Multilayer fluidized bed parsing device for conducting pneumatic material return through row tube type heat exchange and coupling of molten salt

A technology of a multi-layer fluidized bed and an analytical device is applied in the field of regeneration and utilization of industrial pollutant purifying agents, and can solve the problems of unsatisfactory thermal efficiency, unsatisfactory heat exchange effect of activated coke, unsatisfactory heat exchange effect of reactor, etc. , to achieve the effect of realizing the uniform distribution of heat source points, improving the utilization rate of the device, and saving the space occupancy rate of the device

Pending Publication Date: 2016-06-29
BEIJING SPC ENVIRONMENT PROTECTION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the most widely used reactor is the rotary kiln, which is relatively advanced in structural design and process arrangement, especially in large-particle activated coke or activated carbon, but the industrial design of the rotary kiln is 3-5%. The filling rate is relatively low, and the heat exchange effect inside the reactor is not ideal, and the sealing of the kiln head and kiln tail is also a technical difficulty
[0003] In terms of moving bed activated coke desulfurization in steel mills, the regeneration of regular granular activated coke is widely used in view of the low filling rate of the rotary kiln, and the moving bed with built-in heat exchange is widely used. Heat, the heat transfer effect of act

Method used

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  • Multilayer fluidized bed parsing device for conducting pneumatic material return through row tube type heat exchange and coupling of molten salt
  • Multilayer fluidized bed parsing device for conducting pneumatic material return through row tube type heat exchange and coupling of molten salt
  • Multilayer fluidized bed parsing device for conducting pneumatic material return through row tube type heat exchange and coupling of molten salt

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Experimental program
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Effect test

Embodiment 1

[0044] Heating device adopts fuel molten salt furnace 18, molten salt pump 19, molten salt pool 20, separator two 22, air blower 23, bag filter 24, induced draft fan two 25 and igniter 13. The fuel molten salt furnace 18 is a built-in tubular heat exchange fuel burner. According to the production scale, the small scale is a simple tube heat exchange tube, and the large scale should be a membrane wall arrangement; the fuel can be coal, natural gas, oil, biogas , coke oven gas and other fuels. The exterior of the internal heat exchange wall of the fuel molten salt furnace 18 can be coated with anti-wear cement, and the internal oxygen or air distribution needs to be supplied in stages.

[0045] The working principle of the system is as follows:

[0046] Solid particle process part: the screw feeder 6 transports the activated coke or activated carbon that needs to be regenerated to the top of the multi-layer fluidized bed body 1, and the solids are regenerated through the multi-...

Embodiment 2

[0051] Such as figure 2 , 4 , 5, the heating device can also use an electric heating molten salt furnace 27 to replace the fuel molten salt furnace 18. The furnace 27, the molten salt pump 19, the molten salt pool 20, and the igniter 13 are connected in sequence. The electric heating molten salt furnace heats evenly, and at the same time, the power can be adjusted more accurately, the volume is simplified, and the occupied area is reduced. At the same time, the power plant can provide high-temperature steam, so the circulating water pool 14 is equipped with a water cooling tower 28 to reduce the temperature of the circulating water.

[0052] The active coke analysis method specifically includes the following steps:

[0053] Step 1: The screw feeder 6 transports the activated coke or activated carbon that needs to be regenerated to the top of the multi-layer fluidized bed 1, and the solids pass through the multi-layer fluidized bed from top to bottom in order to be regenera...

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PUM

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Abstract

The invention discloses a multilayer fluidized bed parsing device for conducting pneumatic material return through row tube type heat exchange and coupling of molten salt. The multilayer fluidized bed parsing device comprises a screw feeder (6), a multilayer fluidized bed (1), a slag cooler (8), a separator, a heat exchanger (10), a heat supply device, a water vapor generating unit and a spraying unit. The multilayer fluidized bed parsing device has the advantages of being high in heat transfer efficiency, high in plot ratio, even in heat exchange, controllable in stay time and the like and has an obvious advantage on the aspect of small granular activated coke compared with a traditional technology.

Description

technical field [0001] The invention relates to the regeneration and utilization of industrial pollutant purifiers, and is particularly suitable for the regeneration and recycling of industrial flue gas purifiers such as activated coke and activated carbon. Background technique [0002] Adsorbents such as activated carbon or activated coke are widely used in the adsorption and removal of industrial pollutants due to their rich specific surface area and developed pores. For example, activated carbon removes organic gases such as industrial VOCs, and activated coke removes sulfur dioxide and nitrogen in industrial flue gas. Oxygen compounds, mercury and other heavy metals. Due to the existence of pollutants blocking the micropores on the surface of the active coke, the adsorption capacity of the adsorbent is reduced. From the perspective of energy saving, emission reduction and circular economy, the active coke needs to be regenerated and recycled. Therefore, it is necessary t...

Claims

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Application Information

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IPC IPC(8): B01J20/34B01J20/20B01D53/02
CPCB01D53/02B01J20/20B01J20/3416B01D2253/102B01D2258/0283B01D2259/4009
Inventor 姚常斌张书宾高永军左嫣然张开元
Owner BEIJING SPC ENVIRONMENT PROTECTION TECH
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