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Waste heat utilization-containing active carbon thermal desorption method and apparatus thereof

A technology of activated carbon and activated carbon adsorption tower, applied in separation methods, chemical instruments and methods, other chemical processes, etc., can solve problems such as loss of heat energy

Active Publication Date: 2016-06-01
HUNAN ZHONGYE CHANGTIAN ENERGY CONSERVATION & ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] Therefore, if the hot air at about 320°C and the cooling air at about 120°C are directly discharged, a large amount of heat energy will be lost.

Method used

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  • Waste heat utilization-containing active carbon thermal desorption method and apparatus thereof
  • Waste heat utilization-containing active carbon thermal desorption method and apparatus thereof
  • Waste heat utilization-containing active carbon thermal desorption method and apparatus thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0219] Such as Figure 5 Shown in, desulfurization, denitrification device comprises activated carbon adsorption tower (20) (tower height 30 meters, cross-sectional area 120m 2 ) and analytical tower (as shown in Figure 2, the tower is 20 meters high and the cross-sectional area is 15m 2 ). The tower body of activated carbon adsorption tower (see Figure 8 ) has a multi-layered chamber structure parallel to each other in the vertical direction, that is, the left air outlet chamber B ← denitration chamber c ← desulfurization, denitration chamber b ← desulfurization chamber a ← intake chamber A → desulfurization chamber a → desulfurization, denitration Chamber b → denitrification chamber c → right outlet chamber B, in which the flue gas flows from the inner air inlet chamber A substantially horizontally outward along the left and right directions (to the B outlet chamber). For drawing convenience, Figure 5 The reaction tower (or adsorption tower) in is described as a single...

Embodiment 2

[0230] Repeat embodiment 1, just, wherein: all of the hot blast G1 ' that is exhausted from the hot blast outlet of the heating zone of desorption tower is divided into two hot blast airflows, i.e. the first hot blast airflow and the second hot blast airflow, both according to 15: The volume ratio or flow ratio of 85, wherein the first hot air flow (about 300°C) (accounting for 15vol% of the total external hot air volume or flow) is sent to the gas heat exchanger (11) upstream of the heating furnace (6) It is used to preheat the coke oven gas, the second hot air flow (about 300°C) is sent to the temperature regulation zone (or mixing, buffer zone) at the rear of the heating furnace (6) and is discharged from the combustion chamber and enters the temperature regulation zone The high-temperature hot air (G0) (about 1900°C) is mixed to adjust the temperature to 415-420°C, thus forming the hot air (G1) of the mixture, and the hot air (G1) is transported to the heating zone (2) of t...

Embodiment 3

[0232] Repeat embodiment 2, just, in addition also also will be a part (about 8vol%) of the cold wind G2 ' (about 120 ℃) ​​(" the cooling wind of " external discharge ") of the cooling air outlet discharge of the cooling zone of desorption tower (based on flow rate or volume ) to the air inlet of the combustion-supporting fan, which is sent into the air inlet of the combustion chamber of the heating furnace by the combustion-supporting fan.

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PUM

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Abstract

The invention provides a waste heat utilization-containing active carbon thermal desorption method. The method comprises the following steps: adsorbing sulfur oxides, nitrogen oxides and other pollutants in the active carbon adsorption tower of a desulphurization and denitration device by active carbon; allowing blast furnace gas or coking coal gas to flow through a heat exchanger in order to be preheated, conveying the preheated gas to the combustion chamber of a heating furnace, combusting the preheated gas, allowing high temperature hot wind (G0) discharged from the combustion chamber to flow through one temperature adjusting zone of the tail portion of the heating furnace to undergo temperature adjustment and become cooled hot wind (G1), conveying the hot wind (G1) to the heating zone of a desorption tower to desorb the active carbon, and discharging further cooled hot wind (G1') from the heating zone. Parts of the hot wind (G1') are used in preheating of the blast furnace gas or coking coal gas in the heat exchanger. Parts of the cooled wind (G2') discharged from the cooling zone of a desorption tower are used to carry out gas sealing of raw flue gas baffle plates, purified flue gas baffle plates and bypass baffle plates arranged in the whole desulphurization and denitration device. The invention also provides an active carbon desorption apparatus.

Description

technical field [0001] The present invention relates to the thermal analysis method and the device thereof that comprise the active carbon of waste heat utilization, more specifically, the present invention relates to the dry desulfurization that comprises activated carbon adsorption tower and analysis tower (or regeneration tower), denitrification device output from analysis tower A method in which heated gas (such as air or hot air) is used to seal various baffle doors in a flue gas channel so as to realize recovery and utilization of waste heat belongs to the field of sintering flue gas treatment. Background technique [0002] For industrial flue gas, especially sintering machine flue gas in the iron and steel industry, it is ideal to use desulfurization and denitrification devices and processes including activated carbon adsorption towers and desorption towers. In the desulfurization and denitrification devices including activated carbon adsorption tower and desorption t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/34B01J20/20B01D53/04
Inventor 刘旭华叶恒棣李勇刘昌齐钮心洁陈红颜学宏黄伏根魏进超
Owner HUNAN ZHONGYE CHANGTIAN ENERGY CONSERVATION & ENVIRONMENTAL PROTECTION TECH CO LTD
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