Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Thermal system for sludge incineration

A thermal system and sludge incineration technology, applied in the directions of preheating, incinerators, combustion methods, etc., can solve problems such as hidden dangers of boiler safety, oxygen corrosion of thermal system equipment and pipelines, cracked pipelines, etc., to improve stability and reliability. performance, continuous production capacity improvement, and the effect of increasing the diameter of the water inlet pipe

Pending Publication Date: 2020-09-18
CHENGDU DRAINAGE CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the existing thermal system, the deaerator uses steam for thermal deoxygenation, which belongs to the core equipment of the whole plant. Once a failure occurs, the water quality will exceed the standard, which will cause great safety hazards to the thermal system equipment and pipelines. The deaerator in our factory It belongs to the atmospheric deaerator, and the following two faults occurred at the initial stage of commissioning:
[0003] A. Oxygen corrosion problem: The operating parameters of the deaerator cannot be maintained at the rated working condition (20KPa, 104°C), and the deoxygenation effect cannot be achieved, resulting in oxygen corrosion of thermal system equipment and pipelines;
[0004] B. Supporting design problems: The deaerator supporting facilities do not meet the actual operating conditions, frequent failures, frequent shutdowns, and the entire plant cannot maintain continuous and safe production
[0005] The main function of the feed water pump in the thermal system is to transport the water in the condensate tank to the boiler for use. This equipment belongs to the core equipment of our factory. Once a failure occurs, it will cause the entire plant to stop production and cause a large safety hazard in the boiler.
The existing problem is that the position of the original design feedwater pump is only about 1 meter away from the water surface of the condensate tank. During commissioning and operation, the feedwater pump frequently has cavitation failures, which leads to water shortage in the boiler and shutdown of the whole plant.
The current problems are: due to the large amount of return water from the air cooler, if the water returns to the soft water tank, the condensate tank needs to be replenished frequently, which increases the running time of the equipment and consumes a lot of energy; The pressure is lower than that of the condensate tank, and the return water will vibrate greatly in the condensate tank, which may tear the pipe

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Thermal system for sludge incineration
  • Thermal system for sludge incineration
  • Thermal system for sludge incineration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In this embodiment, a thermal system for sludge incineration is provided to modify the operation of the deaerator 7 in the thermal system. On the one hand, it is the modification of the problem of oxygen corrosion. The deaerator 7 is running under the design working condition. The two design working condition parameters of the deaerator 7, pressure and temperature, are a pair of related data, that is, the pressure cannot reach 20KPa, and the temperature must not reach 104°C. Therefore, as long as the pressure problem is solved, the can completely solve the problem.

[0039] In order to ensure that the pressure of the deaerator 7 is stable at 20KPa, the temperature is also stable at 104°C, as figure 2 As shown, the adopted scheme is as follows: including a water seal device, the water seal device is provided with a water seal chamber 1, the water seal chamber 1 is set as a T-shaped cavity, the water seal chamber 1 and the steam exhaust pipe of the deaerator 7 6, the st...

Embodiment 2

[0047] In the thermal system, the outlet of the deaerator 7 sends deoxygenated water to the condensate tank 8 through the feed water pump 10. Due to factors such as unreasonable location and small pipe diameter of the feed water pump 10, when the temperature of the deaerator 7 rises, Cavitation occurs in the feed water pump 10, and the deoxygenated water cannot be transported to the condensed water tank 8, resulting in frequent production shutdowns due to subsequent inability to replenish water.

[0048] On the basis of Example 1, in order to further improve the operational stability of the feed water pump 10 of the thermal system, to optimize the thermal system of sludge incineration, such as Figure 4 As shown, adopt the following technical scheme:

[0049] The outlet of the deaerator 7 is connected with a DN65 pipeline, and the DN65 pipeline is connected in parallel with 5 roads of water replenishment pipes, and each water replenishment pipe 5 is provided with a feedwater p...

Embodiment 3

[0052] The condensed water at the outlet of the air condenser 11 is low-temperature water, which cannot directly enter the pressurized condensed water tank 8. In order to make the air condenser 11 return water to the condensed water tank 8, it has a better energy-saving effect. On the basis of Example 2, in order to further improve the return water problem of the air condenser 11 of the thermal system, to optimize the thermal system of sludge incineration, such as Figure 5 , Image 6 As shown, adopt the following technical scheme:

[0053] Such as Figure 5 As shown, the steam header 9 is connected with an air condenser 11, the air condenser 11 is connected to the condensed water tank 8 through the return water pipeline, and the power drainage pump device 12 is arranged on the return water pipeline, and the return water is drained by the power drainage pump device 12. Return to the condensate tank 8 after pressurization, and the power drainage pump device 12 converts the in...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a thermal system for sludge incineration, belongs to the technical field of sludge incineration, and relates to the optimization and transformation and the stable production ofthe thermal system. The thermal system comprises a deaerator, a condensate tank and a steam header, and also comprises a water sealing device; the water sealing device is internally provided with a water sealing cavity, the water sealing cavity communicates with a steam exhaust pipe of the deaerator, and is also connected with a steam evacuation pipe and a water supplement pipe, and the steam evacuation pipe is provided with a regulating valve; the water sealing device also comprises a soft water tank; and the water sealing cavity is filled with soft water through the water supplement pipe, and the soft water in the water sealing cavity communicates with soft water in the soft water tank through a balance pipeline. The thermal system greatly increases the stability of the system, so thatcontinuous production capacity is significantly improved, and thus the purposes of increasing production and improving efficiency are achieved.

Description

technical field [0001] The invention belongs to the technical field of sludge incineration and relates to thermal system optimization and transformation and stable production, in particular to a thermal system for sludge incineration. Background technique [0002] In the existing thermal system, the deaerator uses steam for thermal deoxygenation, which belongs to the core equipment of the whole plant. Once a failure occurs, the water quality will exceed the standard, which will cause great safety hazards to the thermal system equipment and pipelines. The deaerator in our factory It belongs to the atmospheric deaerator, and the following two faults occurred at the initial stage of commissioning: [0003] A. Oxygen corrosion problem: The operating parameters of the deaerator cannot be maintained at the rated working condition (20KPa, 104°C), and the deoxygenation effect cannot be achieved, resulting in oxygen corrosion of thermal system equipment and pipelines; [0004] B. Su...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F22D1/50F22D1/34F23G7/00
CPCF22D1/34F22D1/50F23G7/001F23G2209/12
Inventor 陈轲袁晓寒杨睿
Owner CHENGDU DRAINAGE CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products