Feedwater heater control system for improved Rankine cycle power plant efficiency
US-9316122-B2 · Apr 19, 2016 · US
Boiler water supply preheater system and boiler water supply preheating method
US9857074B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9857074-B2 |
| Application number | US-201615000333-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 19, 2016 |
| Priority date | Jul 26, 2013 |
| Publication date | Jan 2, 2018 |
| Grant date | Jan 2, 2018 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The present disclosure relates to a boiler water supply preheater system which preheats water (boiler water supply) supplied to a boiler by a predetermined preheating means, wherein the preheating means is a Rankine cycle (thermal cycle) which moves heat of a waste heat source in the boiler to the boiler water supply to perform preheating and drives a generator to generate electric power using a heat medium.
First claim
Opening claim text (preview).
The invention claimed is: 1. A boiler water supply preheater system which preheats boiler feed water supplied to a boiler by a predetermined preheating means, wherein the predetermined preheating means is a thermal cycle which moves heat from a fluid that is a waste heat source in the boiler to the boiler feed water with a predetermined heat medium to perform preheating of the boiler feed water and generates electric power with the predetermined heat medium, and the thermal cycle includes a heat exchanger that moves heat from the waste heat source to the predetermined heat medium. 2. The boiler water supply preheater system of claim 1 , wherein the preheating means is equipped with an auxiliary heat exchanger which exchanges heat between the waste heat source and the boiler feed water to preheat the boiler feed water, in addition to the thermal cycle. 3. The boiler water supply preheater system of claim 2 , wherein the waste heat source is drained hot water obtained by using water vapor generated by the boiler as a predetermined application. 4. The boiler water supply preheater system of claim 3 , wherein the predetermined heat medium is a low-boiling-point heat medium having a lower boiling point than water. 5. The boiler water supply preheater system of claim 2 , wherein the predetermined heat medium is a high-boiling-point heat medium having a higher boiling point than water. 6. The boiler water supply preheater system of claim 1 , wherein the waste heat source is drained hot water obtained by using water vapor generated by the boiler as a predetermined application. 7. The boiler water supply preheater system of claim 6 , wherein the predetermined heat medium is a low-boiling-point heat medium having a lower boiling point than water. 8. The boiler water supply preheater system of claim 1 , wherein the predetermined heat medium is a high-boiling-point heat medium having a higher boiling point than water. 9. A method of preheating boiler water supply in which boiler feed water supplied to a boiler is preheated, the method comprising: moving heat from a fluid that is a waste heat source in the boiler to the boiler feed water with a predetermined heat medium using a predetermined thermal cycle which includes a heat exchanger to perform preheating of the boiler feed water, and generating electric power with the predetermined heat medium using the predetermined thermal cycle, and wherein the heat exchanger moves heat from the waste heat source to the predetermined heat medium.
Assignees
Inventors
Classifications
- F22D1/02Primary
with water tubes arranged in the boiler furnaces, fire tubes or flue ways · CPC title
and heated indirectly · CPC title
Feed-water supply not provided for in other main groups · CPC title
arranged to be heated by steam, e.g. bled from turbines · CPC title
- F01K23/04Primary
condensation heat from one cycle heating the fluid in another cycle · CPC title
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Frequently asked questions
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- What does patent US9857074B2 cover?
- The present disclosure relates to a boiler water supply preheater system which preheats water (boiler water supply) supplied to a boiler by a predetermined preheating means, wherein the preheating means is a Rankine cycle (thermal cycle) which moves heat of a waste heat source in the boiler to the boiler water supply to perform preheating and drives a generator to generate electric power using …
- Who is the assignee on this patent?
- Ihi Corp
- What technology area does this patent fall under?
- Primary CPC classification F22D1/02. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Jan 02 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).