Process and apparatus for removing oxides of nitrogen and sulfur

Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Nitrogen or nitrogenous component

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

422171, 422172, 422177, 423239A, 423239R, 423244A, 423400, C01B 2100

Patent

active

047833254

ABSTRACT:
A process provided in accordance with practice of this invention for lowering the molar ratio of NO to NO.sub.2 in flue gas by converting a portion of flue gas nitric oxide (NO) to nitrogen dioxide (NO.sub.2), for removing the associated oxides of sulfur (SO.sub.x) and nitrogen (NO.sub.x) from the flue gas prior of discharge of the flue gas into the atmosphere and an apparatus for practicing the process.

REFERENCES:
patent: 2288091 (1942-06-01), Hoover
patent: 2309845 (1943-02-01), Hodge
patent: 2491919 (1949-12-01), Egly
patent: 3589863 (1971-06-01), Frevel et al.
patent: 3823676 (1974-07-01), Cook et al.
patent: 3880618 (1975-04-01), McCrea et al.
patent: 3880629 (1975-04-01), Dulin et al.
patent: 3932589 (1976-01-01), Teller
patent: 3957949 (1976-05-01), Senjo et al.
patent: 3969482 (1976-07-01), Teller
patent: 3977844 (1976-08-01), Van Slyke
patent: 4018868 (1977-04-01), Knight
patent: 4024219 (1977-05-01), Takahashi et al.
patent: 4062926 (1977-12-01), Knight
patent: 4213944 (1980-07-01), Azuhata et al.
patent: 4323544 (1982-04-01), Magder
patent: 4350669 (1982-09-01), Izumi et al.
patent: 4375455 (1983-03-01), Teller et al.
patent: 4385039 (1983-05-01), Lowell et al.
patent: 4442079 (1984-04-01), Donnelly et al.
patent: 4442080 (1984-04-01), Donnelly et al.
patent: 4454099 (1984-06-01), Moffat
patent: 4564510 (1986-01-01), Bechthold et al.
patent: 4603036 (1986-07-01), Botton et al.
Takahashi et al, "Development of MACT in Furnace NO.sub.x Removal Process for Utility Steam Generators", presented 44th Annual Meeting of the American Power Conference, Apr. 26-28, 1982.
J. Y. Chen, et al., "The Oxidation of NO to NO.sub.2 During Combustion Quenching Processes."
K. Felsvang, et al., "Acid Rain Prevention Thru New SOx/NOx Dry Scrubbing Process," presented at 1983 Joint Power Convention, Indianapolis, Indiana, Sep. 1983.
Shah, et al., Owens Lake Trona for Dry SO.sub.2 Removal, Lake Minerals Corporation, Jun. 1983.
L. J. Muzio, et al., "22 MW Coal-Fired Demonstration of Dry SO.sub.2 Scrubbing with Sodium Sorbent Compounds."
H. Takeuchi, et al., "Simultaneous Absorption of SO.sub.2 and NO.sub.2 in Aqueous Solutions of NaOH and Na.sub.2 SO.sub.3, " Ind. Eng. Chem. Process Des. Dev., vol. 17, No. 4, 1978.
M. Schutz, et al., "Dry Injection Scrubbing of Flue Gases According to the Shu-Process," 1st Joint EPS/EPRI--Symposium on Dry SO.sub.2 and Simultaneous SO.sub.2 /NOx Control Technologies, San Diego, California.
Pozdnyakov, et al., "Use of IR Spectroscopy to Investigate Chemisorption of Nitric Oxide and Nitrogen Dioxide on Metallic Oxides," Scientific-Research Institute of Physics, A. A. Zhdanov Leningrad State University, 1973.
Blyholder, et al., "Structure of Surface Species. Adsorption of Nitrogen Dioxide on Oil- and Silica-Supported Nickel and Iron," The Journal of Physical Chemistry, vol. 70, No. 2, 1966.
C. Chang, "Infrared Studies of SO.sub.2 on Gamma-Alumina," Journal of Catalysis, 53, 374-385 (1978).
V. Bland, et al., "Characterization of Alternate Sodium Sorbents for Fabric Filter SO.sub.2 Capture," presented t First Joint Symposium on Dry SO.sub.2 and Simultaneous SO.sub.2 /NOx Control Technologies, Nov. 13-16, 1984, San Diego, California.
N. D. Shah, "Pollution Control Practices; Dry Scrubbing of SO.sub.2," CEP Jun. 1982.
H. Takeuchi, et al., "Absorption of Nitrogen Dioxide in Sodium Sulfite Solution from Air as a Diluent," Ind. Eng. Chem. Process Des. Dev., vol. 16, No. 4, 1977.
H. Kobayashi, et al., "Removal of Nitrogen Oxides with Aqueous Solutions of Inorganic and Organic Reagents," Environmental Science and Technology, vol. 11, No. 2, Feb. 1977.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Process and apparatus for removing oxides of nitrogen and sulfur does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process and apparatus for removing oxides of nitrogen and sulfur, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and apparatus for removing oxides of nitrogen and sulfur will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-463212

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.