CN210151027U

CN210151027U - Dry quenching sewage heating and recycling device

Info

Publication number: CN210151027U
Application number: CN201920747669.5U
Authority: CN
Inventors: 李伟; 郭青龙; 郑仁勇; 朱玉倩
Original assignee: Lin Huan Coking Limited-Liability Co
Current assignee: Lin Huan Coking Limited-Liability Co; Linhuan Coking and Chemical Co Ltd
Priority date: 2019-05-23
Filing date: 2019-05-23
Publication date: 2020-03-17
Anticipated expiration: 2029-05-23

Abstract

The utility model discloses a dry quenching blowdown heating recycle device belongs to the coker field, including dry quenching stove, steam conduit, row sewage pipeline, dredge pump, blowoff well and blowdown expander, dry quenching stove top sets up the water seal groove, and steam conduit's one end and water seal groove are connected, and the other end is connected with the blowdown expander, and the blowdown expander passes through pipeline and blowoff well intercommunication, and the dredge pump setting is in the blowoff well, and the blowoff pipeline is connected with the dredge pump. The utility model discloses a coke dry quenching sewage heating recycle device recycle coke dry quenching boiler blow off water, periodic blowdown expander steam, avoid extravagant, reach energy saving and emission reduction's purpose, accord with the operation theory of recycling economy at present.

Description

Dry quenching sewage heating and recycling device

Technical Field

The utility model relates to a coker field, specifically speaking, the utility model relates to a dry coke quenching blow off water heating recycle device.

Background

The quality of the feed water of the coke dry quenching boiler is one of important factors influencing the safe, stable and economic operation of a steam-water system of the boiler. During the operation of the boiler, a steam-water system of the dry quenching boiler can generate a certain amount of salt and impurities, and the heat exchange, the pipeline blockage or the boiler generation of a false water level can be influenced. Thus, dry quenching boilers use blowdown systems to discharge "waste". The sewage discharge system is divided into two parts of continuous sewage discharge and periodic sewage discharge: the continuous blowdown is to continuously discharge water with higher salt content in the boiler steam drum into the continuous blowdown expander so as to ensure that the salt content in the boiler is controlled within a normal range; the periodic blowdown is to periodically discharge impurities and water slag inside the boiler into the periodic blowdown expander to avoid scaling or blockage of the pipeline.

The dry quenching boiler feed water is supplemented with demineralized water, and the steam generated by the boiler is generally used for a steam turbine generator unit. According to the design specification (GB 50049-2011) requirement of a small-sized thermal power plant, the dry quenching boiler pollution discharge rate is not more than 2%. Except for secondary steam recovery, the rest of the sewage is discharged into a sewage well through a sewage expander and is discharged outside after being cooled. The indexes of hardness and the like of boiler sewage are superior to those of industrial water and circulating water, the temperature is high, and direct discharge is uneconomical. Taking a dry quenching boiler with rated evaporation capacity of 100t/h as an example, the discharge water quantity of the boiler is 2t/h and is more than 80 ℃, and the direct discharge is a great waste of water resources. Therefore, the recycling of the blow-off water of the coke dry quenching boiler is imperative.

Disclosure of Invention

The utility model aims to solve the technical problem that a heating recycling device for coke dry quenching sewage is provided, which can recycle the heat in the waste water.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the utility model provides a dry quenching blowdown sewage heating recycle device, includes dry quenching stove, steam conduit, blowdown pipeline, dredge pump, blowdown well and blowdown expander, dry quenching stove top sets up the water-sealed tank, and steam conduit's one end is connected with the water-sealed tank, and the other end is connected with the blowdown expander, and the blowdown expander passes through pipeline and blowdown well intercommunication, the dredge pump sets up in the blowdown well, and the blowdown pipeline is connected with the dredge pump.

Adopt the technical scheme of the utility model, can obtain following beneficial effect:

the utility model discloses a coke dry quenching sewage heating recycle device recycle coke dry quenching boiler blow off water, periodic blowdown expander steam, avoid extravagant, reach energy saving and emission reduction's purpose, accord with the operation theory of recycling economy at present.

Drawings

The contents of the description and the references in the drawings are briefly described as follows:

FIG. 1 is a schematic structural view of the apparatus;

the labels in the above figures are: 1. a blowdown expander; 2. a sewage draining well; 3. a sewage pump; 4. a steam line; 5. a sewage drain conduit; 6. dry quenching the coke oven; 7. and (5) sealing the tank with water.

Detailed Description

The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings, in which the shapes, structures, mutual positions and connection relationships of the respective members, the functions of the respective portions, the operation principles, and the like of the respective members are described.

As shown in figure 1, sewage in the sewage well 2 is pressurized and conveyed into a water seal tank 7 of the dry quenching furnace by using a sewage pump 3, and the sewage pump 3 adopts an external flushing structure to prevent water slag in the sewage from being conveyed into the water seal tank 7. And interlocking the sewage discharge water level with the sewage discharge pump 3 and controlling the water level of the water seal tank 7 of the dry quenching furnace. The pipeline heater is arranged on the sewage discharge pipeline 5, when the sewage discharge pump 3 runs, the steam of the boiler periodic sewage discharge expander 1 is utilized to heat the sewage, and the sewage is heated to about 85 ℃ and then is sent to the dry quenching furnace water seal tank 7. When the blow-down pump 3 stops operating, the steam of the periodic blow-down expander 1 is diffused.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without modification to the method and technical solution of the present invention, or the present invention can be directly applied to other occasions without modification, all within the scope of the present invention.

Claims

1. The utility model provides a dry coke quenching sewage heating recycle device which characterized in that: the dry quenching furnace comprises a dry quenching furnace, a steam pipeline, a sewage discharge pump, a sewage discharge well and a sewage discharge expander, wherein a water seal tank is arranged at the top of the dry quenching furnace, one end of the steam pipeline is connected with the water seal tank, the other end of the steam pipeline is connected with the sewage discharge expander, the sewage discharge expander is communicated with the sewage discharge well through a pipeline, the sewage discharge pump is arranged in the sewage discharge well, and the sewage discharge pipeline is connected with the sewage discharge pump.