IV New Patents

ganically bound oxygen, nitrogen and/or sulfur, into an innocuous hydrocarbon stream. These waste materials together with hydrogen are pas- sed over a hydrogenating catalyst at 250 degrees- 400 degrees C. and under increased pressure. The effluent of this hydrogenolysis is cooled and separated into a non-toxic liquid hydrocarbon stream, a hydrogen halogenide, ammonia, and/or a hydrogen sulfide containing stream and a gaseous stream of light hydrocarbons and hydrogen. The waste material which contains 0.5-60 weight % halogen and possibly contains up to 10% sulfur and/or small amounts of nitrogen-containing compounds is conditioned and this conditioned stream is passed, together with hydrogen under a prssure of 30-80 bar and with a LHSV of 0.5-2.5 H-I, over a column filled with absorbent, to guard the hydrogenating catalyst, and subsequently over the hydro- genating catalyst.

panel provided in the opening of the reflector and closing the opening for transmitting U.V. radiation therethrough and substantially blocking water vapor, (d) a sample support, (e) temperature adjusting device, (f) a compartment having accommodated therein the above ele- ments (a)-(e), (g) a recycling duct provided with a heat exchanger and blower, (h) a humidifier and (i) a control device for giving operational in- structions to maintain a sample on the sample support at a predetermined temperature while the lamp is on and to subject the sample to a con- densation condition while the lamp is off.

4818384

RECIRCULATING SAND FILTER

Robert Mayer

481~22

REMOTE ENVIRONMENTAL MONITOR SYSTEM

John P Vache, Jerry E Johnson, Lon O Hocker, John Godley assigned to Ryan Instruments Inc

An electronic measurement, data storage and readout system utilizing a programmable pro- cessor and controller to manipulate data measurements from a transducer is disclosed. Means are provided for electronically safeguarding the stored data. In the preferred embodiment means are also provided for reading out the data directly to a dedicated prin- ter for producing graphical representations of the data and for converting the data to frequency-shift keyed signals which can be trans- mitted over telephone lines to the dedicated prin- ter. A redeployment station is provided to reinitialize the programmable processor and controller.

4817447

WEATHER RESISTANCE TESTER

A recirculating sand filter system for the treat- ment of waste water comprises a septic tank (10) for receiving waste water, a recirculating pump tank (18) connected to the septic tank for receiving effluent from the septic tank, and one or more sand filter modules (12, 14). The recir- culating pump tank has a pump (48) connected to a pump outlet line (32) connected to the sand filter modules. A distribution pipe (28) con- nected to the pump outlet line is positioned to spray water over a surface of the sand filters. The pump is controlled by a timer (74) to periodically pump water to dose the sand filters. The sand fil- ters have one or more collection pipes (34, 36) at the bottom of the filter for collecting filtrate and returning the filtrate to the recirculating pump tank via a return line (42) by gravity feed. A recirculating valve (52) in the recirculating pump tank is connected between the return line and a discharge line exiting the recirculating pump tank. The recirculating valve comprises a T-pipe (54) consisting of a horizontal straight section and a downwardly directed branching arm (66) having a large radius curvature allowing for smooth, nonturbulent flow. A float valve is con- nected to the branching arm for blocking the flow of water into the recirculating pump tank when a level of water in the tank exceeds a pre- determined maximum level.

Yoshio Kashima, Hirofumi Kinugasa, Yasuo Yoshida, Teruo Iwanaga, Kasukabe, Japan as- signed to Dainippon Plastics Co Ltd; Iwasaki Electric Co Ltd

A weather resistance tester comprising: (a) a U.V. radiation source, (b) a reflector, (c) a shield

4818407

NITRIFICATION WITH AMMONIA ENRICHMENT

Eugene D Bogusch