50,000 ton/year natural gas hard carbon black reaction furnace

Abstract

The invention relates to a 50,000 ton/year natural gas hard carbon black reaction furnace, one end of an air guide cylinder is connected with a panel of the reaction furnace, the other end of the airguide cylinder is connected with a combustion section, a ventilation opening is reserved on the joint of the air guide cylinder and the combustion section to form bypass air, a preheated air intake tube I is arranged on the middle section of an air distributor, and the preheated air of the preheated air intake tube I respectively forms a ventilation air path with the air guide cylinder and the ventilation opening respectively. The 50,000 ton/year natural gas hard carbon black reaction furnace has the technical effects that: the air distributor is designed and improved and is butted with a combustion straight section to form the bypass air, the inner wall of a hearth is protected, the air temperature and the furnace temperature are improved on the premise that the reaction furnace is effectively protected, two tangential air inlets are arranged at the end part of the air guide cylinder, the rotational flow is formed in the air guide cylinder, the turbulence degree of the preheated air is increased, so that the combustion is promoted, the reaction temperature of raw oil is increased, meanwhile, the coefficient of excess air is further reduced, the content of excess oxygen in the smoke produced in the combustion is reduced, and the consumption of the raw oil is reduced.

Description

Technical field [0001] The invention relates to a carbon black reaction furnace, in particular to a 50,000 tons / year natural gas hard carbon black reaction furnace. Background technique [0002] China has a vast territory and uneven distribution of energy. In order to save transportation and operating costs, carbon black production companies should give priority to building plants close to the raw oil production sites. Due to geographic regions, if the local oil purchases are of poor quality and high asphalt content, The high level of insoluble matter will affect the yield of coal tar and the quality of carbon black to a certain extent, leading to higher consumption of raw oil, lower capacity of carbon black production equipment, and due to the unreasonable structure of the existing carbon black reactor. The temperature in the high temperature zone in the center of the reaction furnace is not easy to control, resulting in unstable carbon black formation reaction and unsatisfactor...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a 50,000 tons / year hard carbon black reaction furnace, which solves the following technical problems: 1. The furnace temperature cannot be set too high, and high furnace temperature will easily cause the inner wall of the furnace to be not resistant to erosion and burn out the reaction furnace ; 2. The air preheating temperature cannot be set too high. When the reaction furnace cannot withstand a higher furnace temperature, the excess air coefficient must be increased to control the furnace temperature, resulting in a large amount of excess oxygen, which affects the yield of carbon black products; 3. The current reaction Due to the combustion mode adopted by the furnace, the temperature in the area near the furnace wall in the reaction furnace is higher than the design, and the temperature in the central area of ​​the furnace is lower than expected. Product quality and unit carbon black product fuel consumption

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