Sumitomo Chemical Company, Limited

Akatake Engineering Co.

Yasuhiro Miura

Yutaka Shiomi

Mitsuru Tamura

Akira Morisaki

Mituaki Sunada

Masao Morikawa

Yoshio Iino

Hiromu Iwata

Mitsumasa Ishino

Kozo Miyazaki

Sunao Ninomiya

Yukio Fukada

Shuji Matsuyama

Hiroshi Akimoto

The present invention provides a method of measuring particles and an apparatus for the same, which count only particles in liquid by distinguishing between the particles and bubbles in liquid. In order to fulfill the above requirements, in the present invention, liquid to be measured flows through a flow cell at a fixed flow rate, and a laser beam is irradiated thereto. Scattering light is generated when particles and bubbles pass through a laser beam irradiation region, and the scattering light is converted into a pulse signal by a photoelectric converter. In the pulse signals, a pulse signal having a pulse width of 100 .mu.S is regarded as corresponding to light scattered by a bubble, which is omitted from the number of pulse signals. Thus, only a pulse signal corresponding to light scattered by a particle in liquid can be measured.

Method of measuring particles and apparatus for the same

A pipe clogging detecting device which incessantly monitors states of a pipe through which fluid is flowing, and when clogging occurs, immediately alarms the occurrence of clogging to operators. The device includes a plurality of containers, a pipe interconnecting the containers, a vibration sensor provided on the pipe, and a detecting device for detecting the occurrence of clogging in the pipe, based on output signals from the vibration sensor.

Pipe clogging detecting device

A continuous powder catalyst supply apparatus and a catalyst supply system that is suitable for olefin gas phase polymerization. The supply apparatus comprises a catalyst storage chamber having a catalyst inlet port and a catalyst supply port for transmitting the catalyst to the reactor. Inside the catalyst storage chamber is a catalyst supply mechanism which substantially continuously supplies the catalyst to the catalyst supply port, and a forcible discharge mechanism which forcibly discharges the catalyst, supplied from the catalyst supply mechanism, through the catalyst supply port with a pressurized gas. The apparatus can be used to supply the catalyst to the reactor with low amounts of pressurized gas. Further, the system can be configured so as to avoid contamination of stored catalyst by reactant gas.

Continuous powder catalyst supply apparatus and catalyst supply system

According to the present invention, there is provided a flow tester for thermoplastic which uses an extrusion type plastometer including a vertically supported cylinder, a piston on which a weight is mounted at an upper portion thereof and which is inserted in the cylinder, a die mounted on a lower end of the cylinder, and a heater provided to surround the cylinder, characterized in that a sample of a thermoplastic is filled in the cylinder and is heated by the heater to melt, the molten sample is extruded from the die by the piston, a strand as an extruded material is cut, and a mass thereof is obtained, thereby testing a flow characteristic of the thermoplastic, characterized by including a strand bottle which has a cutting edge for cutting the strand and which catches the strand cut by the cutting edge, a strand bottle stocker for storing the strand bottle before and after use, a weight measuring unit for measuring a weight of the cut strand together with the strand bottle, a strand cutting unit for moving the strand bottle so that the cutting edge of the strand bottle travels along a lower end face of the die to perform cutting, and a strand bottle convey unit for transferring and conveying the strand bottle among the strand bottle stocker, the weight measuring unit, and the strand cutting unit.

Flow tester for thermoplastic, and strand cutting method

A device for detecting a coagulation in a mixed phase container, such as a fluidized bed type olefin polymerization reactor, includes at least one coagulation detecting part mounted on an inner surface of the reactor, and a coagulation detecting circuit for outputting an electrical signal in response to a change in capacitance between a main electrode of the coagulation detecting part and the surrounding inner surface of the reactor. When any coagulation is attached on the inner surface of the mixed phase container, the state of production of the coagulation can be obtained from a change in output signal from the coagulation detecting circuit connected to the coagulation detecting part.

Capacitive coagulation detecting device for mixed phase container

A tensile tester especially useful for colored specimens having pairs of projector-optic arrangements for detecting the presence of bench marks on a specimen and each including an ultraviolet lamp projector and an optic arrangement incorporating a detector for receiving luminescent rays emitted by the bench marks on the specimen upon being irradiated ultraviolet light from the projector. Support structure and a drive arrangement are provided for causing the projector optic arrangements to pursue automatically the bench marks controlled by detection of luminescent rays by means of the detectors in the optic arrangements. Elongation detectors are provided for transmitting respective displacement signals of the arrangements in response to the operation of the support and drive arrangements. An arithmetic unit of elongation is provided differences for receiving the signals from the elongation detectors and indicating the difference in spacing between the bench marks.

Growing community of inventors

Chiba, Japan

Yasuhiro Miura