CN201857415U - Low-temperature chlorination system - Google Patents

Abstract

The utility model provides a low-temperature chlorination system, the low-temperature chlorination system comprises a chlorination furnace (1), the bottom of the chlorination furnace (1) has a slag outlet (1a), wherein It includes a first slag discharge pipe (3) communicated with the slag discharge port (1a), a solenoid valve is arranged in the first slag discharge pipe (3), and the low temperature chlorination system includes controlling the opening of the solenoid valve and A closed controller, the chlorination furnace (1) is provided with a material level detection device (2), and the material level detection device (2) is electrically connected to the controller. The material level in the chlorination furnace is detected by the material level detection device, and a signal is sent to the controller when the detected material level reaches the set material level value. The controller then controls the electromagnetic valve to open, so that the chlorination residue accumulated at the bottom of the chlorination furnace is discharged through the slag discharge port and the first slag discharge pipe. Therefore, the utility model can realize continuous industrialized slagging, and can be beneficial to the forward running of the chlorination furnace system.

Description

Low temperature chlorination system

technical field

The utility model relates to a low-temperature chlorination system.

Background technique

During the low-temperature chlorination process, raw materials (such as carbide slag) undergo low-temperature chlorination in the chlorination furnace and produce a large amount of chlorination residue at the bottom of the chlorination furnace. In order to continue low-temperature chlorination, it is necessary to discharge the chlorination residue from the chlorination furnace. At present, the slagging method of chlorinated residues is mostly slag removal by stopping the furnace, so the effective production cycle is very short and seriously affects the production capacity. In addition, there is a very large workload and difficulty in shutting down the furnace to discharge slag. After the slag discharge, it is necessary to readjust the reaction environment in the chlorination furnace, which affects the subsequent low-temperature chlorination, that is, the low-temperature chlorination cannot go smoothly.

Utility model content

The technical problem to be solved by the utility model is to overcome the existing furnace shutdown and slag removal, and to enable the low-temperature chlorination to be carried out continuously and smoothly.

In order to solve the above technical problems, the utility model provides a low-temperature chlorination system, the low-temperature chlorination system includes a chlorination furnace, the bottom of the chlorination furnace has a slag outlet, wherein the low-temperature chlorination system also includes a The first slag discharge pipe connected to the slag discharge port, the first slag discharge pipe is provided with a solenoid valve, the low temperature chlorination system includes a controller for controlling the opening and closing of the solenoid valve, and the chlorination furnace is provided with a material A level detection device, the material level detection device is electrically connected with the controller.

Preferably, the material level detection device is a material level gauge or a pressure sensor.

Preferably, the low-temperature chlorination system includes an intermediate slagging tank, which is located below the chlorination furnace, and the two ends of the first slagging pipe are respectively connected to the slagging outlet and the An intermediate slag discharge tank, the intermediate slag discharge tank has a second slag discharge pipe arranged at the bottom of the intermediate slag discharge tank.

Preferably, an exhaust pipe is provided on the top of the intermediate slagging tank. More preferably, the low-temperature chlorination system includes a purge gas source, and a purge gas pipe communicating with the purge gas source is provided on the intermediate slagging tank. More preferably, the purge gas pipe is arranged at the lower part of the intermediate slagging tank.

In addition, preferably, at least one of the second slag discharge pipe, the exhaust pipe and the purge gas pipe is provided with a solenoid valve, and the controller controls the opening and closing of the solenoid valve.

Preferably, the low-temperature chlorination system includes a loosening gas source, and the chlorination furnace is provided with a loosening gas pipe communicating with the loosening gas source, and the loosening gas pipe is arranged near the slag discharge port. More preferably, the chlorination furnace is provided with an air inlet pipe and a feed pipe, the air inlet pipe is arranged above the slag outlet, and the feed pipe is arranged on the top of the chlorination furnace.

In addition, preferably, at least one of the loose air pipe and the intake pipe is provided with a solenoid valve, and the controller controls the opening and closing of the solenoid valve.

Using the above technical scheme of the utility model, the material level in the chlorination furnace is detected by the material level detection device, that is, the accumulation of chlorination residue at the bottom of the chlorination furnace is detected, and when the detected material level reaches the set A signal is sent to the controller when the material level value is reached. The controller then controls the electromagnetic valve to open, so that the chlorination residue accumulated at the bottom of the chlorination furnace is discharged through the slag discharge port and the first slag discharge pipe. Therefore, the utility model can realize continuous industrialized slagging, and can be beneficial to the forward running of the chlorination furnace system.

Other features and advantages of the present utility model will be described in detail in the following specific embodiments.

Description of drawings

The accompanying drawings are used to provide a further understanding of the utility model, and constitute a part of the description, and are used to explain the utility model together with the specific embodiments of the utility model, but do not constitute a limitation to the utility model. In the attached picture:

Fig. 1 is a structural schematic diagram illustrating an embodiment of the low-temperature chlorination system of the present invention.

Explanation of reference signs

1: Chlorination furnace 1a: Slag outlet 1b: Loose air pipe 1c: Air intake pipe

2: Material level detection device 3: The first slag discharge pipe

4: Intermediate slag discharge tank 4a: Second slag discharge pipe 4b: Exhaust pipe 4c: Purge gas pipe

Detailed ways

The specific embodiment of the utility model will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the utility model, and are not intended to limit the utility model.

The low-temperature chlorination system of the present utility model comprises a chlorination furnace 1, and the bottom of the chlorination furnace 1 has a slagging outlet 1a, wherein the low-temperature chlorination system also includes a first slagging outlet connected to the slagging outlet 1a Pipe 3, the first slag discharge pipe 3 is provided with a solenoid valve, the low-temperature chlorination system includes a controller (not shown) that controls the opening and closing of the solenoid valve, and the chlorination furnace 1 is provided with a material level A detection device 2, the material level detection device 2 is electrically connected with the controller.

During use, the material level in the chlorination furnace 1 is detected by the material level detection device 2 , that is, the accumulation height of the chlorination residue accumulated in the chlorination furnace 1 . When the material level detected by the material level detection device 2 reaches a predetermined value, the material level detection device 2 sends a signal to the controller, and the controller immediately controls the electromagnetic valve in the first slag discharge pipe 3 after receiving the signal. The valve opens to start the slagging operation. Since the bottom of the chlorination furnace 1 where the chlorination residues are piled up, the chlorination residues are automatically discharged downward through the slag discharge port 1a at the bottom of the chlorination furnace 1 by their own weight during slag discharge. While performing this downward discharge, the chlorination reaction in the chlorination furnace 1 is not affected, so the slagging operation can be performed without interrupting the normal chlorination in the chlorination furnace 1 . In other words, the chlorination system of the utility model can carry out chlorination reaction and slag discharge at the same time, thereby ensuring that the chlorination reaction can be carried out continuously and smoothly.

Wherein, an upper limit and a lower limit can be set for the measured value of the material level detection device 2, the upper limit corresponds to the maximum height of the chlorination residue allowed to accumulate, and the lower limit corresponds to the minimum height of the chlorination residue that can ensure that the chlorination reaction is normally carried out . In other words, when the measured value of the material level detection device 2 reaches the upper limit, the controller controls the solenoid valve to open for slag discharge operation; when the measured value of the material level detection device 2 reaches the lower limit, the controller controls the solenoid valve The above solenoid valve is closed to stop the slag discharge operation.

Usually, the chlorination residue accumulated at the bottom of the chlorination furnace 1 is static, that is, a "dead bed" is formed. Through the low-temperature chlorination system of the utility model, it is obvious that the height of the "dead bed" can be adjusted as required, thereby facilitating the low-temperature chlorination reaction and the control of the reaction.

The material level detection device 2 can be various devices suitable for directly or indirectly detecting the material level in the chlorination furnace 1 , preferably, the material level detection device 2 is a material level gauge or a pressure sensor. Wherein, the material level gauge can directly detect the material level in the chlorination furnace 1 , and the pressure sensor can indirectly detect the material level in the chlorination furnace 1 by detecting the pressure in the chlorination furnace 1 . In addition, due to the harsh working environment in the chlorination furnace 1, high-temperature and corrosion-resistant level gauges or pressure sensors can be used, or high-temperature and corrosion-resistant measures can be applied to the level gauge or pressure sensors, such as coating high-temperature-resistant , Corrosion-resistant coating.

Preferably, as shown in Figure 1, the low-temperature chlorination system may include an intermediate slagging tank 4, which is located below the chlorination furnace 1, and the two ends of the first slagging pipe 3 are They are respectively connected to the slag discharge port 1a and the intermediate slag discharge tank 4, and the bottom of the intermediate slag discharge tank 4 is provided with a second slag discharge pipe 4a. With this structure, the chlorination residue discharged from the chlorination furnace 1 will first be discharged into the intermediate slagging tank 4 below the chlorination furnace 1 for temporary storage or other pretreatment. For example, gaseous substances such as a small amount of chlorine gas and titanium tetrachloride may be entrained in the chlorination residue discharged from the chlorination furnace 1. If this chlorination residue is directly discharged into the atmosphere, it will cause serious pollution. Therefore, this chlorinated residue can be discharged into the intermediate slagging tank 4 for pretreatment before being discharged into the atmosphere.

Preferably, the top of the intermediate slagging tank 4 is provided with an exhaust pipe 4b. As mentioned above, first discharge the chlorination residues with a small amount of gaseous substances such as chlorine gas and titanium tetrachloride into the intermediate slag discharge tank 4, and temporarily store the gaseous substances such as chlorine gas and titanium tetrachloride to float up and get out of the solid state. Chlorination residue (hereinafter referred to as solid residue). Wherein, the gaseous substances such as chlorine gas and titanium tetrachloride floating up can be discharged into, for example, an exhaust gas treatment system through the exhaust pipe 4b. Then, the solid residue from which gaseous substances such as chlorine gas and titanium tetrachloride have been removed can be discharged into the atmosphere through the second slag discharge pipe 4a.

More preferably, the low-temperature chlorination system may include a purge gas source (not shown), and the intermediate slagging tank 4 is provided with a purge gas pipe 4c communicated with the purge gas source to pass through The gas pipe 4c supplies the purge gas to the intermediate slagging tank 4 from the purge gas source. Wherein, the purge gas in the purge gas source may be air or other suitable gas that does not react with gaseous substances such as chlorine gas and titanium tetrachloride. By providing purge gas, the gaseous substances such as chlorine gas and titanium tetrachloride adsorbed on the surface of the chlorination residue from the chlorination furnace 1 can be purged, so that the gaseous substances such as chlorine gas and titanium tetrachloride are separated from the solid residue rapidly, and Gaseous substances such as chlorine gas and titanium tetrachloride are carried by the purge gas and discharged from the exhaust pipe 4b.

In addition, the purge gas pipe 4c can be connected to an appropriate position of the intermediate slagging tank 4, so as to facilitate the purge of the chlorinated residue transported into the intermediate slagging tank 4 at the first time. Since the chlorination residue will fall to the bottom of the intermediate slagging tank 4 , it is preferable to arrange the purge gas pipe 4 c at the lower part of the intermediate slagging tank 4 .

In addition, in order to facilitate control, at least one of the second slag discharge pipe 4a, the exhaust pipe 4b and the purge gas pipe 4c is provided with a solenoid valve, and the controller controls the opening and closing of the solenoid valve. closure. In the embodiment shown in FIG. 1 , the second slag discharge pipe 4a, the exhaust pipe 4b and the purge air pipe 4c are respectively provided with electromagnetic valves. During use, when the chlorination residue is imported from the chlorination furnace 1 into the intermediate slagging tank 4, the electromagnetic valve in the second slagging pipe 4a can be closed by the controller at first, and the exhaust pipe 4b and the purge gas pipe 4c can be opened at the same time. Solenoid valve, so that the chlorination residue is purged first. After purging for a predetermined time, the solenoid valve of the second slag discharge pipe 4a can be opened, so that the solid residue is discharged into the atmosphere.

Optionally, by controlling the flow and flow velocity of the purge gas, etc. (for example, the purge gas with a predetermined flow and flow velocity is provided by the purge gas source), so that gaseous substances such as chlorine and titanium tetrachloride enter the chlorination residue During the falling process of the intermediate slag discharge tank 4, the solid residue is separated and discharged through the exhaust pipe 4b, so that the solid residue falling to the bottom of the intermediate slag discharge tank 4 can be directly discharged from the second slag discharge pipe 4. In this case, there is no need to provide electromagnetic valves in the second slag discharge pipe 4a, the exhaust pipe 4b and the purge gas pipe 4c respectively.

In addition, as shown in Figure 1, the low-temperature chlorination system may include a loosening gas source (not shown), and the chlorination furnace 1 is provided with a loosening gas pipe 1b communicated with the loosening gas source, and the loosening gas pipe 1b It is arranged near the slag outlet 1a. With this structure, gas can be blown from the loosening gas source to around the slag outlet 1a of the chlorination furnace 1 by loosening the air pipe 1b, thereby loosening the chlorination residue accumulated near the slag outlet 1a to prevent the chlorination residue from clogging Slag outlet 1a. Wherein, the gas in the loose gas source can be the reaction gas in the chlorination furnace 1, such as chlorine, so as not to affect the reaction in the chlorination furnace 1.

In addition, the chlorination furnace 1 is provided with an air inlet pipe 1c and a feed pipe (not shown), the air inlet pipe 1c is arranged above the slagging outlet 1a, and the feed pipe is arranged above the chlorine The top of furnace 1. Wherein, the inlet pipe 1c and the feed pipe are respectively connected to corresponding reaction gas sources and material sources, so that the gas and materials required for the reaction are transported to the chlorination furnace 1 through the inlet pipe 1c and the feed pipe respectively. Since the inlet pipe 1c is arranged above the slag discharge port 1a, and the feed pipe is arranged on the top of the chlorination furnace 1, the transportation of reaction gas and materials will not affect the slag discharge operation.

Preferably, in order to control the progress of the reaction, at least one of the loose air pipe 1b and the air inlet pipe 1c is provided with a solenoid valve, and the controller controls the opening and closing of the solenoid valve, so that the chlorine can be controlled and adjusted. Reactions in Furnace 1.

It should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner, which also fall within the scope of the present utility model. In addition, various implementations of the present invention can also be combined arbitrarily, as long as they do not violate the idea of the present invention, they should also be regarded as the disclosed content of the present invention.

The preferred embodiment of the utility model has been described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the specific details of the above-mentioned embodiment, and within the scope of the technical concept of the utility model, the technical solution of the utility model can be carried out in many ways. These simple modifications all belong to the protection scope of the present utility model.

Claims (10)

1. low temperature chlorination system, this low temperature chlorination system comprises chlorination furnace (1), the bottom of this chlorination furnace (1) has slag outlet (1a), it is characterized in that, described low temperature chlorination system also comprises and The first slag discharge pipe (3) connected to the slag discharge port (1a), the first slag discharge pipe (3) is provided with a solenoid valve, and the low temperature chlorination system includes a valve for controlling the opening and closing of the solenoid valve A controller, the chlorination furnace (1) is provided with a material level detection device (2), and the material level detection device (2) is electrically connected to the controller. 2. The low-temperature chlorination system according to claim 1, characterized in that, the material level detection device (2) is a material level gauge or a pressure sensor. 3. low-temperature chlorination system according to claim 1, is characterized in that, described low-temperature chlorination system comprises intermediate slagging tank (4), and this intermediate slagging tank (4) is positioned at described chlorination furnace (1) The two ends of the first slag discharge pipe (3) are respectively connected to the slag discharge outlet (1a) and the intermediate slag discharge tank (4), and the bottom of the intermediate slag discharge tank (4) is set There is a second slag discharge pipe (4a). 4. The low-temperature chlorination system according to claim 3, characterized in that an exhaust pipe (4b) is arranged on the top of the intermediate slagging tank (4). 5. The low-temperature chlorination system according to claim 4, characterized in that, the low-temperature chlorination system comprises a purge gas source, and the intermediate slagging tank (4) is provided with a purge gas line (4c). 6. The low-temperature chlorination system according to claim 5, characterized in that, the purge gas pipe (4c) is arranged at the lower part of the intermediate slagging tank (4). 7. The low-temperature chlorination system according to claim 6, characterized in that at least one of the second slagging pipe (4a), the exhaust pipe (4b) and the purge gas pipe (4c) A solenoid valve is arranged in the center, and the controller controls the opening and closing of the solenoid valve. 8. The low-temperature chlorination system according to any one of claims 1-7, characterized in that, the low-temperature chlorination system includes a loose gas source, and the chlorination furnace (1) is provided with a A loosening air pipe (1b) connected to a gas source is arranged near the slag discharge port (1a). 9. low-temperature chlorination system according to claim 8, is characterized in that, described chlorination furnace (1) is provided with gas inlet pipe (1c) and feed pipe, and described gas inlet pipe (1c) is arranged on described Above the slagging outlet (1a), the feed pipe is arranged on the top of the chlorination furnace (1). 10. The low-temperature chlorination system according to claim 9, characterized in that, at least one of the loose air pipe (1b) and the air inlet pipe (1c) is provided with a solenoid valve, and the controller controls the Solenoid valve opening and closing.

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