CN205532741U - System for one set of generating set electricity generation of two coke oven steam raising sharings - Google Patents

Abstract

The utility model relates to a system for one set of generating set electricity generation of two coke oven steam raising sharings connects the end -to -end connection steam turbine power generation unit of steam trunk line, steam trunk line after 1# dry coke quenching steam conduit and 2# dry coke quenching steam conduit join, the steam trunk line connects gradually temperature and pressure reduction ware and gas -distributing cylinder through the steam branch road in addition, establishing valve no. 1 and valve no. 2 respectively on 1# dry coke quenching steam conduit before the steam trunk line and the 2# dry coke quenching steam conduit, establishing valve no. 3 on the steam trunk line behind the steam branch road, the steam that is close to the steam trunk line props up establishes valve no. 4 on the road, steam between temperature and pressure reduction ware and the gas -distributing cylinder props up establishes valve no. 5 on the road, factory's pipe network is connected in addition to the gas -distributing cylinder. The utility model discloses a make full use of of resource makes generating set can reach electricity generation at full capacity, have the characteristics that the equipment investment is few, area is little simultaneously, in two coke ovens one when overhauing, can not cause generating set to stop the moving condition.

Description

A system in which two coke ovens generate steam and share a generator set to generate electricity

technical field

The utility model relates to the technical field of waste heat utilization of industrial coke ovens, in particular to a system in which two coke ovens generate steam and share a set of generator sets to generate electricity.

Background technique

The steam turbine generator set uses a steam turbine to drive a generator. The superheated steam enters the steam turbine and expands to do work, turning the blades to drive the generator to generate electricity.

The coke produced from the coke oven has a temperature of about 1000°C and is called red coke. In order to prevent burning and facilitate storage and transportation, the red coke must be extinguished as soon as possible, and its temperature should be lowered to below 250°C. This process is coke quenching.

A large amount of steam generated during CDQ is usually recovered and used to generate electricity. At present, in actual industrial production, one set of coke oven corresponds to one set of generator sets is generally used, but this method will cause waste of resources, space, and funds, and when the coke oven is shut down for maintenance, the generator set will also be affected by it. The corresponding shutdown will affect the stability of the power grid and cause certain economic losses.

Contents of the invention

The utility model provides a system in which two coke ovens generate steam and share a set of generating sets to generate electricity, which realizes full utilization of resources and enables the generating sets to generate electricity at full load; meanwhile, it has the characteristics of less equipment investment and a small occupied area , when one of the two coke ovens is overhauled, it will not cause the generator set to stop running.

In order to achieve the above object, the utility model adopts the following technical solutions to realize:

The steam generated by two coke ovens shares a generator set to generate electricity. The 1# dry quenching steam pipeline and the 2# CDQ steam pipeline are connected to the main steam pipeline after the confluence, and the end of the main steam pipeline is connected to the steam turbine generator set; the main steam pipeline In addition, the temperature and pressure reducer and the sub-cylinder are connected in turn through the steam branch; the 1# CDQ steam pipeline and the 2# CDQ steam pipeline in front of the steam main pipeline are respectively equipped with valve 1 and valve 2, and the steam pipeline behind the steam branch Valve three is set on the main steam pipeline, and valve four is set on the steam branch road close to the main steam pipeline; valve five is set on the steam branch road between the desuperheater and the sub-cylinder; the sub-cylinder is also connected to the plant pipe network.

A steam filter is arranged on the main steam pipeline before the steam turbine.

Compared with the prior art, the beneficial effects of the utility model are:

1) Make full use of the steam generated by the two coke ovens to realize the full-load power generation of the generator set and realize the full utilization of resources;

2) Small footprint, reliable performance and outstanding benefits;

3) When one of the two coke ovens is overhauled, the generator set can generate electricity at half load without shutting down, which solves the problem of energy waste; the operation mode is more flexible.

Description of drawings

Fig. 1 is a structural representation of the utility model.

In the figure: 1. Valve 1 2. Valve 2 3. Valve 3 4. Valve 4 5. Temperature reducer 6. Sub cylinder 7. Steam filter 8. Steam turbine 9. Generator 10. Valve 5

detailed description

The specific embodiment of the utility model will be further described below in conjunction with accompanying drawing:

As shown in Figure 1, the two coke ovens share a set of power generating system for generating steam. The 1# CDQ steam pipeline and the 2# CDQ steam pipeline are connected to the main steam pipeline after being merged, and the end of the main steam pipeline is connected to the steam turbine. Generator set; the steam main pipeline is connected to the desuperheater 5 and sub-cylinder 6 in turn through the steam branch; the 1# CDQ steam pipeline and the 2# CDQ steam pipeline in front of the steam main pipeline are respectively equipped with valves 1 And valve two 2, valve three 3 is set on the main steam pipeline behind the steam branch, valve four 4 is set on the steam branch near the steam main pipeline; valve five is set on the steam branch between the desuperheater 5 and the sub-cylinder 6 10; The sub-cylinder 6 is additionally connected to the pipe network in the factory area.

A steam filter 7 is arranged on the main steam pipeline before the steam turbine 8 .

The operation method of the system that uses two coke ovens described in the utility model to generate steam and share a set of generating sets to generate electricity is as follows:

Before using steam to generate electricity, valves 1 to 4, 1, 2, 3, and 4 are all closed, and valve 5 and 10 are normally open; The pipeline is warmed. During the warming period, the valve 44 is opened, and the steam of the warming pipe is sent to the desuperheater 5 and sub-cylinder 6 in sequence through the steam branch, and finally merged into the pipe network of the factory area;

After the heating pipe temperature of the 1# CDQ steam pipeline reaches above 320°C, fully open valve 1, and open valve 3 3, and the 1# CDQ steam is sent into the steam turbine 8 at the same time, and the steam turbine 8 starts to run, wait for the steam turbine 8 to turn When the speed reaches more than 3000r/min, the generator 9 is driven to supply power to the outside and connect to the grid;

After the state of grid-connected power generation is stable, slowly open valve 2 2, and at the same time slowly close valve 4 4, observe the vibration and parameter changes of steam turbine 8 and generator 9, adjust the state of the generator set to the best, fully open valve 2 2, Complete the operation process of simultaneous recovery of 1# CDQ steam and 2# CDQ steam for power generation of the same generator set, and make the power generation reach full load.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. The equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (2)

1. A system in which two coke ovens generate steam and share a set of generator sets for power generation. It is characterized in that the 1# CDQ steam pipeline and the 2# CDQ steam pipeline are connected to the main steam pipeline after being merged, and the end of the main steam pipeline is connected to the steam turbine. Generator set; the steam main pipeline is connected to the desuperheater and sub-cylinder in turn through the steam branch; the 1# CDQ steam pipeline and the 2# CDQ steam pipeline in front of the steam main pipeline are respectively equipped with valve 1 and valve 2 , valve three is set on the main steam pipeline behind the steam branch, and valve four is set on the steam branch close to the main steam pipeline; valve five is set on the steam branch between the desuperheater and the sub-cylinder; the sub-cylinder is also connected to the plant pipe network . 2. The system for generating steam generated by two coke ovens according to claim 1, characterized in that a steam filter is provided on the main steam pipeline in front of the steam turbine.