Determining oxygen demand of combustibles in aq halide dispersion - with analyser contg. combustion and decompsn layers

    公开(公告)号:DE2554764A1

    公开(公告)日:1976-06-10

    申请号:DE2554764

    申请日:1975-12-05

    Abstract: Process for measuring total O2 demand of combustible materials in an aq. dispersion, contg. alkali- or alkaline earth halide, takes place by (a) allowing a carrier gas stream of O2-contg. inert gas to flow at constant rate through a catalyst layer inside a conduit heated to a temp. supporting combustion; (b) passing gas leaving catalyst layer into a decompsn. agent, heated instantly to a decompsn. temp. for NACL or HOCL by catalytic activity of decompsn. agent, (c) passing gas leaving decompsn. agent layer into a continuously working quantitative detector for gaseous O2, which generates an electrical signal corresponding to O2- content of outlet gas and (d) injecting an aq. combustible material-contg. dispersion into combustion conduit upstream from catalyst layer and generating an electrical signal corresponding to total O2-requirement of aq. dispersion. Used for controlling impurities in waste water and seawater.

    METHOD AND APPARATUS FOR ANALYZING SILICIC ACID ION

    公开(公告)号:JPH0315754A

    公开(公告)日:1991-01-24

    申请号:JP32694389

    申请日:1989-12-15

    Abstract: PURPOSE:To analyze the silicic acid ions in water with high sensitivity by separating the silicic acid ions from other ions by using a sepn. column, then determining the ions. CONSTITUTION:The color forming reagent supplied from a color developing reagent supplying line 13 into a color developing reagent tank 29 is preheated to a reaction temp. by a color development reactor 16 while the color developing agent is deaerated by a deaerator 18 and is applied with the pressure loss by a pressurizing coil 17. The reagent is then introduced by a pump 12 to a mixing point 11. The reagent is mixed with an electrolytic eluant from the sepn. column 8 at a mixing point 11 and the mixture is introduced to a vessel 16. The mixture is further cooled near to the temp. of an absorption photometer 15 by a cooling coil 22 and is then introduced to the photometer 15. The analysis of a so-called blank state is executed by the photometer 15 with the liquid mixture in which the silicic acid ions are not included. The liquid mixture is discharged to the outside of the system via a drain line 26 while a back pressure is applied thereon by a back pressure coil 23 after the analysis.

    PRODUCTION OF ION EXCHANGE COLUMN

    公开(公告)号:JPH02254359A

    公开(公告)日:1990-10-15

    申请号:JP7787689

    申请日:1989-03-28

    Abstract: PURPOSE:To fill a fiber-like ion exchange resin at a fixed rate by shrinking a heat shrinking tube by heat after the tube is filled with a desired amount of the fiber-like ion exchange resin. CONSTITUTION:A heat shrinking tube 1 is shrunken by heat after filled with a desired amount of a fiber-like ion exchange resin 2. Connecting pipes 4 and 4' having filters 3 and 3' are integrated at ends of the tube 1 simultaneously with the heat shrinking of the tube 1. This enables the filling with the fiber-like ion exchange resin at a fixed rate.

    DEVICE FOR MEASURING TOTAL OXYGEN CONSUMPTION AMOUNT

    公开(公告)号:JPS51138497A

    公开(公告)日:1976-11-30

    申请号:JP6253475

    申请日:1975-05-27

    Abstract: PURPOSE:To measure in high accuracy total oxygen consumption amount of specimen of low polluted level by providing a flow control valve having characteristics for supplying constant gas flow rate regardless of secondary pressure variation between a device for supplying stock gas stream of insert gas including oxygen and combustion device of specimen to supply stock gas stream to the combustion device.

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