US1801515A - Apparatus for electrical treatment of gases containing corrosive material and mercury - Google Patents
Apparatus for electrical treatment of gases containing corrosive material and mercury Download PDFInfo
- Publication number
- US1801515A US1801515A US346808A US34680829A US1801515A US 1801515 A US1801515 A US 1801515A US 346808 A US346808 A US 346808A US 34680829 A US34680829 A US 34680829A US 1801515 A US1801515 A US 1801515A
- Authority
- US
- United States
- Prior art keywords
- mercury
- electrodes
- gases
- electrical
- gases containing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000007789 gas Substances 0.000 title description 20
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 title description 18
- 229910052753 mercury Inorganic materials 0.000 title description 17
- 239000000463 material Substances 0.000 title description 9
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 239000012716 precipitator Substances 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 238000001556 precipitation Methods 0.000 description 5
- 229940100892 mercury compound Drugs 0.000 description 4
- 150000002731 mercury compounds Chemical class 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 229910000497 Amalgam Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000005267 amalgamation Methods 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- FCAIWVDPJSUDCL-UHFFFAOYSA-N copper mercury Chemical compound [Cu].[Cu].[Cu].[Cu].[Hg].[Hg].[Hg] FCAIWVDPJSUDCL-UHFFFAOYSA-N 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/60—Use of special materials other than liquids
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S55/00—Gas separation
- Y10S55/38—Tubular collector electrode
Definitions
- This invention relates to means for electrical treatment of gases containing corrosive material andmercury, and particularly to apparatus for subjecting such gases to electrical action to precipitate suspended material therefrom.
- the main object of the present invention is to prevent or minimize the effect of corrosive gases on metallic electrodes used in such apparatus, by providing such electrodes with amalgamated or mercury coated surfaces adapted to resist the corrosive action.
- a further object of the invention is to provide for such amalgamation or coating by operation of the mercury bearing gases on the electrodes.
- Apparatus for treatment of gases by high tension electrical field for example, for the purpose of precipitating suspended material therefrom, comprises in general, discharge electrode means, opposing electrode-means, means for maintaining high potential difference between the discharge and opposing electrode meansand means for passing gases to be treated between such electrodes.
- the discharge electrodes are generally of relatively small area and great length, being for example, wires, rods or chains, and it will be understood that it is necessary to make said electrodes of metal in order to obtain
- gases bearing mercury fumes arising from mercury distillation apparatus for the purpose of separation of suspended dust, or for the purpose of precipitation of condensed mercury particles, it has 1 coat them with such a metal.
- trode when exposed to contact with the gases corrosive action on metal electrodes as to require frequent replacement thereof. I have discovered that this corrosive action may be done away with or minimized by providing the electrodes with an amalgamated coating or. surface adapted to resist the corrosive action.
- the metallic electrodes of such an apparatus of amalgamable metal such as copper
- an elecbearing corrosive agents and mercury vapor and/or mercury compounds becomes automatically coated with mercury or with copper-mercury amalgam, and the resulting coating successfully resists the corrosive action of the acid fumes
- the electrodes having surfaces of amalgamable material may be coated or treated with mercury or other mercury com ound before being put into operation, but in general this is not necessary as the amal amation takes place automatically and rapidly in the ordinary operation of the apparatus, by the action of the mercury and/or mercury compound present in the gases brought into contact with the electrodes.
- the collecting electrodes of an elec trical precipitator shall also be of metal, I prefer to also make said collecting electrodes of amalgamable metal, such as copper or to coat them with such metal, the collecting electrodes, for example being made of plates, screens or rod-curtains of copper or of iron or steel coated with copper.
- the collecting electrodes for example being made of plates, screens or rod-curtains of copper or of iron or steel coated with copper.
- the gases to be treated are passed between the discharge and collecting electrodes, and the metallicelectrodes being of copper or copper coated as described become amalgamated by the action of the mercury and/0r mercury compounds in the gases or in case the said electrodes have already been superficially amalgamated as described, the action of the mercury content of the gases will tend to reinforce the amalgamated coating or to renew it in case of injury thereto, so that in any case the amalgamated coating on the electrodes is maintained in efi ective mercury coated condition during the operation of the apparatus, thereby preventing or minimizing the corrosive efi'ect of the gases on, the electrodes, the effect of such gases on the mercury coating being negligible.
- An electrical precipitator comprising discharge and collecting electrodes, said discharge electrodes consisting of metal and the surfaces thereof being amalgamated.
- An electrode for electrical precipitators consisting of metal and having its surface
Landscapes
- Treating Waste Gases (AREA)
- Electrostatic Separation (AREA)
Description
Apl'll 21, 1931. K, l MARSHALL 1,801,515
APPARATUS FOR ELECTRICAL TREATMENT OF GASES CONTAINING CORROSIVE MATERIAL AND MERCURY Filed March 13, 1929 am aamahcl.
INVENTOR.
ATTORNEYS.
Patented Apr. 21, 1931 UNITED STATES'PATENT OFFICE K ENNETH I. MARSHALL, OF LOS AN GELES, CALIFORNIA, ASSIGNOR TO INTERNATIONAL PRECIPITATION COMPANY, OF LOS ANGELES, CALIFORNIA,- A CORPORATION 01 CALL PORNIA APPARATUS FOR ELECTRICAL'TREATMENT OF GASES CONTAINING CORROSIVE MATERIAL AND MERCURY Application filed March 13, 1929. Serial No. 346,808.
This invention relates to means for electrical treatment of gases containing corrosive material andmercury, and particularly to apparatus for subjecting such gases to electrical action to precipitate suspended material therefrom.
The main object of the present invention is to prevent or minimize the effect of corrosive gases on metallic electrodes used in such apparatus, by providing such electrodes with amalgamated or mercury coated surfaces adapted to resist the corrosive action. A further object of the invention is to provide for such amalgamation or coating by operation of the mercury bearing gases on the electrodes.
The accompanying drawing is a vertical section of an electrical precipitator according to my invention.
Apparatus for treatment of gases by high tension electrical field, for example, for the purpose of precipitating suspended material therefrom, comprises in general, discharge electrode means, opposing electrode-means, means for maintaining high potential difference between the discharge and opposing electrode meansand means for passing gases to be treated between such electrodes.
The discharge electrodes are generally of relatively small area and great length, being for example, wires, rods or chains, and it will be understood that it is necessary to make said electrodes of metal in order to obtain In the treatment of gases bearing mercury fumes arising from mercury distillation apparatus for the purpose of separation of suspended dust, or for the purpose of precipitation of condensed mercury particles, it has 1 coat them with such a metal. trode when exposed to contact with the gases corrosive action on metal electrodes as to require frequent replacement thereof. I have discovered that this corrosive action may be done away with or minimized by providing the electrodes with an amalgamated coating or. surface adapted to resist the corrosive action. For this purpose I prefer to make the metallic electrodes of such an apparatus of amalgamable metal, such as copper, or to Such an elecbearing corrosive agents and mercury vapor and/or mercury compounds, becomes automatically coated with mercury or with copper-mercury amalgam, and the resulting coating successfully resists the corrosive action of the acid fumes, If desired, the electrodes having surfaces of amalgamable material may be coated or treated with mercury or other mercury com ound before being put into operation, but in general this is not necessary as the amal amation takes place automatically and rapidly in the ordinary operation of the apparatus, by the action of the mercury and/or mercury compound present in the gases brought into contact with the electrodes.
In applying my invention to electrical precipitators in which the discharge electrodes consist of wires, rods or chains, I make such.
The r sired that the collecting electrodes of an elec trical precipitator shall also be of metal, I prefer to also make said collecting electrodes of amalgamable metal, such as copper or to coat them with such metal, the collecting electrodes, for example being made of plates, screens or rod-curtains of copper or of iron or steel coated with copper.' lhe accompanying drawing illustrates conventionally an electrical precipitator of a typical form in which the collecting electrodes 1 and charge electrodes 2 are formed of metal, such as described, having amalgamated surfaces, said precipitator having the usual gas inlet means 3, outlet means t for the cleaned gas, and means 5 for receiving precipitated material, and suitable electrical connections indicated at 7 being provided for maintaining the high potential diflierence between the elec- 20 trodes. In many cases it is found practicable to use semi-conducting materials, such as concrete, terra cotta, masonry or Wood for the collecting electrodes, it having been "found that the conductivity of such electrodes under conditions existing in the electrical precipitation of suspended material from mercury recovery furnaces, is sutiicient for the purpose of electrical precipitation, it being understood that the discharge incident to the electrical precipitation operation involves only a small current flow and the high resistance of the collecting electrode is, therefore, not inimical to successful operation. The semiconducting material specified are in general substantially immune to corrosive action, so that in such cases the objects of my invention are suflicientl attained by providing the discharge electro es alone with an amalgamated coating.
In the operation of the electrical precipitator on gases containing mercury and/or mercury compounds, the gases to be treated are passed between the discharge and collecting electrodes, and the metallicelectrodes being of copper or copper coated as described become amalgamated by the action of the mercury and/0r mercury compounds in the gases or in case the said electrodes have already been superficially amalgamated as described, the action of the mercury content of the gases will tend to reinforce the amalgamated coating or to renew it in case of injury thereto, so that in any case the amalgamated coating on the electrodes is maintained in efi ective mercury coated condition during the operation of the apparatus, thereby preventing or minimizing the corrosive efi'ect of the gases on, the electrodes, the effect of such gases on the mercury coating being negligible. 6 I claim:
1. An electrical precipitator comprising discharge and collecting electrodes, said discharge electrodes consisting of metal and the surfaces thereof being amalgamated.
2. An electrode for electrical precipitators consisting of metal and having its surface
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US346808A US1801515A (en) | 1929-03-13 | 1929-03-13 | Apparatus for electrical treatment of gases containing corrosive material and mercury |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US346808A US1801515A (en) | 1929-03-13 | 1929-03-13 | Apparatus for electrical treatment of gases containing corrosive material and mercury |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1801515A true US1801515A (en) | 1931-04-21 |
Family
ID=23361128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US346808A Expired - Lifetime US1801515A (en) | 1929-03-13 | 1929-03-13 | Apparatus for electrical treatment of gases containing corrosive material and mercury |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1801515A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3690043A (en) * | 1968-11-25 | 1972-09-12 | Bodo Futterer | Electrofilter for gases |
| US4419107A (en) * | 1980-11-10 | 1983-12-06 | Roydhouse Richard H | Mercury filtering apparatus and method |
| US4710203A (en) * | 1985-01-16 | 1987-12-01 | Metallgesellschaft Aktiengesellschaft | Electrostatic precipitator electrode |
| US5759240A (en) * | 1997-01-28 | 1998-06-02 | Environmental Elements Corp. | Laminar flow electrostatic precipitator with sandwich structure electrodes |
| US6663690B2 (en) * | 2001-09-24 | 2003-12-16 | Johns Hopkins University | Removal of elemental mercury by photoionization |
| US6761752B2 (en) * | 2002-01-17 | 2004-07-13 | Rupprecht & Patashnick Company, Inc. | Gas particle partitioner |
-
1929
- 1929-03-13 US US346808A patent/US1801515A/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3690043A (en) * | 1968-11-25 | 1972-09-12 | Bodo Futterer | Electrofilter for gases |
| US4419107A (en) * | 1980-11-10 | 1983-12-06 | Roydhouse Richard H | Mercury filtering apparatus and method |
| US4710203A (en) * | 1985-01-16 | 1987-12-01 | Metallgesellschaft Aktiengesellschaft | Electrostatic precipitator electrode |
| US5759240A (en) * | 1997-01-28 | 1998-06-02 | Environmental Elements Corp. | Laminar flow electrostatic precipitator with sandwich structure electrodes |
| US6663690B2 (en) * | 2001-09-24 | 2003-12-16 | Johns Hopkins University | Removal of elemental mercury by photoionization |
| US6761752B2 (en) * | 2002-01-17 | 2004-07-13 | Rupprecht & Patashnick Company, Inc. | Gas particle partitioner |
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