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1. 发明专利

JPH11179229A METHOD OF WASHING TREATMENT OF OIL-CONTAMINATED SAND AND DEVICE THEREFOR 失效
公开(公告)号：JPH11179229A
公开(公告)日：1999-07-06
申请号：JP35378197
申请日：1997-12-22
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： SHIMIZU MASARU , KUMAMOTO NOBUMASA
IPC分类号： E01H12/00 , B03B5/00
摘要： PROBLEM TO BE SOLVED: To easily wash oil-contaminated sand at a low cost. SOLUTION: In this washing treatment method, a surfactant and washing water are added to and mixed with oil-contaminated sand, and after the mixture is agitated under heated conditions, it is left standing in a sedimentation tank 12 to separate it into sand, water, and oil, each of which is recovered. Warm water is used as the washing water, and steam is blown into the mixture to heat it. The recovered water is further treated to circulate and reuse it as the washing water. This washing treatment device is provided with a mixer 1 for agitating and mixing the contaminated sand, the surfactant, and the washing water, a heating means for heating the mixture, and the sedimentation tank 12 for leaving the mixture discharged from the mixer standing to separate it into sand, water, and oil. As the heating means, boilers 5 and a heated water tank 6 for making the washing water warm water are used. Steam is blown into the mixer. A water treating device 18 for further treating the recovered water is provided. To the mixer, a concrete mixer truck is diverted.

2. 发明专利

JPH11137906A OIL DESALTING METHOD AND DEVICE 失效
公开(公告)号：JPH11137906A
公开(公告)日：1999-05-25
申请号：JP31381897
申请日：1997-11-14
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： ASADA MOTOYUKI , SHIMIZU MASARU , IWABUCHI MASAKAZU
IPC分类号： B01D17/00 , B01D17/038 , C02F11/00 , C10G31/08
摘要： PROBLEM TO BE SOLVED: To remove salt content from a large quantity of oil of high salt concentration to use it as fuel oil. SOLUTION: This oil desalting method comprises a process in which water is added to and mixed with oil to be treated containing salt in high concentration and the mixture is agitated to wash out salt content in the oil (a process by a static mixer 3), a process in which an emulsion breaker is added to and mixed whit the agitated mixture after the previous process to break the oil/ water emulsion (a process by a heater mixer 4), and a process in which oil and water are separated by an oily water separator (an centrifugal separation decanter 5) after the previous process.

3. 发明专利

JPH07155561A FRESH WATER GENERATING TUBE 失效
公开(公告)号：JPH07155561A
公开(公告)日：1995-06-20
申请号：JP30687693
申请日：1993-12-07
申请人： SHIMIZU CONSTRUCTION CO LTD , KUBOTA KK , JAPAN GORE TEX INC
发明人： SHIMIZU MASARU , OTSUKA YOSHIYUKI , HIRAGA YOSHIHIKO , TANIGAWA ATSUSHI , KOBAYASHI MASAYUKI
IPC分类号： A01G25/00 , A01G25/06 , B01D1/04 , B01D61/36 , C02F1/04 , C02F1/14
摘要： PURPOSE:To provide a fresh water generating tube which is applied to a fresh water generator for converting raw water such as seawater into fresh water, capable of obtaining excellent water generating efficiency and capable of being continuously operated. CONSTITUTION:A tube 21 for raw water 12 and a tube 22 for cooling water 17 are made of a material impermeable to liq. and permeable to vapor, bundled and housed in an outer tube 23. Raw water 15 heated and passed the raw water tube, cooling water colder than the heated raw water is passed through the cooling water tube to keep the surroundings at low temp., hence the vapor passed through the raw water tube is rapidly condensed to produce fresh water, and the fresh water is discharged from an outlet 24 formed in the periphery of the outer tube.

4. 发明专利

JPH02259365A SOLAR POND SYSTEM 失效
公开(公告)号：JPH02259365A
公开(公告)日：1990-10-22
申请号：JP8124989
申请日：1989-03-31
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： HARADA TORU , SASAKI SEIKI , SHIMIZU MASARU
IPC分类号： F24J2/00
摘要： PURPOSE:To remarkably increase the thermal efficiency for stably supplying energy by a method wherein two or more heat storage bodies composed of a material having a high heat capacity are arranged on the bottom inside a pond to form a heat storage layer on the bottom inside the pond. CONSTITUTION:When a desalination plant is built in an area near a sea coast 1, for example, a pond 2 having a depth of about 2 meter is built, and two or more heat storage bodies 3 are arranged on the bottom inside the pond 2 to form a heat storage layer 4 on the bottom inside the pond 2. An evaporator 5 by which seawater is evaporated, a condenser 6 by which steam generated by the evaporator 5 is cooled and condensed, and a fresh water reservoir 7 where fresh water condensed by the condenser 6 is stored are installed in an area adjacent to the pond 2. Thus, since the heat storage layer 4 composed of the heat storage bodies 3 having a high heat capacity is formed on the bottom inside the pond 2, the heat storage efficiency is remarkably increased and necessary energy can be stably supplied.

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