Adsorber for cleaning exhaust gases and associated method

An adsorber and exhaust gas technology, which is applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve problems such as inability to clean up, operation interruption, and increased pressure loss, so as to save time and cost, improve equipment availability, and absorber compact effect

CN110833743AInactive Publication Date: 2020-02-25英特佳工程与环境技术有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-02-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an adsorber (1a, 1b) for cleaning exhaust gas containing at least SOx and NOx, having: a gas distributor floor (2) for supplying the exhaust gas; a bulk material region (4) which is arranged above the gas distributor floor (2) and which is filled with adsorption and / or absorption medium, wherein the bulk material region (4) has a lower portion (9) and an upper portion (10), wherein the lower portion (9) is arranged above the gas distributor floor (2) and the upper portion (10) is arranged above the lower portion (9); - an extraction device (5) arranged above the bulk material region (4) for the purpose of extracting the exhaust gas which flows upwards from below; - a removal device (3) for removing the adsorption and / or absorption medium; - a hopper (6), arranged above the extraction device (5), for supplying the adsorption and / or absorption medium which travels through the bulk material region (4) from top to bottom; - a lance (7) which, in a transition regionbetween the upper (9) and the lower (10) portion of the bulk material region (4), projects into the bulk material region (4) and has at least one opening (25) for the direct injection of an ammonia-containing gas into the bulk material region (4). Also disclosed is a method for cleaning the exhaust gas.
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Description

technical field

[0001] The present invention relates to an adsorber and a method for purifying at least x and NO x Components of the off-gassing method. Background technique

[0002] At present, the requirements for the purification degree of the waste gas produced in the industrial production process are constantly increasing. In terms of exhaust emissions, harmful substances such as NO x , SO x , HCl, dioxins, furans, heavy metals and dust concentrations must comply with legal maximum limit values. In the exhaust gas purification process, the desulfurization and denitrification of exhaust gas are particularly important. Among them, desulfurization is to convert sulfur dioxide (SO 2 ) and sulfur trioxide (SO 3 ) is separated from the exhaust gas, while denitrification is the reduction of nitrogen oxides (NO x ). Here, NO x Nitrogen monoxide (NO) and nitrogen dioxide (NO 2 ) general term, SO x is sulfur dioxide (SO 2 ) and sulfur trioxide (SO 3 ) collectively. ...

Examples

Embodiment Construction

[0051] figure 1 Shown is an adsorber 1a according to the invention for exhaust gas purification, which comprises the following components: a gas distribution floor 2; a discharge device 3; a bulk material area 4 arranged above the gas distribution floor 2; A discharge device 5 above the bulk material area 4 ; a store room 6 arranged above the discharge device 5 ; several nozzles 7 extending into the bulk material area 4 and having at least one opening that is horizontal and arranged parallel to each other. contains SO x and NO x , At the same time, the exhaust gas that may also contain HCl, dioxin, furan, heavy metals and dust passes through the gas distribution bottom plate 2 of the adsorber 1a, and is transported from below to the adsorber 1a in a substantially uniform distribution, and flows from bottom to top Through bulk zone 4 of adsorber 1a. The bulk material zone 4 is filled with activated carbon 8 as adsorbent and / or absorbent and has a lower zone 9 and an upper zo...