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Voltage stabilization-continuous pneumatic conveying feeding system for biomass thermal cracking

A biomass pyrolysis and pneumatic conveying technology, which is applied in the direction of conveying bulk materials, conveyors, transportation and packaging, etc., can solve the problems of uneven conveying, blockage, instability, etc., and achieve controllable feeding process and avoid racking bridge, avoid labor effect

Active Publication Date: 2019-02-05
BEIJING FORESTRY UNIVERSITY
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Problems solved by technology

[0006] The object of the present invention proposes a kind of constant pressure-continuous pneumatic conveying feed system that is used for biomass pyrolysis, to solve the wall hanging, bridging, rat hole, feeding unevenness, non-uniformity that exist in the current biomass feeder Stability and other problems, as well as the blocking problem caused by high-temperature carbonization accumulation in the transportation process, realize continuous, uniform, discrete and stable transportation of biomass powder into the reactor

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  • Voltage stabilization-continuous pneumatic conveying feeding system for biomass thermal cracking

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Embodiment Construction

[0019] The steady pressure-continuous pneumatic conveying feeding system that the present invention proposes is used for biomass pyrolysis, and its structure is as follows figure 1 As shown, it includes a storage hopper 1 , a material transition bin 3 , a conical pressure bin 6 and a material receiving chamber 14 . The storage hopper 1, the material transition chamber 3 and the conical pressure chamber 6 are coaxially installed from top to bottom, and the first-stage electric butterfly valve 2 is installed between the storage hopper 1 and the material transition chamber 3 through the flange, the material transition chamber 3 and the conical pressure chamber. Two-stage electric butterfly valves 5 are installed between the warehouses 6 through flanges. A pair of primary laser-photosensitive sensors 9 and a pair of secondary laser-photosensitive sensors 10 are installed on the warehouse wall of the material transition warehouse 3 , and a pressure maintaining pipe 4 is provided on...

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Abstract

The invention relates to a voltage stabilization-continuous pneumatic conveying feeding system for biomass thermal cracking, and belongs to the technical field of biomass thermal cracking. The voltagestabilization-continuous pneumatic conveying feeding system comprises a material transition bin, a conical pressure bin, a material receiving chamber and the like. A dual-material bin and a double butterfly valve design are adopted by the feeding system, so that the effects of pressure isolation, air locking and environment sealing are achieved, the feeding process is controllable, the phenomenonthat materials are reversely sprayed is avoided, and the reliability and the stability of the thermal cracking process are improved. A laser-photosensitive sensor and a PLC are used as an automatic control system, a two-stage electric butterfly valve is adopted as an execution component, and the materials automatically fall into the conical pressure bin from the material transition bin. Aerationair is added into the conical section of the conical pressure bin, and the materials in the conical pressure bin are fluidized, so that the phenomena of bridging, wall hanging and material bursting are avoided. Thermal cracking by-product non-condensable gas generated by biomass rapid thermal cracking which serves as spraying, pressurization and pressure maintaining gas is adopted by the feeding system, so that resources can be saved, self-powered energy is achieved, and pollution is avoided.

Description

technical field [0001] The invention relates to a constant pressure-continuous pneumatic conveying and feeding system for biomass thermal cracking, belonging to the technical field of biomass thermal cracking. Background technique [0002] As a clean, pollution-free and renewable new energy, biomass energy has attracted more and more attention. Rapid pyrolysis technology is one of the important technologies for the conversion and utilization of biomass energy. Due to the characteristics of seasonality, dispersion and regionality of biomass, centralized pyrolysis after collection will not only take time and effort, but also increase the cost of pyrolysis, which is not conducive to the low-cost and full utilization of biomass energy. Therefore, mobile biomass thermal The research on cracking equipment has gradually developed, and it has become an important method for in-situ conversion of biomass and reduction of raw material transportation costs. [0003] The feed system is ...

Claims

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Application Information

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IPC IPC(8): B65G53/36B65G53/40B65G53/16
CPCB65G53/16B65G53/36B65G53/40
Inventor 司慧李萍常建民王娜娜白勇
Owner BEIJING FORESTRY UNIVERSITY
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