergent.

Description

Paper wire and felt cleaner

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a cleaning agent used for the production of newspapers, magazines, and the like, and for the production of offset paper, copy paper, and the like, and in particular for the removal of deposits on the wires and felts of the counterpart.

The problem of deposits in the papermaking process, especially in wire and felt sections, has become a problem that needs to be solved when the paper mill is in operation. Sources of such deposits include resin components contained in raw pulp, inks in recycled pulp, composites with adhesives, colorants and pigments, and various organic and inorganic chemicals added during the process. It has been compounded to form contaminants and adheres to paper, wire and felt, which has been a factor in reducing paper quality and productivity.

In addition, as the use of recycled pulp has increased in recent years for the purpose of solving environmental pollution problems and recycling resources, the problem of deposits has become more serious.

In order to remove such deposits, conventionally, inorganic substances such as talc and alarms, anionic dispersants, benzene, toluene, xylene and chlorine solvents have been used as cleaning agents.

However, the use of such substances is increasingly difficult and regulated due to problems such as limitations in expression effects and human hazards, fire hazards, and environmental pollution.

For this reason, it is difficult to obtain effective results in terms of production of high quality products, productivity improvement, and human body, fire, environment, etc., which have been conventionally used.

The present invention is to solve the problems of the prior art as described above, by improving the paper quality and productivity by effectively removing the contaminants attached to the wire and felt and paper when the wire and felt in the paper product manufacturing process continuously It aims to prevent environmental pollution and to provide a cleaner that is harmless to the human body.

In order to achieve the above object, the present invention is a cleaning agent used in the continuous cleaning of the wire and felt of the papermaking process, especially the agitated portion, which is excellent in the removal effect of the three components of the following formula (1), (2), (3) To provide.

[Formula 1]

(Wherein, R ₁ : an alkyl group having 8 or 9 carbon atoms and an integer of n: 6-15)

[Formula 2]

(In the formula, R ₂ : an alkyl group having 11 to 21 carbon atoms, R ₃ , R ₄ : an alkyl group having 1 to 4 carbon atoms.)

In the present invention, the component of the polyoxyethylene alkylphenyl ether represented by the general formula (1) (A), the component of the fatty acid amide represented by the general formula (2) (B), and the component of the mineral oil represented by (3) ( When using C), the mixing ratio of each component (A), (B), and (C) is expressed by weight ratio, and (A): (B): (C) = 10 ~ 30: 15 ~ 30: 60 ~ It is preferable that it is 75.

The present invention is described in detail as follows.

The compound represented by the general formula (1) exhibits an excellent effect of infiltrating the cleaning liquid with wire and felt and dispersing the deposit in water.

The compound represented by the general formula (2) exhibits an excellent effect in controlling inorganic matters such as the scale in the process equipment, and also functions to suppress the growth of microorganisms.

The compound shown in (3) shows an excellent effect in dissolving the organic deposit.

When the materials of (1), (2), and (3) were mixed and used at an appropriate ratio, they showed a remarkable cleaning effect, and the mixed use ratio was expressed by weight ratio (A): (B): (C) = 10 ~ 30: 15-30: 60-75.

In the mixed use ratio of the above components, if (A) is less than 10% by weight, it is difficult to exhibit satisfactory penetration and dispersing force, and when it is more than 30% by weight, excessive bubble amount causes paper quality and process problems. In other words, it causes the adverse effects on the post-process and wastewater treatment plants due to the bubbles in the production area and the bubbles contained in the white water and the waste water due to the generated bubbles. If (B) is less than 15% by weight, the contaminant control power is lowered, and if (B) is more than 30% by weight, the amount of (A) and (C) is relatively affected, resulting in poor cleaning ability.

And if (C) is less than 60% by weight, the adhesion dissolution effect is lowered, if more than 75% by weight affects the amount of (A) and (B) usage does not exhibit excellent cleaning power.

In the above-mentioned (A), (B), (C) mixed use ratio, especially when it is a weight ratio (A) :( B) :( C) = 12-18: 17-25: 64-70, it shows the outstanding effect. [(A), (B), (C) represents each component of the said general formula (1), (2), (3) compound.]

The cleaning agent of the present invention can be applied to all papermaking processes for treating regenerated pulses or natural pulp, in particular, wires and felts of the countertop part, and the amount of use is excellent when the amount is 0.2 to 0.8% by weight relative to the treated pulp.

In particular, when 0.3 to 0.6% by weight is used, it shows an excellent cleaning effect. If the amount of the cleaning agent is less than 0.2% by weight based on the treated pulp, the cleaning effect may be reduced, and if the amount of the cleaning agent is more than 0.8% by weight, it may cause process problems due to the excessive amount of bubbles and also increase the amount of the cleaning solution. The burden of cost increases and the synergistic effect of the cleaning effect is insignificant.

Next, preferred examples of the present invention and comparative examples that can demonstrate the effects of the present invention are described.

[Examples 1 to 7 and Comparative Examples 1 to 9]

(A), (B) and (C) components shown in Table 1 below were put into a 1,000 ml container and stirred to prepare a detergent. The obtained detergent was tested for performance according to Experimental Examples 1) to 4) below, and the results are also shown in Table 1 below.

[Comparative Examples 10 to 11]

The performance was tested according to Experimental Examples 1) to 4) below using commercially available cleaning agents shown in Table 1 below. The results obtained are also shown in Table 1 below.

Example 8 Microbial Color Suppression

The wire and felt cleaning agent of the papermaking process annealing unit having a daily production capacity of 450 tons of recycled pulp was added and used at 600 ml / min of A and B companies, and then the 800-ml / min cleaning agent of the present invention prepared in Example 3 was started. After 3 days, the slime accumulated in the detergent dilution water pipe was discharged. However, slime discharge lasted for three days and then ceased. In other words, microbial growth is suppressed when using the present invention, slime formation is reduced or stopped, and thus paper products and process problems caused by slime are reduced or solved.

Experimental Example 1 Penetration Force Experiment

250 ml of 250 ml beakers were prepared by warming the cleaning solution diluted to 1.0% by volume with water, and preparing square felt specimens of 1 cm each in width and length, and dropping lightly on the liquid surface of the cleaning solution in the beaker. Measure the time until the specimen sinks to the bottom of the beaker.

Experimental Example 2 Attachment Underwater Dispersion Test

In a 500 ml polyethylene bottle, add 10,000 ppm of pseudo-pitch and 1,000 ppm of detergent, and add 200 g of water of known hardness. At this time, the weight of the polyethylene empty bottle is measured and recorded in advance.

The polyethylene bottle was put in a 40 ° C constant temperature water bath (Prothermo shaker, NTS-221, manufactured by EYELA), stirred at 120 rpm for 10 minutes, discarded the contents of the polyethylene bottle, dried in an oven, and then attached to the polyethylene bottle. Measure In this experiment, the linseed oil composed of unsaturated fatty acid was used as pseudo pitch, and the hardness of the water was adjusted to 600 ppm using calcium chloride (CaCl ₂ ).

Experimental Example 3 Attachment Dissolution and Removal Force Experiment

A circular felt specimen having a diameter of 55 mm was prepared, and the evaporation material contained in the felt was sufficiently removed in an oven, and left to stand at room temperature until a constant weight was obtained. The felt specimen was measured by air permeability (Parker Print-Surf 78, Messmer). Manufactured) to measure the air permeability before cleaning. 250 ml of the detergent stock solution is taken in a 500 ml polyethylene bottle, and then the felt specimen is placed in a polyethylene bottle. Using a thermostatic bath (Prothermo Shaker, NTS-221, manufactured by EYELA), shake the polyethylene bottle under the conditions of 40 ° C and 120rpm for 1 hour to clean the contaminants contained in the felt specimen, and lightly wash the washed felt specimen with running water. After removing the contaminants separated from the specimens, the felt specimens are sufficiently dried in an oven and left to dry at room temperature. After measuring the air permeability of the felt specimens in the same manner as measuring the air permeability before cleaning, and compared with the air permeability of the felt specimen before cleaning.

Experimental Example 4 Bubble Force Experiment

Warm up the diluted solution (0.1% by volume) to 400 ° C, take 30ml in a 100ml measuring cylinder, seal the opening of the measuring cylinder, shake it up and down fifteen times, and measure the height of the bubble layer generated in the measuring cylinder.

TABLE 1

Note 1) A) Product: Solvent type cleaner mainly containing tetrachloroethylene (Cl ₂ C = CCl ₂ )

2) B) Products: solvent type cleaner mainly composed of trichloroethylene (Cl ₂ CH = CCl ₂ )

3) Unit of Kinematic Viscosity: CSt

4) The air permeability value indicates the increase and decrease of air permeability before and after washing.

5) Foaming force may vary depending on the field process, but 4.0 ~ 5.0 is appropriate.

In the results of Table 1, the penetration time is shorter measurement time, the adhesion force in water dispersing force is less the amount of the deposit, the greater the air permeability of the adhesive dissolution and removal, the greater the detergent performance. In view of the results of the above examples and comparative examples, it can be seen that the cleaning composition according to the present invention has an excellent effect on inhibiting microbial growth as well as excellent cleaning ability for the deposit.

Claims (6)

The cleaning composition which consists of three components represented by following formula (1), (2), (3). (Wherein, R ₁ : an alkyl group having 8 or 9 carbon atoms and an integer of n: 6-15) (In the formula, R ₂ : an alkyl group having 11 to 21 carbon atoms, R ₃ , R ₄ : an alkyl group having 1 to 4 carbon atoms.) The cleaning composition according to claim 1, wherein the ratio of the two components is (1) :( 2) :( 3) = 10-30: 15-30: 60-75 by weight ratio. The detergent composition according to claim 2, wherein the ratio of the three components is (1) :( 2) :( 3) = 12-18: 17-15: 64-70 by weight ratio. Use of the detergent composition as defined in claim 1 in papermaking wire and felt cleaning. A method for cleaning paper wire and felt using the cleaning agent defined in claim 1 in an amount of 0.2 to 0.8% by weight relative to the pulp to be treated. The cleaning paper composition for papermaking and felt using the compound of General formula (2) of Claim 1.