Pulping low-concentration slag removal system

Abstract

The invention discloses a pulping low-concentration slag removal system which comprises three sections of low-concentration slag removers, low-concentration slag removal pulp feeding pumps, a first-section low-concentration slag removal white water pool, a second-section low-concentration slag removal white water pool and a muddy white water pool which replenishes water to the first-section low-concentration slag removal white water pool and the second-section low-concentration slag removal white water pool. The first-section low-concentration slag removal white water pool and the second-section low-concentration slag removal white water pool are arranged on the second floor. Embedded parts are reversed on the first-section low-concentration slag removal white water pool and the second-section low-concentration slag removal white water pool. U-steel is welded to support the low-concentration slag removers. The low-concentration slag removal pulp feeding pumps are arranged beside the first-section low-concentration slag removal white water pool and the second-section low-concentration slag removal white water pool. According to the pulping low-concentration slag removal system, due to the optimized layout, the lift of the low-concentration slag removal pulp feeding pumps is effectively reduced, and the abrasion of pipelines in the production process is reduced. Therefore, the production investment is saved, and the operating cost is reduced.

Description

technical field [0001] The technology of the invention belongs to the field of pulping, and in particular relates to a system that can provide low-concentration slag removal for a pulping system. Background technique [0002] With the rapid development of the paper industry, the shortage of paper raw materials is becoming more and more obvious. Various waste paper and low-quality wood are also used for pulping. There are more sand, coal ash and other granular impurities in the raw materials. Disposal of slag in pulp will affect paper quality and cause damage to pipelines and equipment. [0003] In the traditional low-consistency slag removal system, the first-stage slag removal pump, the second-stage low-consistency slag removal pump and the third-stage slag removal pump are arranged on the first floor. The slag is fed into the inlet pipe of the slurry pump and sent to the first-stage low-consistency slag remover. The first-stage tailings and the third-stage good pulp are i...

AI Technical Summary

Problems solved by technology

[0004] The shortcomings of the traditional low-consistency slag removal system are obvious: the first-stage slag removal pump, the second-stage low-consistency slag removal pump and the third-stage slag removal pump are arranged on the first floor, which increases the head of the pump and thus increases the investment. Expenses and operating costs; the incoming slurry from the coarse screen enters the first-stage slag removal pump from the second floor, and the first and second stage tailings enter the second-stage low-concentration slag removal pump and the third-stage slag removal pump from the second floor When sending to the second floor, on the one hand, the length of the pipeline is increased, and on the other hand, the wear and tear of the pipeline is increased, which increases maintenance costs and difficulty in overhaul

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