CN214654670U - Delayed coking coke tower heat control device - Google Patents
Delayed coking coke tower heat control device Download PDFInfo
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- CN214654670U CN214654670U CN201721881110.9U CN201721881110U CN214654670U CN 214654670 U CN214654670 U CN 214654670U CN 201721881110 U CN201721881110 U CN 201721881110U CN 214654670 U CN214654670 U CN 214654670U
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- tower
- coke
- emptying
- temperature reduction
- delayed coking
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Abstract
The utility model relates to a heat control device of a delayed coking coke tower, which comprises two coke towers, a heating device, a heat exchange device and an emptying tower, and is characterized in that the bottom of the coke tower is provided with the heating device, and steam is heated into superheated steam by the heating device; a pipeline from the top of the coke tower to the emptying tower is provided with a temperature reduction device, and high-temperature steam from the top of the coke tower enters the emptying tower after being subjected to temperature reduction by the temperature reduction device. Compared with the existing working condition of coke tower production, the heat of the coke tower is accurately controlled, the heat balance and the material balance of the device system are stabilized, and the periodic fluctuation of the device is reduced; the liquid recovery of the device is improved, the control precision of the product quality is improved, the service life of the coke tower is prolonged, the coking rate of the heating furnace tube is reduced, the preheating time of the coke tower is shortened, oil throwing is avoided, the quality of needle coke of the needle coke production delayed coking device is improved, and the blockage of an air cooler and a cooler on the top of the emptying tower is avoided.
Description
Technical Field
The utility model relates to a petrochemical technical field, concretely relates to device of delayed coking coke tower heat control.
Background
In the prior delayed coking device in the petrochemical industry, a spherical ring valve at the top of a new tower is opened to preheat the wall of the new tower to about 330 ℃ after high-temperature oil gas of a production tower flows to the bottom of the new tower from the top of the new tower for heat exchange and liquefaction, and enters a throwing oil tank to preheat the wall of the new tower, and the temperature in the preheated coke tower is distributed in a high-low mode.
The preheating process of the coke tower without the coke valve needs about 6 hours, the new tower is preheated to about 330 ℃ by high-temperature oil gas of the production tower, the environment temperature of the new tower is about 330 ℃, the heat required to be absorbed during residual oil thermal cracking cannot be met, and the residual oil thermal cracking reaction is insufficient; therefore, the material balance and the heat balance of the whole system before and after the coke tower is cut are damaged, the periodic fluctuation of the device system is caused, the operation difficulty of the device is increased, the liquid recovery is reduced, the control precision of the product quality is reduced, the heat loss is large, and the coking rate of the heating furnace tube is increased.
For a delayed coking device for producing needle coke, the reaction time of reaction materials in a coke tower needs 6 hours, and after the coke tower is cut, the reaction materials in an old tower can not ensure normal reaction temperature in the reaction time, so that the product quality is unqualified.
When the coke drum supplies steam greatly, steam entering the emptying tower from the coke drum carries a large amount of heat and dirty oil, and an air cooler and a cooler on the top of the emptying tower are easily blocked.
Disclosure of Invention
The utility model aims to overcome prior art's defect, the coke drum heat controlling means that provides to guarantee the heat balance and the material balance of system, improve product quality, energy saving and consumption reduction, improve liquid and receive, optimize device system technology operation, and can avoid the blockage of emptying tower top air cooler and cooler.
In order to realize the purpose, the utility model comprises two coke towers, a heating device, a temperature reduction device and an emptying tower, and is characterized in that the bottom of the coke tower is provided with the heating device, steam is heated into superheated steam by the heating device, and the superheated steam enters the coke tower to provide the required heat for the coke tower; a pipeline from the top of the coke tower to the emptying tower is provided with a temperature reduction device, and high-temperature steam from the top of the coke tower enters the emptying tower after being subjected to temperature reduction by the temperature reduction device.
The heating equipment comprises electric heating equipment and gas heating equipment.
The temperature reduction equipment comprises heat exchange temperature reduction equipment and water injection temperature reduction equipment.
The heating equipment and the temperature reducing equipment are provided with a remote transmission control system.
Compared with the existing working condition of coke tower production, the utility model adopts the heat outside the delayed coking device production system to accurately control the heat balance of the coke tower, thereby stabilizing the heat balance and material balance of the device system and reducing the periodic fluctuation of the device; the liquid yield of the device is improved, the control precision of the product quality is improved, the coking rate of the heating furnace tube is reduced, and the preheating time of the coke tower is shortened; the formation of oil throwing (oil generated by preheating a new tower) is reduced or avoided, the electricity (steam) consumption of a pump is saved, the quality of needle coke of the delayed coking device for producing the needle coke is ensured, the blockage of an air cooler and a cooler at the top of an emptying tower is avoided, and a plurality of defects caused by intermittent production of a coke tower of the delayed coking device are optimized.
Drawings
FIG. 1 is a schematic diagram of a delayed coking coke drum heat control apparatus according to an embodiment of the present invention;
referring to fig. 1, 1 is a heating apparatus; 2 is a coke drum; 3 is a temperature reducing device; 4 is a pressure control valve; 5 is an emptying tower.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, as an embodiment, a heating device 1 is arranged at the bottom of two coke drums 2, steam is heated into superheated steam by the heating device 1, the superheated steam enters the coke drum to preheat the coke drum, the coke drum is preheated to a required temperature according to a temperature rise curve, during the preheating process of the coke drum, the steam pressure in a closed loop is controlled not to exceed the design allowable pressure of the coke drum, and the maximum preheating temperature does not exceed the design allowable temperature of the coke drum; and a pipeline from the top of the coke tower to the emptying tower is provided with a temperature reduction device 3, and high-temperature steam discharged from the top of the coke tower is cooled by the temperature reduction device 3 and then enters the emptying tower.
As shown in figure 1, as an embodiment, a heating device 1 is arranged at the bottom of two coke drums 2, steam is heated into superheated steam by the heating device, the superheated steam enters the coke drums according to production requirements, the reaction temperature in the coke drums is increased, the quality of coke and liquid recovery products are improved, and then the coke and the liquid recovery products enter a fractionation system.
As shown in fig. 1, as an embodiment, a temperature reduction device 3 is arranged on a pipeline from the top of the coke tower to the emptying tower, when the coke tower supplies steam greatly, a large amount of high-temperature steam enters the emptying tower after being reduced in temperature by the temperature reduction device from the top of the coke tower, and the temperature at the top of the emptying tower is controlled by controlling the temperature reduction amount of the temperature reduction device and the reflux of the emptying tower, so that the blockage of an air cooler and a cooler at the top of the emptying tower is avoided, and the temperature reduction device can be a heat exchange temperature reduction device and a water injection temperature reduction device.
Claims (4)
1. A heat control device of a delayed coking coke tower comprises two coke towers, a heating device, a temperature reduction device and an emptying tower, and is characterized in that the bottom of the coke tower is provided with the heating device, and steam is heated into superheated steam by the heating device; the pipeline from the top of the coke tower to the emptying tower is provided with a temperature reduction device, and high-temperature steam from the top of the coke tower is emptied or enters the emptying tower after being subjected to temperature reduction by the temperature reduction device.
2. The delayed coking coke drum heat control apparatus of claim 1 wherein the heating means comprises electrical heating means and gas heating means.
3. The delayed coking coke drum heat control apparatus of claim 1 wherein the desuperheating means comprises heat exchange desuperheating means and water injection desuperheating means.
4. The delayed coking coke drum heat control apparatus of claim 1 wherein the heating means and the de-warming means are equipped with remote control systems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721881110.9U CN214654670U (en) | 2017-12-28 | 2017-12-28 | Delayed coking coke tower heat control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721881110.9U CN214654670U (en) | 2017-12-28 | 2017-12-28 | Delayed coking coke tower heat control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214654670U true CN214654670U (en) | 2021-11-09 |
Family
ID=78443370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721881110.9U Active CN214654670U (en) | 2017-12-28 | 2017-12-28 | Delayed coking coke tower heat control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214654670U (en) |
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2017
- 2017-12-28 CN CN201721881110.9U patent/CN214654670U/en active Active
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