CN-121976412-A - Method for rapidly removing adhesive matters of guide roller at net part

Abstract

The invention discloses a method for rapidly removing a net-part guide roller sticky matter, which comprises a pretreatment stage, a terminal protection and removal stage, a bottom network school positive roller and a bottom net tensioning roller, a guide roller anti-sticking agent, a dynamic regulation stage and a dynamic control stage, wherein the pretreatment stage is used for adding a debonder into a recovery pulp tank and a long fiber transition pulp tank, adding a sticky matter control enzyme into a discharge pulp tank to perform debonding dispersion and enzymolysis decomposition treatment on the sticky matter in the pulp, adding a guide roller anti-sticking agent into the bottom network school positive roller and the bottom net tensioning roller to remove the sticky matter attached to the surface of the bottom network school positive roller and form a protective layer, and the dynamic regulation stage is used for monitoring the sticky matter content of a scraper, the sticky matter attachment amount of the scraper and the cleanliness of the guide roller surface in real time, and adjusting the addition amount of the debonder, sticky matter control enzyme and the guide roller anti-sticking agent according to monitoring data so as to realize initial multi-stage purification and dynamic adaptation of later decrement energy conservation. The invention realizes the whole flow control of 'source viscosity reduction + terminal viscosity removal + continuous anti-sticking' through the synergistic effect and dynamic accurate regulation of the compound medicament, and obviously reduces the processing cost while improving the removal rate of the adhesive, reducing paper breakage and flaws.

Inventors

• LI GUIHUA
• LI LIMEI
• SHI SHITAO
• XIE YAOZONG
• LI FUJIN
• HOU CHAOHUI
• LI WEIGUO
• LI XIWEN
• LIU RAN
• Wen Yingguang
• LI WENHUI
• CHEN WANRU

Assignees

• 东莞建晖纸业有限公司

Dates

Publication Date

20260505

Application Date

20260129

Claims (7)

1. 1. The method for rapidly removing the adhesive of the guide roller of the net part is characterized by comprising the following steps of: S1, a pretreatment stage, namely adding a debonder into a recovery slurry tank and a long fiber transition slurry tank, and adding an adhesive control enzyme into a discharge slurry tank to perform debonding dispersion and enzymolysis decomposition treatment on the adhesive in the slurry; and S2, in the terminal protection and removal stage, a guide roller anti-sticking agent is added to the bottom network school positive roller and the bottom net tensioning roller so as to remove the adhesive attached to the surface of the guide roller anti-sticking agent and form a protective layer.
2. 2. The method according to claim 1, wherein in the step S1, the concentration of the debonder is 5-15 mg/L, the concentration of the stickies controlling enzyme is 8-20 mg/L, and the enzymolysis reaction time is 15-30 min.
3. 3. The method for rapidly removing adhesive on a web guide roller according to claim 1, wherein in the step S2, the anti-adhesive agent for the guide roller is added in a spraying manner, the spraying pressure is 0.3-0.5 mpa, and the spraying amount is 0.8-1.2 l/h per square meter of the surface of the guide roller.
4. 4. A method for rapidly removing adhesive from a wire section guide roller according to any one of claims 1 to 3, further comprising: s3, in a dynamic regulation stage, the content of the sticky matters, the adhesion amount of the sticky matters of the scraper and the cleanliness of the surface of the guide roller are monitored in real time, and the addition amounts of the debonder, the sticky matters, the enzyme and the guide roller anti-sticking agent are regulated according to the monitored data so as to realize the dynamic adaptation of primary multi-purification and later decrement energy saving.
5. 5. The method according to claim 4, wherein in the step S3, the monitoring frequency is once every 1 to 2 hours, and the adjustment range of the amount of the adhesive is 10 to 30% of the initial amount of the adhesive.
6. 6. The method according to claim 4, wherein in the step S3, an online microorganism concentration detector is used for monitoring the content of the sticky matters, and the online microorganism concentration detector is disposed in the discharge pipeline of the recycling slurry tank.
7. 7. The method according to claim 4, wherein in the step S3, the surface cleanliness of the guide roller is monitored by capturing the surfaces of the bottom net correcting roller and the bottom net tensioning roller in real time through a high-definition camera, and determining and calculating the adhesive attachment area ratio in combination with an image recognition technology.

Description

Method for rapidly removing adhesive matters of guide roller at net part Technical Field The invention relates to the technical field of cleaning of papermaking production equipment, in particular to a method for rapidly removing adhesive of a mesh-portion guide roller, which is particularly suitable for cleaning and protecting the adhesive of the mesh-portion guide roller in the production process of waste paper headbox board paper. Background In the paper making process, especially in the production of waste paper pulp board, the net part guide roller is the core part for ensuring the formation and transmission of paper. Because the waste paper pulp contains a large amount of sticky impurities (such as ink residues, colloid particles, fiber binders and the like), the sticky substances are easy to adhere and accumulate on the surface of the guide roller, and further the following problems are caused as the production is continuous, such as holes, light transmission points, wrinkles and the like on the surface of ① paper, the product qualification rate is reduced, the roughness of the surface of the ② guide roller is changed, the friction force is unbalanced, paper breakage of the paper machine is caused, the production continuity is seriously affected, and the surface of the guide roller is corroded by the ③ sticky substances after long-term adhesion, so that the equipment maintenance cost and the shutdown time are increased. The existing adhesive treatment technology mainly comprises three types, namely a chemical treatment method, a mechanical cleaning method and an enzyme treatment technology, wherein the chemical treatment method adopts a single oxidizing or non-oxidizing agent, the removal rate of the adhesive is only 40-50%, the agent dosage is fixed, the dynamic change of the adhesive content is difficult to adapt, the cost waste or the effect deficiency is easy to cause, the mechanical cleaning method can remove part of the surface adhesive through the modes of high-pressure water flushing, ultrasonic auxiliary cleaning and the like, the fineness is low, the surface of a guide roller is easy to damage, and the equipment stability is poor, and the enzyme treatment technology can reduce the adhesive viscosity, but the adhesive adhesion is difficult to thoroughly block when the adhesive is singly used, and the paper breakage risk still exists. In addition, the prior art has the common pain point of unbalanced effect and cost that if the removal rate is required to be high, the dosage of the medicament is required to be increased or the cleaning frequency is required to be increased, so that the cost is greatly increased, and if the cost is controlled, the removal effect is poor and the production requirement cannot be met. Therefore, developing a high-efficiency, low-cost and dynamically-adaptive technology for removing the adhesive of the net-section guide roller becomes a key problem to be solved urgently in the papermaking industry. Disclosure of Invention In order to overcome the technical problems, the invention discloses a method for rapidly removing adhesive of a guide roller at a net part. The technical scheme adopted by the invention for achieving the purpose is as follows: A method for rapidly removing adhesive on a guide roller of a net part, comprising the following steps: S1, a pretreatment stage, namely adding a debonder into a recovery slurry tank and a long fiber transition slurry tank, and adding an adhesive control enzyme into a discharge slurry tank to perform debonding dispersion and enzymolysis decomposition treatment on the adhesive in the slurry; And S2, in the terminal protection and removal stage, a guide roller anti-sticking agent is added to the bottom network school positive roller and the bottom net tensioning roller so as to remove the adhesive attached to the surfaces of the guide roller anti-sticking agent and form a protective layer, and the protective layer is formed on the surfaces of the bottom network school positive roller and the bottom net tensioning roller by the guide roller anti-sticking agent and is used for removing and preventing the adhesive from being attached to the surfaces of the guide roller anti-sticking agent. In the above method for rapidly removing the adhesive on the guide roller of the net part, in the step S1, the addition concentration of the debonder is 5-15 mg/L, the addition concentration of the adhesive control enzyme is 8-20 mg/L, and the enzymolysis reaction time is 15-30 min. In the above method for rapidly removing the adhesive on the guide roller of the net part, in the step S2, the anti-adhesive agent for the guide roller is added in a spraying manner, the spraying pressure is 0.3-0.5 MPa, and the spraying amount is 0.8-1.2L/h per square meter of the surface of the guide roller. The method for rapidly removing the adhesive of the guide roller of the net part comprises the following steps: s3, in a dynamic regulation stage, the conte