Gas pollution monitor专利检索-原电池电化学发生器电池与电池专利检索查询-专利查询网

Gas pollution monitor

阅读：173发布：2021-09-27

专利汇可以提供Gas pollution monitor专利检索，专利查询，专利分析的服务。并且Apparatus for monitoring low concentrations of nitrogen oxides and carbon monoxide in gas streams, in which carbon monoxide is determined by passing gas over iodine pentoxides to liberate quantative amounts of iodine vapour which are measured by means of a Pt-Act C or Ag/buffered halide cell associated with a galvanic cell, and nitrogen oxides are measured by passing gas through Pt-Act C or Ag/halide cells. Interfering gases are removed by known means prior to passage of gas through cell. NO concentrations may be determined in the presence of NO2, thus NO2 concentration may be determined by difference.，下面是Gas pollution monitor专利的具体信息内容。

权利要求

1. APPARATUS FOR MEASURING LOW CONCENTRATIONS OF NITROGEN OXIDES AND CARBON MONOXIDE IN A GAS WHICH APPARATUS INCLUDES MEANS FOR RECEIVING THE GAS TO BE TREATED, MEANS FOR PROVIDING TWO SEPARATE STREAMS OF THE GAS TO BE TESTED, MEANS FOR REMOVING INTERFERING GASES FROM A FIRST OF THE TWO STREAMS, MEANS FOR REACTING THE CARBON MONOXIDE PRESENT IN THE FIRST STREAM WITH A IODINE PENTOXIDE COMPOUND TO PRODUCE CORRESPONDINGLY QUANTITATIVE AMOUNTS OF IODINE, A GALVANIC CELL ASSOCIATED WITH EACH STREAMS AND COMPRISING A PLATINUM CATHODE IN CONTACT WITH A NEUTRAL BUFFERED HALIDE ELECTROLYTE IN WHICH IS IMMERSED AN ACTIVE CARBON OR SILVER ANODE, MEANS FOR CAUSING SAID IODINE PENTOXIDE CONTAINING FIRST STREAM AND SAID SECOND STREAM TO FLOW OVER THE CATHODE OF ITS ASSOCIATED CELL, MEANS FOR MEASURING THE RATE OF FLOW OF EACH STREAM THROUGH ITS ASSOCIATED CELL AND MEANS FOR MEASURING THE CURRENT FROM EACH CELL WHEN ITS ASSOCIATED STREAM PASSES THROUGH IT.

2. Apparatus as claimed in claim 1 in which means are provided for supplying gas free from carbon monoxide for the purpose of zeroing the means for measuring the current across the associated galvanic cell.

3. Apparatus as claimed in claim 1 in which means are provided for supplying a gas free from nitrogen dioxide to the galvanic cell associated with the second stream for the purpose of zeroing the current measuring means associated with that cell.

4. Apparatus as claimed in claim 1 in which means are provided in said second stream for converting nitric oxide to nitrogen dioxide and means are provided for passing, at separate times, stream containing residual nitrogen dioxide and streams containing residual nitrogen dioxide and nitrogen dioxide formed from nitric oxide.

5. Apparatus as claimed in claim 4 in which said means for converting nitric oxide to nitrogen dioxide is a bed comprising a solution or moist solid of a permanganate or a dishromate.

6. Apparatus as claimed in claim 1 in which means are provided for the removal of interfering compounds.

7. Apparatus as claimed in claim 6 wherein beds of acidified chromium trioxide and activated charcoal are provided to remove nitric oxide nitrogen dioxide, acetylene, ethylene, sulphur dioxide, hydrogen sulphide, mercaptans and ozone from the carbon monoxide stream and a bed of silver peroxide is provided to remove ozone, sulphur dioxide, hydrogen sulphide and mercaptans from the nitrogen oxides stream.

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