Patent application number | Description | Published |
20100072133 | DEHYDRATING APPARATUS, DEHYDRATION SYSTEM, AND DEHYDRATION METHOD - A dehydrating apparatus, a dehydration system, and a dehydration method have improved membrane performance. The dehydrating apparatus | 03-25-2010 |
20100161136 | CONTROL METHOD AND CONTROL DEVICE OF STEAM SYSTEM - A steam system control method applied to a steam system including: a low-pressure header storing low-pressure steam; a high-pressure header storing high-pressure header; a steam turbine connected between them; and a turbine bypass line introducing controlled amount of steam from the high-pressure header to the low-pressure header by bypassing the steam turbine. The low-pressure header has a blow-off valve for discharging excessive steam to the outside. The steam system control method includes: a normal time blow-off valve control step of PI controlling the opening of the blow-off valve; and a trip time blow-off control step of controlling the opening of the blow-off valve by changing the MV value to a predetermined trip time opening set value when the turbine is tripped. According to this method, the opening of the blow-off valve is controlled based on the predetermined MV value when the turbine trips and excessive steam flows into the bypass, so that excessive steam flows into the low-pressure header is quickly discharged to the outside. Stable operation can be achieved even when a turbine trips. | 06-24-2010 |
20100219128 | DEHYDRATION SYSTEM AND DEHYDRATION METHOD - A dehydration system has improved membrane performance. The dehydration system includes a dehydrating apparatus 1 comprising, in a dehydrating apparatus body, a water separation membrane module in which a water separation membrane having at least one flow path extending in the up and down direction to cause a liquid | 09-02-2010 |
20100258197 | METHOD FOR TRANSPORTING FLUID - There is provided a method for transporting a fluid, in which even if the fluid is transported for a long period of time, dehydration after transportation is not needed, and the transported fluid can be used immediately after transportation. Specifically, there is provided a method for transporting a fluid, comprising steps of: dehydrating some of the transportation fluid during transportation by using a dehydration system comprising a separation membrane through which water permeates, and returning the dehydrated fluid to the transportation fluid so as to keep water content in the transportation fluid in a fixed range. In one embodiment, the transportation fluid is a liquid, and the dehydration system comprises a heater for heating the liquid to a temperature in a range in which the liquid does not boil, and a membrane separation apparatus for dehydrating the heated liquid, wherein the membrane separation apparatus is a PV method apparatus comprising a primary side chamber extending in an up and down direction to introduce the liquid from a lower portion thereof and discharge it from an upper portion thereof, a separation membrane in contact with the primary side chamber to allow water in the liquid to permeate through as a gas, and a secondary side chamber being located on the opposite side to the primary side chamber with the separation membrane held therebetween and being under a pressure lower than that in the primary side chamber. | 10-14-2010 |
20100320148 | DEHYDRATING SYSTEM AND DEHYDRATING METHOD - A dehydrating system using multiple water separation membranes aims to prevent damage to the water separation membrane units and also to take appropriate measures against decrease in water permeation rate of the water separation membranes. Provided is a dehydrating system ( | 12-23-2010 |
Patent application number | Description | Published |
20090288414 | STEAM SYSTEM, CONTROL SYSTEM THEREOF AND CONTROL METHOD THEREOF - In a steam system having a turbine driven by steam supplied from a high-pressure header to a low-pressure header, when the pressure in the low-pressure header drops, a turbine bypass valve is opened and the high-pressure side steam is supplied to the low-pressure side header in a normal control. When the turbine is tripped, steam is rapidly flow into the low-pressure side header and its pressure temporally increases. the steam in the low-pressure header is discharged through a discharge valve. After that, if a steam supply from the low-pressure header to another process increases, the discharge valve is closed. After the discharge valve is fully closed, an after-trip control is performed in which the opening of the turbine bypass valve is increased at an earlier timing than the normal control for preventing the steam amount in the low-pressure header to be too small. The control stability of the steam system when the turbine is tripped can be enhanced. | 11-26-2009 |
20100116727 | MEMBRANE CONTAINER - Modularized water separating membranes in a plural number of units are provided. A membrane container used in a dehydration system for separating water from treated fluid includes a shell part | 05-13-2010 |
20100288682 | DEHYDRATING SYSTEM - A dehydrating system is designed to maintain the availability of a plant having the dehydrating system using a water separation membrane by allowing a water separation membrane unit to be replaced while the plant is in operation. The dehydrating system comprises at least two water separation membrane units in use arranged parallel to the direction of flow of a fluid to be processed, is configured so that at least one spare water separation membrane unit can be installed parallel to the direction of flow of the fluid to be processed with respect to the at least two water separation membrane units, having monitoring devices for the product fluid to be taken out, and maintains the properties of the product fluid by operating the spare water separation membrane unit depending on the properties of the product fluid monitored by the monitoring devices. | 11-18-2010 |