QPQ Full Fiber Liquid Oxidation Furnace

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The structure of this series of electric furnaces is composed of shell, lining, heating element, gallbladder and control system.

(1) Furnace body frame: to ensure the overall strength of the furnace, frame structure flexibility, deformation and other performance.

(2) The outer wall of the furnace is welded by steel plate with a thickness of 4 mm. Side columns and rear columns are made of profiled steel, and between columns and between the top of columns are pulled by profiled steel to form a complete grid structure. It is solid, firm, durable and reliable. All welds are uniform and smooth. There are no defects such as blowhole, slag inclusion and non-fusion. The outside of the furnace is straight, beautiful and without wrinkles or bumps. Brush primer twice and finish twice according to relevant standards. The selection of color labels is in accordance with the general industry standards.

Furnace lining body: Furnace lining is full-fiber structure, using high-quality standard refractory fiber construction, using standard stainless steel round steel parts and scientific and reasonable mounting method. The fibre folding block is pre-compressed again before installation (the compression volume is more than 230 Kg/m3). The stainless steel round steel is fixed on the top shell. The thickness of insulation material is 350 mm (folding block is 300 thickness, backing insulation cotton is 50 thickness). The structure has low thermal conductivity, low thermal solubility, excellent chemical stability, thermal stability, thermal vibration resistance, excellent tensile strength and corrosion resistance. Aluminum silicate fibers have the highest temperature resistance of 1300 C, and 1Cr18Ni9Ti sheet is selected as the material for round steel parts.

The detailed features of the whole fiber lining structure are described as follows:
1 – Light specific gravity: According to the proportion of light refractory bricks used in the lining of the equipment is 800 Kg/m3, while the proportion of refractory fibers used is 200 Kg/m3 (after compression), which is only 25% of the light refractory bricks.

2 – Less heat storage loss: 1 square metre full-fiber lining has a heat storage loss of 17261.6 KJ/, while 1 square metre light-weight refractory brick wall has a loss of 453 633 KJ/, that is, the heat storage loss of full-fiber wall is only 3.8% of light-weight refractory brick wall.

3 – Small heat loss: the heat loss of 1 square metre full-fiber wall is 955 KJ /, while that of 1 square metre light-weight refractory brick wall is 1707.1 KJ /, the heat loss of all-fiber wall is 55.9% of that of light-weight refractory brick wall.

4 – Good energy saving effect: Because the heat storage loss and heat dissipation loss of the whole fiber lining are obviously lower than that of the lightweight refractory brick wall, the energy saving rate of the whole fiber lining is about 20-35% compared with the lightweight refractory brick wall by the actual measurement of many users.

5 – Long service life: All-fiber furnace wall has good thermal stability and can resist rapid heat and cold. The design of all-fiber furnace wall can not consider the influence of thermal stress. The natural service life of all-fiber furnace wall can be guaranteed more than 5 years.

6-Smart furnace structure: Because of the light proportion of all-fiber furnace wall, the furnace wall is not subject to thermal stress and external expansion force during heating and cooling, so the steel structure of the furnace body is quite light. The overall weight of the furnace body is also light.

7 – Furnace sealing is good: the whole fiber lining formed after assembling fiber blocks has large air permeability resistance, and can greatly improve the furnace temperature uniformity, save energy, prolong the service life of equipment and improve the operating environment. The insulation layer of furnace cover is 400 mm thick.

Heating elements: furnace heating elements adopt high-quality high-resistance alloy material 0Cr25Al5 resistance band. The equipment is divided into one heating area. The arrangement of heating elements corresponds to the setting of heating section. An independent heating group is arranged in each heating section. Ocr25Al5 material of_16 is selected for all lead rods. The lead rod’s wiring chuck is made of the national standard 12 mm steel wire chuck after chrome plating, which ensures the connection firm and reliable.

Furnace gallbladder: 321 produced by 10mm Taiyuan Iron and Steel Co. Isobaric leak test is carried out after argon arc welding to ensure that there is no false welding, gas leakage and other phenomena. The furnace gallbladder is placed in the furnace, and the sealing knife around the upper outer ring cooperates with the sealing groove of the furnace mouth to keep warm, so that the heat in the furnace is not distributed. Thermal insulation cotton is installed inside the furnace cover, which can better play the role of thermal insulation. The inside and outside of the furnace can be separated from each other to form a sealing body.

Slag Bar: Head Pressed by 10mm 321
Intake pipe: 316L seamless pipe is used to make a circular tube and placed at the bottom of the furnace.
Salt Temperature Sensor: A custom 316L thermocouple is placed in the furnace gallbladder.
Flue: 304 welding
Gas-Water Separator: One
The lifting mechanism of furnace cover is composed of cylinder, solenoid valve, etc.