Cooling crystallization reactor monitoring device

Abstract

The utility model discloses a monitoring device for a cooling crystallization reactor, which relates to the technical field of chemical equipment, comprises a reactor, a water inlet arranged at the upper part of the reactor, a water outlet arranged at the bottom of the reactor and a cooling coil arranged in the reactor, and is characterized in that a monitoring device is arranged on the outer wall of the reactor; the monitoring device comprises a square shell, an inner cavity of the shell is communicated with an inner cavity of the reactor, a light intensity monitoring assembly is arranged on the shell and composed of a light source projector and a photometer, and the light source projector and the photometer are arranged on the two opposite side walls of the shell respectively. And an emergent light beam of the light source projector linearly penetrates through the inner cavity of the shell and then enters a light inlet of the photometer opposite to the light source projector. The device disclosed by the utility model can monitor the concentration state of ferrous sulfate salt crystals in the reactor in real time, can realize continuous water inlet crystallization, and is low in cost and good in application effect.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment, in particular to a cooling crystallization reactor monitoring device. Background Art

[0002] A large amount of wastewater containing ferrous sulfate is generated during the pickling process of seamless steel pipes. At this stage, these wastewaters will be crystallized and recovered. The principle is to cool the wastewater through a cooling crystallization reactor so that the ferrous sulfate reaches supersaturation and crystallizes and slowly settles to the bottom of the reactor. After the precipitated ferrous sulfate reaches a certain concentration, it is discharged from the bottom outlet of the cooling crystallization reactor together with the wastewater into the centrifuge for solid-liquid separation to obtain pure ferrous sulfate crystals.

[0003] However, during the cooling crystallization process, since the crystal concentration of ferrous sulfate cannot be controlled, most companies adopt a batch crystallization method. For example, a certain amount of wastewater is put into the cooling crystallization reactor, and the reactor is emptied after a certain period of time before the next batch of wastewater is processed. This method is inefficient and has serious energy waste, and cannot meet the requirements of continuous cooling crystallization. At present, some companies want to use advanced sensing systems. When the ferrous sulfate crystals at the bottom of the reactor reach a certain concentration, the liquid pump is started to discharge the mixed liquid at the bottom of the reactor into the separator, and new liquid is added for cooling. This method can meet the requirements of continuous cooling crystallization. However, since the wastewater is acidic, the temperature inside the reactor is low, and the environment is relatively harsh, the requirements for the sensor system are very high, the cost is high, and it is easy to damage, and its industrial application value is not great. Summary of the Invention

[0004] The purpose of the utility model is to overcome the shortcomings of the above-mentioned technology and provide a cooling crystallization reactor monitoring device, which can monitor the concentration state of ferrous sulfate crystals in the reactor in real time, realize continuous water inlet crystallization, and has low cost and good application effect.

[0005] In order to achieve the above-mentioned purpose of the utility model, the technical solution adopted by the utility model is:

[0006] A cooling crystallization reactor monitoring device comprises a reactor, a water inlet arranged at the upper part of the reactor and a water outlet arranged at the bottom of the reactor, wherein a cooling coil is arranged in the reactor, and is characterized in that a monitoring device is arranged on the outer wall of the reactor, the monitoring device comprises a square shell, the inner cavity of the shell is connected with the inner cavity of the reactor, a light intensity monitoring component is arranged on the shell, and the light intensity monitoring component consists of a light source projector and a photometer, the light source projector and the photometer are respectively arranged on the opposite side walls of the shell, and the output light beam of the light source projector passes through the inner cavity of the shell in a straight line and then enters the light inlet of the photometer opposite to it.

[0007] A further improvement of the present invention is that the shell is a transparent shell, and the light source projector and the light meter are respectively arranged on the outer walls of both sides of the shell. The transparent shell facilitates the projection and reception of the light source and also facilitates the observation of the internal situation of the reactor.

[0008] A further improvement of the present invention is that a stirrer is provided in the reactor, and the cooling coil is located outside the stirrer, so that uniform cooling is achieved by stirring while cooling.

[0009] A further improvement of the present invention is that the light intensity monitoring components are arranged in several groups from top to bottom, and a partition is provided between two adjacent groups of light intensity monitoring components in the housing to prevent light beams from interfering with each other and affecting light intensity measurement.

[0010] A further improvement of the present invention is that a screen for displaying light intensity values ​​is provided on the outer wall of the reactor, and the screen is electrically connected to the light intensity monitoring component, so that the light intensity values ​​of each area can be easily and intuitively viewed.

[0011] The beneficial effects of the utility model are:

[0012] The utility model sets a light intensity monitoring component. When the light intensity value measured by a certain light intensity monitoring component is low, it indicates that the concentration of ferrous sulfate crystals on this horizontal plane is high, causing a decrease in light intensity. By setting the light intensity value on a certain horizontal plane to a set value, the drain outlet can be opened to transport part of the mixed liquid to the separator for solid-liquid separation. Compared with a complex sensing system, the utility model has lower cost and can more intuitively see the crystallization situation. By setting multiple groups of light intensity monitoring components, the crystal concentration situation in each horizontal plane area can be more clearly seen. The cooling crystallization reactor monitoring device provided by the utility model can realize a continuous crystallization process with high work efficiency, low operating cost and reduced energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the main view of the utility model.

[0014] Figure 2 It is a side view of the present utility model.

[0015] In the figure: reactor 1, water inlet 2, water outlet 3, cooling coil 4, monitoring device 5, shell 6, light intensity monitoring component 7, light source projector 8, light meter 9, stirrer 10, screen 11, partition 12. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings.

[0017] like Figure 1-2As shown, a cooling crystallization reactor monitoring device includes a reactor 1, a water inlet 2 arranged at the upper part of the reactor 1 and a water outlet 3 arranged at the bottom of the reactor 1, a cooling coil 4 is arranged in the reactor 1, and a monitoring device 5 is arranged on the outer wall of the reactor 1. The monitoring device 5 includes a square shell 6, the inner cavity of the shell 6 is connected to the inner cavity of the reactor 1, and a light intensity monitoring component 7 is arranged on the shell 6. The light intensity monitoring component 7 is composed of a light source projector 8 and a photometer 9. The light source projector 8 and the photometer 9 are respectively arranged on the opposite side walls of the shell 6. The outgoing light beam of the light source projector 8 passes through the inner cavity of the shell 6 in a straight line and then enters the light inlet of the photometer 9 opposite to it.

[0018] In this embodiment, the shell 6 is a transparent shell, and the light source projector 8 and the light meter 9 are respectively arranged on the outer walls of both sides of the shell 6. The transparent shell facilitates the projection and reception of the light source and also facilitates the observation of the internal situation of the reactor.

[0019] In this embodiment, a stirrer 10 is provided in the reactor 1, and the cooling coil 4 is located outside the stirrer 10, so that uniform cooling is achieved by stirring while cooling.

[0020] In this embodiment, several groups of light intensity monitoring components 7 are arranged from top to bottom, and a partition 12 is provided between two adjacent groups of light intensity monitoring components 7 in the housing 6 to prevent light beams from interfering with each other and affecting light intensity measurement.

[0021] In this embodiment, a screen 11 for displaying light intensity values ​​is provided on the outer wall of the reactor 1 . The screen 11 is electrically connected to the light intensity monitoring component 7 , so that the light intensity values ​​of each area can be easily and intuitively viewed.

[0022] The working principle of this utility model is:

[0023] During the operation of the cooling crystallization reactor, an intermittent partial water inlet and partial water outlet working mode is adopted. This mode has higher working efficiency. The light intensity monitoring component 7 is in the open state during this process. When the crystals inside the reactor 1 crystallize to a certain extent, crystal stratification will occur. The concentration of the crystals changes from thick to thin from bottom to top. When the crystal concentration in a certain horizontal area is high, the light intensity measured by the light intensity monitoring component 7 will be low. This is because the crystals block the transmission of light. When the light intensity is low to the set value, the water outlet 3 is opened to transport part of the mixed liquid to the separator for solid-liquid separation, and new liquid is added at the same time to achieve uninterrupted operation and effectively improve work efficiency.

[0024] The embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. A cooling crystallization reactor monitoring device, comprising a reactor, a water inlet arranged at the upper part of the reactor and a water outlet arranged at the bottom of the reactor, wherein a cooling coil is arranged in the reactor, characterized in that: A monitoring device is provided on the outer wall of the reactor, and the monitoring device includes a square shell. The inner cavity of the shell is connected to the inner cavity of the reactor. A light intensity monitoring component is provided on the shell, and the light intensity monitoring component consists of a light source projector and a light meter. The light source projector and the light meter are respectively provided on the opposite side walls of the shell. The outgoing light beam of the light source projector passes through the inner cavity of the shell in a straight line and then enters the light inlet of the light meter opposite to it.

2. A cooling crystallization reactor monitoring device according to claim 1, characterized in that, The shell is a transparent shell, and the light source projector and the light meter are respectively arranged on the outer walls of both sides of the shell.

3. A cooling crystallization reactor monitoring device according to claim 1, characterized in that, A stirrer is provided in the reactor, and the cooling coil is located outside the stirrer.

4. A cooling crystallization reactor monitoring device according to claim 1, characterized in that, The light intensity monitoring components are arranged in a plurality of groups from top to bottom, and a partition is arranged between two adjacent groups of light intensity monitoring components in the shell.

5. A cooling crystallization reactor monitoring device according to claim 1 or 4, characterized in that, The outer wall of the reactor is provided with a screen for displaying light intensity values, and the screen is electrically connected to the light intensity monitoring component.

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