초록 ▼

The membrane deaerator according to the present invention includes a plurality of membrane deaerator modules and a water sealed vacuum pump connected thereto. These modules are series-connected between a raw water supply line and a deaeration water supply line. A first vacuum pump is connected to a

The membrane deaerator according to the present invention includes a plurality of membrane deaerator modules and a water sealed vacuum pump connected thereto. These modules are series-connected between a raw water supply line and a deaeration water supply line. A first vacuum pump is connected to a first deaerator module via a deaeration line, and a second vacuum pump is connected to a second deaerator module via the deaeration line. These vacuum pumps are each provided with a seal water supply line which is used to send the raw water introduced from the water supply line thereinto as seal water to each of the first and second vacuum pumps. A discharge line for the second vacuum pump is connected to the deaeration line for the first vacuum pump. In the membrane deaerator thus formed, the deaeration performance is improved greatly, and a deaeration with dissolved oxygen concentration of several PPB can be carried out.

대표청구항 ▼

A membrane deaerator having a plurality of deaerator modules connected between a supply line for raw water and a supply line for deaeration water, comprising: a first deaerator module connected to said supply line for raw water and located at a preceding stage; a second deaerator module connected to

A membrane deaerator having a plurality of deaerator modules connected between a supply line for raw water and a supply line for deaeration water, comprising: a first deaerator module connected to said supply line for raw water and located at a preceding stage; a second deaerator module connected to said supply line for deaerating water and located at a succeeding stage and series-connected to the first deaerator module; a first vacuum pump connected to the first deaerator module via a first deaerator line; a second vacuum pump connected to the second deaerator module via a second deaeration line; a discharge line for the second vacuum pump connected to the first deaeration line for the first vacuum pump so that discharge water from the second vacuum pump passes through the first vacuum pump and flows out through a discharge line thereof; a plurality of seal water recirculation lines for circulating seal water through said first and second vacuum pumps, said seal water recirculation lines including a seal water supply line connected to each of the first and second vacuum pumps, and a seal water return line connected to the discharge line of the first vacuum pump; a water reservoir connected to the seal water supply line and the seal water return line; and a reservoir water supply line for introducing deaerated water into said water reservoir which has passed through at least said first deaerator module.