Emergency furnace-stop system of bagasse slurry factory black liquor alkali-recovery furnace

Abstract

An emergency furnace-stop system of a bagasse slurry factory black liquor alkali-recovery furnace includes an emergency stop control panel, an emergency furnace-stop button, an emergency water drain button, a test button, a mute button, a set of emergency furnace-stop control circuit and a set of emergency water drain control circuit, the emergency furnace-stop button, the emergency water drain button, the test button and the mute button are arranged on the emergency stop control panel, by an emergency furnace-stop control button and an emergency water drain control button, a relay control circuit is used to switch a control valve and other equipment which affect operation safety to a safe mode for emergency water drain, at the same time a sound-light alarm system is started to alert personnel within a production area to evacuate. An emergency furnace-stop procedure can be executed independently, accurately, completely and rapidly in a short time, accidents or worsen situations can be prevented, the safety of operating personnel and equipment can be protected, and loss can be minimized.

Description

technical field [0001] The invention relates to the technical field of an alkali recovery furnace for pulping black liquor, in particular to an emergency shutdown device for an alkali recovery furnace for bagasse pulp. Background technique [0002] Guangxi is the largest production base of bagasse pulp in the country, with an annual output of about 1.2 million tons of bagasse pulp. There are more than 20 factories equipped with black liquor alkali recovery furnaces in the pulping production line. Due to various reasons, their automation technology level is relatively low. The safety control device is particularly lacking in an emergency. The emergency protection operation in an emergency mainly depends on the operator to complete the control system step by step according to the regulations, or even only by manual operation. The reliability is low, and it is easy to cause misoperation. Hidden danger. As a kind of boiler, the black liquor alkali recovery furnace has molten sm...

AI Technical Summary

Problems solved by technology

[0010] However, most of the bagasse pulp alkali recovery boilers currently in operation lack special and independent emergency shutdown devices in emergency situations

In an emergency, only rely on the operator to shut down the furnace step by step on the DCS or conventional instrument panel according to the regulations. If the operation is wrong or the operation cannot be completed in time, it will cause irreparable losses.

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