Eddy current self-heating nitrogen replacement and detoxification device for dioxin-containing fly ash

A nitrogen replacement and self-heating technology, which is applied in waste heat treatment, heating room maintenance, lighting and heating equipment, etc., can solve the problems of high pollution products, instability, etc., and achieve the effect of improving completeness and energy saving effect

Pending Publication Date: 2021-07-02

上海煜工环保科技有限公司

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AI-Extracted Technical Summary

Problems solved by technology

[0004] In order to overcome the problems of high pollution and product instability caused by direct heating of materials with gas flue gas or indirect heating of materials wi...

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Method used

Adopting electricity is heat source, does not need supplementary oxygen to support fuel combustion in the kiln, is reducing atmosphere in the kiln, helps the thermal decomposition of organic matter in the dedusting ash; Waste gas discharge is few in the production process, and tail gas facility investment cost is low, and tail gas treatment cost is low ; Less smoke loss, low energy consumption.

Eddy current self-heating type as shown in Figure 1-4 contains dioxin dedusting ash nitrogen displacement detoxification device, has included rotatable kiln body 100, selects eddy current self-heating type rotary kiln for use, heats up rapidly, avoids traditional fuel The kiln starts and stops for a long time and has the disadvantages of high energy consumption.

Nitrogen channel 200 pipeline front end is provided with valve (not shown in the figure), and nitrogen feed rate can be shown by flowmeter and cooperates valve (not shown in figure) opening and closing size adjustment control, nitrogen feed rate and pressure control Easier, high detoxification efficiency of fly ash dioxin

[0033] Emphasis in conjunction with Fig. 4, the heating section 120 of the kiln body 100 is provided with several lifting plates 121 at intervals. The fly ash is brought to a high place by the lifting board 121 and falls, and the fly...

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Abstract

The invention discloses an eddy current self-heating nitrogen replacement and detoxification device for dioxin-containing fly ash. The eddy current self-heating nitrogen replacement and detoxification device is characterized by comprising a kiln body, wherein the kiln body is of a hollow structure and is of a three-section structure comprising a preheating section, a heating section and a cooling section; an inductance heating device wraps the heating section; at least one nitrogen channel is arranged in the kiln body in a penetrating manner; the conveying direction of the nitrogen channel is the cooling section, the heating section and the preheating section; waste gas is discharged through an exhaust port of the preheating section; a plurality of exhaust holes are formed in the part, passing through the heating section, of the nitrogen channel; and nitrogen is discharged through the exhaust holes and then reacts with the dioxin-containing fly ash. According to the eddy current self-heating nitrogen replacement and detoxification device, the energy-saving effect is improved through the sectional structure and the counter-current design, and the fly ash is subjected to a scouring reaction through the nitrogen channel, so that the reaction completeness is improved.

Application Domain

Maintainance of heating chambersFurnace types +1

Technology Topic

EngineeringNitrogen gas +8

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Examples

Experimental program(1)

Example Embodiment

[0028] Such as Figure 1-4 The eddy current self-heat-containing dioxin removal dust removal is a rotatable kiln body 100, which is selected from the heat-thermal rotary kiln, and the temperature is rapid, and the traditional fuel kiln is soaked. Long, high energy consumption.

[0029] The kiln body 100 is a hollow structure, and there is a preheating section 110, the heating section 120, and the cooling section 130 three-segment structural arrangement; the outer portion of the heating section 120 is wrapped in an inductor heating device 122.

[0030] The inductive heating device 122 temperature control is flexible, accurate, replacement reaction effect, and the dioxin is high, and the product is safer.

[0031] With electricity as a heat source, there is no need to supplement oxygen to support fuel combustion. It is a reduction atmosphere in the kiln. It is conducive to the heat-resistant decomposition in dust removal; there is less exhaust gas in the production process, and the cost of investment in exhaust gas is low, and the exhaust gas treatment cost is low; Less loss, low energy consumption.

[0032] In the middle of the kiln body 100 is a ring hollow structure, and the kiln body 100 is provided with a preheating section 110 (kiln head cover) and the cooling section 130 (kiln tail), the exhaust port 111 is disposed at a preheating section 110 (kiln head cover The upper part. The front end of the kiln head is provided with a feed opening (not shown), and the bottom of the kiln tail cover is provided (not shown in the figure).

[0033] Key combination Figure 4 The heat section 120 of the kiln body 100 is provided with several copy plates 121. The fly ash is brought to the height of the plate 121, and the fly ash is always touched, with nitrogen, and the replacement effect is better.

[0034] The nitrogen passage 200 is performed in the kiln body 100, and the direction of transport of the nitrogen passage 200 is the cooling section 130, the heating section 120, and the preheating section 110, the exhaust gas is discharged by the exhaust port 111 of the preheating section 110;

[0035] The flue gas is inverted, and the discharged exhaust gas will enter the preheating section 110 heating, and the energy saving effect is good.

[0036] The nitrogen passage 200 has a plurality of exhaust holes 210 through the portion of the heating section 120, and the nitrogen gas is discharged by the exhaust hole 210 to react with dioxin removal ash.

[0037] Specifically, the heating section 120 of the kiln body 100 is opened, and the nitrogen passage 200 is formed through the heating section 120 of the kiln body 100 through the connection flange 220. The nitrogen passage 200 is located in the center of the heat generating kiln body. It is relatively close to the fly ash, the flushing force is large, which will be fly gray, which is conducive to mixing with nitrogen and fly ash.

[0038] The nitrogen passage 200 is a metal pipe, and the input of the nitrogen passage 200 is connected to the gas source (not shown) by the valve (not shown) in the figure.

[0039] The front end of the nitrogen passage 200 conduit is provided with a valve (not shown), and the amount of nitrogen gas can be displayed in the flow meter (not shown) to the valve (not shown), the nitrogen gas pass and the pressure control are easier, Flying gray dioxin is more detoxification efficiency

[0040] The two ends of the nitrogen passage 200 are respectively supported by the first fixing mechanism 300 and the second fixing mechanism 400.

[0041] The first fixing mechanism 300 includes a first fixing pile 310 and a telescopic groove 320 that is penetrating between the two ends of the first fixing pile 310, and the telescopic groove 320 is disposed at the first fixing pile 310 over the first fixed pile 310. The input end of the nitrogen passage 200 is secured to the telescopic groove 320 through the nylon sleeve 323.

[0042] The second fixing mechanism 400 includes a second fixing pile 410 and a fixed groove 420 disposed at the top of the second fixing pile 410 through the fixing groove 424, and the fixed slot 420 is provided by the fixed slide 421 and the fixed bolt 422 in the second The fixed pile 410 upper portion, the fixed slot 420 is a buffer structure.

[0043] The output of the nitrogen passage 200 is fixed to the fixed slot 420 through the nylon casing 423.

[0044] The fixing groove 420 reserves a certain metal expansion telescopic buffer space, which is finally fixed by a fixed slot 424 to secure a nitrogen passage. The telescopic groove 320 reserves an infinite metal expansion telescopic buffer space, and the nitrogen passage 200 can be freely expanded in the telescopic groove 320 to avoid the deformed and rupture of the nitrogen passage 200, and the nylon sleeve 323 is small, effectively protects the nitrogen passage 200, expansion telescopic The process will not be worn.

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Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Improve energy saving effect
Improve completeness

Eddy current self-heating nitrogen replacement and detoxification device for dioxin-containing fly ash

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Image

Examples

Example Embodiment

PUM

Description & Claims & Application Information

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