High-pressure continuous dense-phase biomass powder conveying device with height of delivery outlet adjustable

Abstract

The invention discloses a high-pressure continuous dense-phase biomass powder conveying device with the height of a delivery outlet adjustable, which comprises a storage silo, at least two feeding silos and a delivery silo. The principle is that the two transitional feeding silos are arranged between the storage silo and the delivery silo, are respectively provided different air ducts communicated with a main air pipeline and can control the interactive and continual feeding to the delivery silo according to the time sequence through changing the pressure difference between the two feeding silos, so that the level in the delivery silo is maintained no lower than the low level, thereby realizing the continuous and stable conveying of biomass powder to gasification equipment. The device is mainly applied in the biomass powder pressurization and gasification plant and the continuous combustion device of the biomass powder, no blockage can occur to the conveying process, and the biomass powder is conveyed continuously, smoothly and uniformly with low pulsation. Therefore, the conveying device satisfies the requirements for pressurization and gasification of the biomass powder.

Description

Technical field: [0001] The invention relates to a biomass powder high-pressure continuous dense-phase conveying device with an adjustable sending outlet height, belonging to the technical field of biomass energy utilization and powder conveying. Background technique: [0002] The use of low calorific value crop straw, forestry waste and other biomass energy is a technology developed in recent years, including direct combustion, gasification power generation, gasification synthesis and other technologies. In the biomass powder entrained bed gasification process technology, it is a key issue to realize continuous dense phase transportation of biomass powder under high pressure. Although powder conveying technology has been widely used in industrial sectors such as electric power, metallurgy, chemical industry, building materials, and light industry, the characteristics of biomass powder particles are unique, such as particle flatness, light density, and high volatile content....

AI Technical Summary

Problems solved by technology

Although powder conveying technology has been widely used in industrial sectors such as electric power, metallurgy, chemical industry, building materials, and light industry, the characteristics of biomass powder particles are unique, such as particle flatness, light density, and high volatile content. The particle characteristics of the biomass powder are also quite different. Therefore, the structure and measurement of the biomass powder conveying equipment must be compatible with the characteristics of the biomass. The existing powder conveying technology cannot be used directly. Conveying technology adapted to body characteristics

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