Efficient oxygen-enriched-combustion multiple-unit-powder heat transfer oil boiler system

Abstract

The invention relates to an efficient oxygen-enriched-combustion multiple-unit-powder heat transfer oil boiler system, and belongs to the technical field of heat transfer oil equipment. The efficient oxygen-enriched-combustion multiple-unit-powder heat transfer oil boiler system comprises an air inlet system, a burner and a boiler body, wherein the boiler body comprises a combustion chamber as well as a radiation heat-exchange surface and a convection heat-exchange surface, which adopt exhaust pipe structures, and are arranged in series on the outer wall of the combustion chamber; the burner is communicated with the combustion chamber; the air inlet system comprises a primary air inlet device, a secondary air inlet device and a tertiary air inlet device; the primary air inlet device and the secondary air inlet device are both connected to the burner; the primary air inlet device is put in from the middle part of the burner; the secondary air inlet device is put in from bottom of the burner; and the tertiary air inlet device is arranged in the middle of the side wall of the combustion chamber and used for directly supplying wind for the combustion chamber. The efficient oxygen-enriched-combustion multiple-unit-powder heat transfer oil boiler provided by the invention has the advantages of high automatic degree, high heat efficiency and the like.

Description

technical field [0001] The invention relates to a high-efficiency oxygen-enriched combustion multi-component heat-conducting oil boiler system, which belongs to the technical field of heat-conducting oil equipment. Background technique [0002] The heat-conducting oil boiler is a once-through special boiler developed based on the design thinking of forced circulation. Due to the closed-cycle heating and low-pressure operation, the service life of the boiler can be extended, the heat energy is transported in the liquid phase, the heat loss is small, and the energy-saving effect is more significant. The environmental protection effect is good, so it is widely used in petroleum, chemical, pharmaceutical, textile printing and dyeing, light industry, building materials, food, road construction asphalt heating and other industrial fields that require high temperature. Most of the existing heat-conducting oil boilers are ordinary chain, pulverized coal or fuel oil (gas) boilers, wh...

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Problems solved by technology

Most of the existing heat-conducting oil boilers are ordinary chain, pulverized coal or fuel oil (gas) boilers, which generally have unreasonable design of the heating surface structure, small layout of the furnace heating surface, high local heat load of the boiler, and high exhaust gas temperature at the boiler tail , the exhaust heat loss is large, and the thermal efficiency of boilers is generally low; the requirements for coal types are high, the regional characteristics are obvious, and the coal types are single. The coal types are Shenmu and Fugu three types of high-quality bituminous coal

It is difficult to form a stable fuel supply, the adaptability of coal is poor, and only high-quality coal can be used; the structural design of the burner is defective, it is easy to form coking, the nitrogen compound is not easy to control, and the overall combustion system has serious slagging and coking. The structure of the boiler body is directly applied to the fuel oil and gas boiler structure, which is not conducive to the timely removal of ash and slag, which affects the long-term, safe and effective operation of the boiler. The adaptability of load adjustment is poor, usually the operating load is greater than 70%, and quality accidents such as unstable combustion, increased carbon content in ash, and deflagration in the furnace are prone to occur; the burnout rate of pulverized coal is poor, and the carbon content in ash sometimes Up to 3000 kcal / kg; the diameter and length of the flame cannot be adjusted, the matching with the boiler is poor, the level of automatic control of the boiler is not high, the operation adjustment is difficult, and the labor intensity of the fireman is too high

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