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US 12,203,650 B2Granted
Waste heat recovery system and method
AssigneeSamsung E&A Co., Ltd.
InventorsChae Gwan Park, Joeng Min Oh, Tae Jin Park, Jun Ho Seo, Yong Jung Kim
Life of this patent
Estimating the term…
Abstract
A waste heat recovery system and method are disclosed. The waste heat recovery system disclosed herein comprises: a waste heat recovery boiler; a waste heat supply member configured to supply waste heat to the waste heat recovery boiler; and a water tank configured to fluidly communicate with the waste heat supply member.
Claims8
A waste heat recovery system comprising:
- a waste heat recovery boiler;
- a waste heat supply member configured to supply waste heat to the waste heat recovery boiler;
- a water tank configured to be in fluid communication with the waste heat supply member;
- an equalization water tank configured to be in fluid communication with the water tank;
- a water supply pipe, a water drain pipe, and a circulation pipe branched from the water drain pipe, each configured to be in fluid communication with the water tank;
- a first flow control valve installed in the water supply pipe, and a second flow control valve installed in the circulation pipe;
- and
- a water level meter configured to measure a level of liquid filled in the water tank, a pump configured to discharge liquid from the water tank, and a third flow control valve installed at a back-end of the circulation pipe as a back-end of the pump and configured to control a discharge amount of liquid in accordance with a signal of the water level meter,
- wherein the water tank is configured to mix the dusts introduced therein with water to thereby form aqueous solution,
- wherein the waste heat recovery system is configured to maintain a concentration of sodium carbonate in liquid filled in the water tank at a reference value or less,
- wherein the waste heat recovery system is configured to supply water to the water tank from the equalization water tank in accordance with a pressure difference between water pressure of the equalization water tank and liquid pressure of the water tank.
8 more elements
A waste heat recovery method comprising:
- a step (S10) of supplying exhaust gas of a high temperature of 500° C. or more to a duct-shaped waste heat supply member;
- a step (S20) of recovering waste heat by supplying, to a waste heat recovery boiler, a portion of the exhaust gas having passed through the waste heat supply member;
- a step (S30) of supplying, to a water tank, a remaining portion of the exhaust gas having passed through the waste heat supply member;
- a step (S40) of maintaining a concentration of sodium carbonate in a liquid filled in the water tank at a reference value or less;
- a step (S50) of measuring a level of the liquid filled in the water tank;
- and
- a step (S60) of supplying water to the water tank from an equalization water tank in fluid communication with the water tank, in accordance with a pressure difference between a water pressure of the equalization water tank and a liquid pressure of the water tank, in an emergency situation where a large amount of water is instantaneously evaporated, or a large amount of water is drained due to leakage from the water tank,
- wherein the water tank is configured to mix the dusts introduced therein with water to thereby form aqueous solution,
- wherein the step (S40) comprises a step (S40-1) of supplying water to the water tank at a first flowrate, a step (S40-2) of discharging a liquid filled in the water tank at a second flowrate, a step (S40-3) of recirculating a portion of the liquid discharged in the step (S40-2) to the water tank at a third flowrate, and a step (S40-4) of discharging a remaining portion of the liquid discharged in the step (S40-2) out of the water tank at a fourth flowrate, and
- wherein the fourth flowrate in the step (S40-4) is determined according to the level of the liquid in the water tank measured in the step (S50).
7 more elements
Dependencies are inferred from the claim text.