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Abatement of acid gas emissions

阅读：717发布：2023-04-09

专利汇可以提供Abatement of acid gas emissions专利检索，专利查询，专利分析的服务。并且The application discloses that a high efficiency of abatement of acid gas emissions in an effluent gas of an industrial or commercial manufacturing or treatment process can be achieved by passing the effluent through a particulate chromatographic mass of nepheline syenite, a naturally occurring ore, on which a certain amount of water is adsorbed. The wetting of, and the consequent adsorption of water by, the ore may be effected by passing a stream of humid air through the mass of particles either prior to or concurrently with the arrival of the acid gasladen effluent thereat, or alternatively by passing the effluent through a humidifying zone prior to its coming in contact with the ore. An additional advantage found is that particulate emissions, if present, are also abated. In lieu of nepheline syenite, pot line alumina or activated alumina, in either case pretreated with an aqueous solution of sodium hydroxide or sodium carbonate, may be used as the adsorbent medium. This abstract is not to be taken as a complete exposition or as a limitation of the present invention, however, the full nature and extent of the invention being discernible only by reference to and from the entire disclosure.，下面是Abatement of acid gas emissions专利的具体信息内容。

权利要求

2. The method of claim 1, wherein said nepheline syenite is finely ground.

3. The method of claim 1, wherein said nepheline syenite is ground to a particle size in the range of 50 mesh (U.S. sieve) to 5 microns.

4. The method of claim 3, wherein the particle size of said nepheline syenite is in the range of about 100-325 mesh.

5. The method of claim 3, wherein the particle size of said nepheline syenite is in the range of about 5-20 microns.

6. The method of claim 1, wherein said nepheline syenite is coarsely ground.

7. The method of claim 1, wherein said nepheline syenite is ground to a particle size in the range of about 8-14 mesh.

8. The method of claim 1, wherein said mass of said nepheline syenite is contained in a baghouse.

9. The method of claim 1, wherein said mass of said nepheline syenite is introduced into said stream of said effluent gas and is then directed therewith into a baghouse, said nepheline syenite with adsorbed acid gas emissions remaining in the baghouse for periodic removal therefrom.

10. The method of claim 1, wherein said mass of said material is in the form of a bed deposited on a screen.

11. The method of claim 1, wherein the wetting of said nepheline syenite is effected by moisture carried by a stream of air passing through said mass of nepheline syenite.

12. The method of claim 11, wherein said stream of air is passed through said mass of nepheline syenite prior to the latter being contacted by said effluent gas.

13. The method of claim 11, wherein said stream of air is passed through said mass of nepheline syenite concurrently with the latter being contacted by said effluent gas.

14. The method of claim 1, wherein the wetting of said nepheline syenite is effected by moisture carried by said stream of effluent gas passing through said mass of nepheline syenite.

15. The method of claim 14, wherein said moisture carried by said stream of effluent gas is imparted thereto by passing the same through a humidifying zone prior to the contact of said effluent gas with said nepheline syenite.

16. The method of claim 15, wherein said stream of effluent gas is subjected in said humidifying zone to a high pressure water quench.

17. The method of abating acid gas emissions in an effluent process gas, comprising preparing a particulate mass of finely ground nepheline syenite, introducing the mass of particles into a baghouse, wetting said mass of particles with water vapor either prior or subsequent to the introduction of said mass of particles into said baghouse, and passing said effluent gas through said baghouse, said nepheline syenite particles selectively adsorbing said acid gas emissions from said effluent gas.

18. The method of claim 17, wherein the extent of wetting of said mass of particles is predetermined to add thereto about 10-50 lbs. of water per 100 lbs. of nepheline syenite.

19. The method of claim 18, wherein said water vapor is added prior to the introduction of said particles into said baghouse.

20. The method of claim 18, wherein said water vapor is added suBsequent to the introduction of said particles into said baghouse.

21. The method of claim 18, wherein said water vapor is added by passing a moisture-carrying stream of gas through said mass of particles.

22. The method of claim 21, wherein said gas carrying said water vapor is air.

23. The method of claim 21, wherein said gas carrying said water vapor is said effluent gas.

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