Novel energy-saving and consumption-reducing continuous cast tube annealing furnace system

Abstract

The invention relates to the technical field of industrial furnaces, and provides a novel energy-saving and consumption-reducing continuous cast tube annealing furnace system. The novel energy-savingand consumption-reducing continuous cast tube annealing furnace system comprises a furnace body, a combustion system, a coal gas filtering system and a spraying system; the combustion system is arranged in the front of the furnace body, the front part of the combustion system is provided with a heating section, and the rear part of the combustion system is provided with a heat-preservation section; the combustion system comprises a preheating circulation pipeline and a plurality of burners arranged on the preheating circulation pipeline;. the preheating circulation pipeline is arranged on thefurnace wall of the furnace body, a regenerative burner is adopted as the burner at the heating section, and a common burner is adopted as the burner at the heat-preservation section; the gas filtering system comprises a gas filtering system pipeline and a plurality of coke oven gas filters arranged on the gas filtering system pipeline; the output end of the gas filtering system pipeline is connected with the combustion system; and the multiple coke oven gas filters are arranged in parallel. Waste heat of the combustion system can be secondarily utilized, and energy conservation and consumption reduction are achieved; the spraying system can achieve rapid cooling of a discharged cast pipe, and the quality of the cast pipe is improved.

Description

technical field [0001] The invention relates to the technical field of industrial furnaces, in particular to a novel energy-saving and consumption-reducing continuous casting tube annealing furnace system. Background technique [0002] The water-cooled cast tube annealing furnace is used for the annealing of cast iron tube spheroidization. Spheroidizing annealing of ductile iron pipe is to anneal the pipe through heating, heat preservation and rapid cooling to eliminate the cementite and pearlite formed in the casting process of the pipe, and transform the matrix into ferrite ductile iron pipe matrix structure. The function of the heating section is to heat the pipe fittings to the temperature required by the process within a certain period of time, enter the heat preservation section, and keep it in a stable temperature range for a certain period of time to complete the transformation from cementite to ferrite in the metallographic structure. Then enter the rapid cooling s...

AI Technical Summary

Problems solved by technology

[0003] The current combustion control system has the following problems: 1. The heating capacity of the furnace is unstable, resulting in unstable temperature uniformity in the furnace

2. There are certain difficulties in the adjustment of the furnace temperature, so that the combustion heat of the fuel cannot be fully utilized, which virtually prolongs the time for raising the furnace temperature, consumes a lot of fuel, and makes the production face huge energy consumption and serious environmental pollution.

3. Due to modernized production, the rhythm is accelerated, and the production space is limited. The length of the cooling chain behind the furnace cannot be lengthened at will, resulting in less cooling time and short cooling distance.