Miura Co., Ltd.

Other

Osaka Gas Company Limited

Miura Institute of Research & Developement Co., Ltd.

Masazumi Yamashita

Katsuhisa Honda

Junichi Nakajima

Hirofumi Nakamura

Kenichi Kimura

Kazuhiro Tachino

Tominori Sato

Sadatoshi Takechi

Yoshitami Tsubota

Yuuji Ukena

Noriaki Hamada

Katsufumi Isshiki

Takeshi Fukumura

Osamu Kajikawa

Muneki Ohuchi

Mamoru Hatada

Toshiko Kajikawa

Susumu Fujita

Takatomo Fujii

Atsumi Matsumoto

A collectorcapable of collecting and sampling simultaneously various types of chlorinated organic compounds in both particulate and gaseous forms contained in a fluid and easy to extract the sampled chlorinated organic compounds therefrom includes a sampling filterinstalled in a holderhaving a discharge route. The sampling filtercontains fibers and an inorganic binder for binding the fibers to one another and has a fluid-permeability. Various types of the chlorinated organic compounds such as dioxins and coplanar PCBs in both particulate and gaseous forms contained in a sample gas flowing into the holderfrom a flue ductthrough a sampling pipeand an introduction pipeare collected and sampled while the sample gas being passed through the sampling filterand the resulting sample gas from which the chlorinated organic compounds are removed is then discharged out to the outside through the discharge route

Filter for sampling chlorinated organic compound

A collector is provided which is capable of simultaneously capturing and collecting particulate and gaseous chlorinated organic compounds contained in a fluid. The collector includes a housing and a captor disposed within the housing . The captor includes a tubular porous core member of a sintered glass having one end closed with a close member , and a gas-permeable sheet fitted around the core member . The gas-permeable sheet is, for example, a paper-like sheet having a fibrous activated carbon and inorganic fibers. The particulate and gaseous chlorinated organic compounds contained in a gas sample flowing into the captor through a sampling tube are simultaneously collected and removed from the gas sample by the core member and the gas-permeable sheet , and the gas sample free from the chlorinated organic compounds is then discharged from an outlet port

Sampling bottle for chlorinated organic compounds

The invention effectively prevents occurrence of corrosion in water tubes or the like of boilers. The invention provides a method for operating a boiler, including regulating a concentration of sulfate ions SO in boiler water to under 500 ppm, and a method for injecting a sulfite base oxygen scavenger, including setting a concentration of residual dissolved oxygen in boiler feed water to 2-4 ppm. The invention further provides a sulfite base oxygen scavenger composition comprising: 3-30 weight % of at least one selected from a group consisting of Na SO , K SO , NaHSO and KHSO ; 1-20 weight % of NaOH or KOH; 0.2-2 weight % of potassium sorbate; and 5-500 ppm of CoSO .

Composition for preventing corrosion using a sulfite-based oxygen scavenger

A harness indicator is highly reactive to a trace amount of Ca,, and is slow to degrade in a high temperature environment of greater than 50&deg; C. In one embodiment, the hardness indicator contains EBT, a pH buffer, and a masking agent as main components, and an admixture of Mg-EDTA. In another embodiment, the hardness indicator contains EBT, a pH buffer, and a masking agent as main components, and an admixture of anhydrous Mg-EDTA. In another embodiment, the hardness indicator contains EBT, a pH buffer, and a masking agent as main components, and an admixture of anhydrous Mg-EDTA and potassium sorbate. In a further embodiment, the hardness indicator contains EBT, a pH buffer, and a masking agent as main components, and an admixture of Mg-EDTA and potassium sorbate. In a further embodiment, the hardness indicator contains EBT, a pH buffer, and a masking agent as main components, and an admixture of potassium sorbate.

Hardness indicator

The invention effectively prevents occurrence of corrosion in water tubes or the like of boilers. The invention provides a method for operating a boiler, including regulating a concentration of sulfate ions SO.sub.4.sup.2- in boiler water to under 500 ppm, and a method for injecting a sulfite base oxygen scavenger, including setting a concentration of residual dissolved oxygen in boiler feed water to 2-4 ppm. The invention further provides a sulfite base oxygen scavenger composition comprising: 3-30 weight % of at least one selected from a group consisting of Na.sub.2 SO.sub.3, K.sub.2 SO.sub.3, NaHSO.sub.3 and KHSO.sub.3 ; 1-20 weight % of NaOH or KOH; 0.2-2 weight % of potassium sorbate; and 5-500 ppm of CoSO.sub.4.

Method for preventing corrosion using a sulfite-based oxygen scavenger,

A deaeration method for eliminating dissolved gases from a liquid product, which method involves low initial cost and running cost, compact equipment, and simple arrangement to accomplish the deaeration. For the method to eliminate dissolved gases from a liquid product, a deaeration module which is divided by a gas-pervious membrane into a liquid phase side and a vapor phase side is used. A deaeration-use gas composed of one or more kinds of inactive gases is previously dissolved in a liquid product to be deaerated, whereby a deaeration-target liquid is prepared. The deaeration-target liquid is distributed on the liquid phase side, in which distribution process the deaeration-use gas moves to the vapor phase side via the gas-pervious membrane, while the dissolved gases move to the vapor phase side along with the movement of the deaeration-use gas. This movement of the gases is carried out during passage through the deaeration module under ambient pressure.

Method for deaerating liquid products

Growing community of inventors

Matsuyama, Japan

Masazumi Yamashita