Tail gas afterheat recovery device for polyphosphoric acid preparation
A waste heat recovery device and technology of a recovery device, applied in the field of polyphosphoric acid, can solve the problems of low waste heat recovery efficiency and pollution of the natural environment of the exhaust gas, and achieve the effects of ensuring physical health, optimizing the structure and layout, and improving efficiency and convenience.
Inactive Publication Date: 2018-09-14
贵州开阳川东化工有限公司
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Problems solved by technology
[0005] The purpose of the present invention is to provide a tail gas waste heat recovery device for polyphosphoric acid production to solve the problems of low waste heat recovery efficiency and tail gas pollution to the natural environment in the above-mentioned background technology
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[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0018] see Figure 1-3 , The present invention provides a technical solution: a waste heat recovery device for tail gas for polyphosphoric acid production, comprising a recovery device main body 1, a waste heat heating box 2, a heating pipe 3, an air inlet pipe 4, a gas valve 5, a connection port 6, and fixing bolts 7. The support frame 8, the gas discharge pipe 9, the gas filter box 10, the filter cotton layer 11, the filter screen l...
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The invention discloses a tail gas afterheat recovery device for polyphosphoric acid preparation. The device comprises a recovery device body and a sealing box cover; an afterheat heating box is mounted on the inner side of the recovery device body; a heating pipe is fixedly mounted in the afterheat heating box; an intake pipe is mounted and connected to the left side of the heating pipe; a gas valve is mounted on the outer side of the intake pipe; a connecting port is formed in the left side of the gas valve; a fixed bolt is mounted on the outer side of the connecting port; a support frame isplaced on the right lower side of the fixed bolt; a gas exhaust pipe is placed on the right side of the support frame; a gas filter box is fixedly mounted on the right side of the gas exhaust pipe; afilter cotton layer is connected to the inner side of the gas filter box; and a filter screen layer is mounted below the filter cotton layer. The tail gas afterheat recovery device for polyphosphoricacid preparation is provided with the heating pipe and the intake pipe to optimize the overall structure layout and to reduce the dissipation speed of polyphosphoric acid preparation tail gas afterheat.
Description
technical field [0001] The invention relates to the technical field of polyphosphoric acid, in particular to a waste heat recovery device for tail gas used in the production of polyphosphoric acid. Background technique [0002] Ammonium polyphosphate, also known as ammonium polyphosphate or polycondensed ammonium phosphate, is non-toxic and tasteless, does not produce corrosive gas, has low hygroscopicity, and has high thermal stability. It is a non-halogen flame retardant with excellent performance, but there are also Corresponding shortcomings, due to the small degree of polymerization in the current process, it has greater hygroscopicity, and has a great influence on the mechanical properties of engineering plastics. Solid but easily dispersible in polyols. [0003] However, there are some big or small problems in the exhaust gas waste heat recovery device for polyphosphoric acid production currently on the market. For example, the internal structure of the exhaust gas w...
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IPC IPC(8): F27D17/00B01D46/00
CPCF27D17/004B01D46/0012F27D17/008
Inventor 郑从强
Owner 贵州开阳川东化工有限公司