What are the discharge methods for industrial boilers?
Industrial boilers will produce wastes that needs to be treated during the use process, which is what we mentioned of boiler blowdown. What are the methods for boiler blowdown?
1. Regularblowdown
1) The time interval and quantity of discharge depend on the test results of boiler water. It usually do not exceed 5% of the water supply.
2) When the regular blowdown is being made under high load of the boiler, the blowdown of the water-cooled wall header is generally not required to avoid affecting the normal water circulation of the water-cooled wall and forming a tube explosion incident.
2. Continuous blowdown
The amount of blowdown shall be determined according to the test results of the boiler water, and shall be completed by adjusting the needle-shaped angle of the blowdown tube. The sewage can be flowed into the pressure expansion tank so that the secondary steam generated due to the pressure drop can be reused meanwhile the wasted water is discharged from the expansion tank, in order to improve the thermal efficiency.
-
SZS series gas-fired (oil-fired) steam boilerLive Chat2-110 t/h1.25-5.3 MPa
-
SZS series gas-fired (oil-fired) hot water boilerLive Chat7-116 MW1-1.6 MPa
-
WNS series gas-fired (oil-fired) steam boilerLive Chat1-20 t/h0.7-2 MPa
-
Email us
-
WhatsApp: +86 18861589035
WeChat: +86 13506150756
Live Chat
-
In the industrial zone of Wen’an County, Xinghua Cable Co., Ltd. is making steady progress on its project with an annual production capacity of 11 million meters of wires, cables, and accessories, backed by an investment of RMB 520 million. Upon completion, the project is expected to create over 150 jobs and generate annual sales revenue of RMB 800 million, demonstrating promising prospects. As a key supplier of thermal energy equipment, ZOZEN Boiler is quietly supporting the development o...22 Jul 2025
-
On March 20, 2025, the Guizhou Jinyuan Zhijin “Replacing Small Units with Large Ones” Relocation Project (2×660 MW), under State Power Investment Corporation, successfully achieved the first ignition of its boiler. This project replaced traditional oil-fired ignition fuel with liquefied natural gas (LNG), setting a new precedent for employing clean energy in 660 MW ultra-supercritical “W” flame boilers. As a key equipment supplier for this project, ZOZEN Boiler prov...15 Jul 2025
-
Under the Belt and Road Initiative, economic and cultural ties between China and Pakistan are growing ever stronger, with more frequent exchanges between businesses from both countries. Recently, ZOZEN Boiler’s Sales Director led a team to visit Pakistan, where they held a meaningful meeting with Kohinoor Mills, a leading local textile company. During the gathering, both sides exchanged honorary plaques and thoughtful gifts—gestures that not only celebrate past collaborations but als...08 Jul 2025
Find the Right Boiler For You
-
2025.07.24
25-Ton ZOZEN Reciprocating Grate Biomass Boiler Empowers Green and Efficient Paper Mill Production
-
2025.06.27
New Look – ZOZEN SZL Series Biomass Steam Boiler Fully Upgraded and Launched
-
2025.06.30
ZOZEN Biomass Boiler—Efficient & Clean Heat Source for Traditional Industries Like Xuan Paper Production