Reverse burning type normal-pressure superheated steam furnace

Abstract

The invention relates to a reverse burning type normal-pressure superheated steam furnace. The reverse burning type normal-pressure superheated steam furnace comprises a furnace seat and a furnace body mounted on the furnace seat, wherein a hearth is arranged in the furnace body, and water-clamping layers are arranged on the two side hearth walls of the hearth; a steam generator is arranged at theupper part of the hearth; and a secondary combustion chamber is arranged on one side of the hearth; and the lower part of the secondary combustion chamber communicates with the hearth through a flamehole, a primary oxygen inlet is formed in the hearth, and a secondary oxygen inlet is formed in the secondary combustion chamber. By utilizing a reverse burning type secondary combustion technique, adequate combustion of fuels is realized, so that the thermal conversion efficiency is improved, and black smoke is eliminated; water is taken as a heating medium, heat exchange is carried out by virtue of heat and thermal radiation generated by a primary combustion chamber and the secondary combustion chamber of the steam generation furnace so as to generate saturated steam, the saturated steam iscontinuously heated by virtue of heat of high-temperature fume, and then superheated stream at the temperature higher than 135 DEG C is generated at a pressure lower than 0.1MPa.

Description

technical field [0001] The invention relates to the technical field of steam generators, in particular to a counter-burning atmospheric pressure superheated steam furnace. Background technique [0002] A steam boiler refers to an industrial boiler that heats water to a certain parameter and produces superheated steam. The water is heated in the drum to become steam, and the fire emits heat in the furnace, which is the principle of the steam boiler. According to the fuel, steam boilers can be divided into electric steam boilers, oil-fired steam boilers, gas-fired steam boilers, etc. According to my country's current "Boiler Safety Technology Supervision Regulations", steam boilers with a steam pressure greater than or equal to 0.1Mpa are special equipment. The design, processing, manufacture, installation and use of this type of steam boiler must be supervised by the technical supervision department. Users The steam boiler can only be used if the boiler certificate is obtaine...

AI Technical Summary

Problems solved by technology

[0006] 1) There is a combustion chamber at the front end of the tunnel-type fire channel, and the end is connected with the chimney. The flame and high-temperature flue gas generated by the combustion run through the bottom of the entire steam generation tank under the action of self-absorption of the chimney. The long fire tunnel causes damage to the yuba. The heating of the forming tank is not uniform, which causes the temperature difference of the bean curd stick forming tank to be too large. When the temperature is too high, the bottom of the forming tank will be sticky and burnt; Yield and quality of yuba

[0007] 2) Due to the large flame and high temperature of the high-temperature flue gas at the front end of the tunnel-type fire channel, the front end of the steam generating tank is locally heated, which is easy to cause deformation and affect the service life

[0008] 3) The fuel in the tunnel-type flue is not fully burned, and black smoke is emitted, which is self-absorbed and discharged directly into the atmosphere through the tall chimney, causing pollution to the environment; the fuel heat conversion efficiency is low, the fuel loss is large, and the use cost is high

The flue gas treatment device supporting the pressurized steam boiler has a large investment and high operating cost

[0011] 2) The pressurized steam boiler is a special equipment, and the operators must pass the special training and work with a certificate

[0012] 3) Potential safety hazards are likely to occur during the use of pressure-bearing steam boilers. If the operation and use of the equipment are not strictly followed and the maintenance of the equipment is not in place, safety accidents are likely to occur, resulting in equipment damage and personal injury

The flue gas treatment device supporting the atmospheric pressure steam generator has a large investment and high operating cost

[0015] 2) The saturated steam generated by the atmospheric pressure steam generator enters the steam tank through the steam pipe and evenly disperses into the cavity, and performs heat exchange with the bean curd stick forming tank. After the saturated steam enters the steam tank, the steam space expands, the pressure drops, and the After the heat exchange, the temperature of the steam in the steam tank drops, the temperature of the steam in the tank is lower than the condensation temperature of the steam, and condensed water is generated, the heat utilization efficiency of the steam is low, and it is difficult to meet the normal working temperature required for the bean curd stick forming; in order to meet the bean curd stick forming The required normal working temperature requires the input of a large amount of saturated steam for supplementary heating, resulting in a large amount of steam usage, high energy consumption, and high production costs

However, the use of atmospheric pressure steam boilers to provide steam cooking has the disadvantages of high energy consumption for pulp cooking and heating, low forming efficiency of bean curd sticks and low output of high-quality bean curd sticks

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