Low-disturbance anti-deposition type phenol water evaporator

Abstract

The utility model relates to phenol water treatment equipment technical field discloses a low disturbance anti -deposition type phenol water evaporimeter. The phenol water evaporimeter includes evaporimeter body, phenol water water adding pipeline and blowdown, is equipped with phenol steam export subassembly in evaporimeter body top, and the water outlet of phenol water water adding pipeline extends to evaporimeter body, and the blowdown is located in evaporimeter body, wherein, the water outlet of phenol water water adding pipeline is opposite with the blowdown and is located in evaporimeter body bottom area, and when water is added to phenol water water adding pipeline, water flow can directly flush the impurity deposited in evaporimeter body bottom and is guided to the blowdown. The utility model discloses the water outlet of water adding pipeline and the blowdown are opposite and are located in the evaporimeter bottom, utilize water flow to directly flush the bottom impurity and are guided to the blowdown, effectively solve the impurity deposition problem, and the bottom water adding mode reduces the temperature difference impact of low temperature phenol water to steam layer, realizes the effect of improving equipment operation stability, safety and economy.

Description

Technical Field

[0001] This utility model relates to the technical field of phenol water treatment equipment, specifically a low-disturbance, anti-deposition type phenol water evaporator. Background Technology

[0002] In industrial production fields such as coking and coal chemical industry, the treatment of phenol-containing wastewater is of paramount importance. As a core treatment device, the phenol water evaporator heats the phenol water to evaporate into phenol vapor, which is then used by downstream processes for energy recovery or resource utilization. Its operational efficiency has a significant impact on the stability and economy of the entire production process.

[0003] Currently widely used phenol water evaporators have revealed many significant defects in long-term actual operation, which seriously restrict the operating efficiency, safety, and economy of the equipment. Specifically:

[0004] Firstly, temperature shocks cause steam fluctuations. The newly added phenol water is mostly at room temperature or low temperature, while the evaporator is usually in a high-temperature environment above 100°C due to heating, resulting in a huge temperature difference between the two. After the low-temperature phenol water is injected, it will instantly reduce the steam layer temperature, causing a sharp decrease in phenol steam production and fluctuations in saturation temperature, which in turn interferes with the stability and control accuracy of the downstream system furnace.

[0005] Secondly, the accumulation of impurities poses safety hazards. Solid impurities such as tar residue and inorganic salts easily accumulate at the bottom of the evaporator, and the existing structure cannot effectively flush them out. Long-term accumulation of impurities reduces heat transfer efficiency and may also clog pipes or cause localized overheating, threatening equipment safety. Although some equipment has drain outlets at the bottom, the lack of an active flushing mechanism limits the effectiveness of impurity removal.

[0006] Although the industry has tried to alleviate the above problems by optimizing heating parameters or adding pretreatment steps, none of these methods have fundamentally solved the two major problems of temperature shock and impurity accumulation. Utility Model Content

[0007] To overcome the problems existing in related technologies, this utility model provides a low-disturbance, anti-deposition phenol water evaporator. It aims to effectively mitigate the impact of temperature difference shock on steam stability and solve the problem of bottom impurity deposition by optimizing the water inlet structure and bottom design of the phenol water evaporator, thereby improving the operating efficiency, safety and economy of the equipment.

[0008] The technical solution adopted in this utility model is: a low-disturbance, anti-deposition type phenol water evaporator, comprising...

[0009] An evaporator body, wherein a phenol vapor export assembly is provided on the top of the evaporator body;

[0010] A phenol water supply pipe, wherein the outlet of the phenol water supply pipe extends to the evaporator body;

[0011] The drain outlet is located on the evaporator body; wherein,

[0012] The outlet of the phenol water adding pipe is located opposite the drain outlet in the bottom area of ​​the evaporator body. When water is added through the phenol water adding pipe, the water flow can directly flush away the impurities deposited at the bottom of the evaporator body and guide them to the drain outlet.

[0013] Furthermore, the outlet of the phenol water adding pipe is located on the side wall of the evaporator body and at a height less than 1 / 3 of the height of the evaporator body. The outlet of the phenol water adding pipe is inclined downward and is set directly opposite the drain outlet.

[0014] Furthermore, the bottom of the evaporator body is a conical structure, the drain outlet is located at the apex of the conical structure, and the outlet of the phenol water adding pipe points to this apex.

[0015] Furthermore, the inlet of the phenol water adding pipeline is connected to a preheating tank, which includes an inlet channel and an outlet channel, and the inlet of the phenol water adding pipeline is connected to the outlet channel of the preheating tank.

[0016] Furthermore, the preheating tank inlet channel is connected to a phenol water pump, which is connected to a phenol water source via a pipeline.

[0017] Furthermore, the phenol water addition pipeline is equipped with a phenol water addition control valve.

[0018] Furthermore, the phenol vapor export assembly includes at least one phenol vapor outlet pipe and at least one phenol vapor venting pipe. One end of the phenol vapor outlet pipe is connected to the evaporator body, and the other end is connected to the downstream energy recovery system. One end of the phenol vapor venting pipe is connected to the evaporator body, and the other end is provided with a phenol vapor venting port. The phenol vapor venting pipe is equipped with a pressure regulating valve.

[0019] Furthermore, the sewage outlet is connected to the standby tank via a sewage pipe, and the sewage pipe is equipped with a sewage control valve.

[0020] The low-disturbance, anti-deposition phenolic water evaporator of this utility model has the following technical effects: (1) By utilizing the direct flushing effect of the water flow, impurities at the bottom of the evaporator can be promptly guided to the drain outlet for discharge, avoiding long-term deposition of impurities and ensuring the heat transfer efficiency and operational safety of the equipment. (2) The bottom water addition method reduces the direct impact of low-temperature phenolic water on the high-temperature steam layer, which helps to maintain the stability of the steam layer temperature, reduce steam output fluctuations, and improve the stability of the downstream system operation. (3) It reduces equipment scaling and corrosion caused by impurity deposition, reducing the frequency and cost of equipment maintenance; at the same time, the stability of steam output also reduces the need for repeated adjustments to the heating power of the system, reducing energy consumption and improving the operational economy of the equipment.

[0021] Other features and advantages disclosed in this utility model will be described in detail in the following detailed description section. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0023] Figure 1 This is a schematic diagram of the overall structure of a low-disturbance, anti-deposition type phenol water evaporator according to an exemplary embodiment.

[0024] Reference numerals: 10. Low-disturbance, anti-deposition type phenol water evaporator; 20. Evaporator body; 21. Drain outlet; 30. Phenol water supply pipe; 31. Phenol water supply control valve; 40. Preheating tank; 50. Phenol water pump; 60. Phenol water source; 70. Phenol vapor discharge assembly; 71. Phenol vapor outlet pipe; 72. Phenol vapor venting pipe; 73. Pressure regulating valve; 80. Drain control valve; 90. Standby tank. Detailed Implementation

[0025] The specific embodiments disclosed herein will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this disclosure.

[0026] like Figure 1 The image shows a disclosed exemplary embodiment of the present invention. The low-disturbance, anti-deposition phenol water evaporator 10 of the present invention includes an evaporator body 20, a phenol water supply pipe 30, and a drain outlet 21. A phenol vapor export assembly 70 is provided at the top of the evaporator body 20. The outlet of the phenol water supply pipe 30 extends to the evaporator body 20. The drain outlet 21 is located on the evaporator body 20. Specifically, the outlet of the phenol water supply pipe 30 and the drain outlet 21 are positioned opposite each other at the bottom region of the evaporator body 20. When water is added to the phenol water supply pipe 30, the water flow directly washes away impurities deposited at the bottom of the evaporator body 20 and guides them to the drain outlet 21.

[0027] This utility model's low-disturbance, anti-deposition type phenol water evaporator 10 places the outlet of the phenol water supply pipe 30 at the bottom of the evaporator body 20, directly opposite the drain outlet 21. For example... Figure 1As shown in the diagram, the dotted line represents the water flow. Water is added through the phenol water inlet pipe 30, and the water flow directly flushes away impurities deposited at the bottom of the evaporator body 20 and directs them to the drain port 21. This establishes an active and directional impurity removal mechanism. In traditional evaporators, impurities tend to accumulate at the bottom due to a lack of effective flushing. However, this novel low-disturbance, anti-deposition phenol water evaporator 10, through the relative arrangement of the outlet and drain port 21, creates a directional flushing force from the water flow during addition, directly acting on the solid impurities such as tar residue and inorganic salts deposited at the bottom. This flushing not only breaks up clumps of impurities but also uses the thrust of the water flow to precisely guide the impurities to the drain port 21, significantly improving impurity discharge efficiency and preventing impurities from adhering to the bottom of the evaporator or the inner wall of the pipe. This solves the problem of decreased heat transfer efficiency caused by impurity deposition, ensuring the long-term stability of the evaporator's heat exchange performance. Furthermore, the bottom-filling water layout reduces the interference of temperature difference shocks on the steam system. When water is added from the top in the traditional method, the low-temperature phenol water directly enters the high-temperature steam layer, which can cause drastic temperature fluctuations. However, when water is added from the bottom, the low-temperature phenol water mixes with the liquid at the bottom of the evaporator first, gradually absorbing heat. This reduces the direct impact on the temperature of the upper steam layer, reduces the fluctuation range of phenol steam production, and is conducive to the stable control of the downstream furnace conditions, thereby improving the continuity and stability of the entire production process.

[0028] For example, such as Figure 1 As shown, in the exemplary embodiment disclosed in this utility model, the outlet of the phenol water adding pipe 30 is located on the side wall of the evaporator body 20 and its height is less than 1 / 3 of the height of the evaporator body 20. The outlet of the phenol water adding pipe 30 is inclined downward and is set directly opposite the drain outlet 21. The bottom of the evaporator body 20 has a conical structure, and the drain outlet 21 is located at the apex of the conical structure, with the outlet of the phenol water adding pipe 30 pointing towards this apex.

[0029] In the exemplary embodiment disclosed in this utility model, the outlet of the phenol water adding pipe 30 is located at a lower position on the side wall of the evaporator body 20, at a height less than 1 / 3 of the height of the evaporator body 20. This allows the water flow to directly act on the core area of ​​the deposited impurities at the bottom, avoiding the weakening of the flushing force due to the outlet being too high. The downward-sloping outlet design further enhances the impact force of the water flow on the bottom. Combined with the orientation towards the drain outlet 21, a directional flushing path is formed, ensuring that the water flow can accurately impact the impurities and push them towards the drain outlet 21. The bottom of the evaporator body 20 has a conical structure, and the drain outlet 21 is located at the apex of the conical structure, thus forming a natural flow guiding effect. The conical slope guides impurities to gather towards the apex under the action of gravity, and the design of the outlet pointing towards the apex makes the water flow flushing direction consistent with the natural gathering direction of the impurities. The two work synergistically to greatly improve the thoroughness of impurity discharge, reduce residual deposits, thereby reducing the risk of scaling and corrosion of the equipment, extending the maintenance cycle, and reducing operating costs.

[0030] In addition, the outlet of the phenol water addition pipe 30 is located at a low position, which is conducive to the rapid mixing of the low-temperature phenol water with the high-temperature liquid at the bottom after entering the evaporator. The water then gradually diffuses upward through the guiding effect of the conical structure, reducing the probability of the low-temperature phenol water directly contacting the upper steam layer. This further reduces the impact of temperature difference shock on the steam layer and helps maintain the stability of steam output and temperature.

[0031] For example, such as Figure 1 As shown in the exemplary embodiment disclosed in this utility model, the inlet of the phenol water adding pipeline 30 is connected to a preheating tank 40. The preheating tank 40 includes an inlet channel and an outlet channel, and the inlet of the phenol water adding pipeline 30 is connected to the outlet channel of the preheating tank 40. A phenol water pump 50 is connected to the inlet channel of the preheating tank 40, and the phenol water pump 50 is connected to a phenol water source 60 through a pipeline. In addition, the phenol water adding pipeline 30 is equipped with a phenol water adding control valve 31.

[0032] In the exemplary embodiment disclosed in this utility model, the preheating tank 40 is provided to preheat the phenol water entering the phenol water supply pipe 30. After passing through the preheating tank 40, the temperature of the low-temperature phenol water increases, and when it enters the evaporator body 20, the temperature difference with the high-temperature environment inside the evaporator decreases. This reduces the impact of the low-temperature phenol water on the steam layer inside the evaporator, helps to maintain the stability of the steam layer temperature, makes the phenol steam production more stable, and reduces interference to the downstream system.

[0033] The phenol water pump 50 provides stable power for the delivery of phenol water. Through the phenol water pump 50, the phenol water from the phenol water source 60 can continuously and stably enter the phenol water supply pipeline 30 through the preheating tank 40, avoiding water volume fluctuations or flow interruptions caused by insufficient water supply pressure, and ensuring a stable amount of phenol water entering the evaporator body 20.

[0034] The phenol water supply control valve 31 allows for flexible adjustment of the amount of phenol water entering the evaporator body 20. Simultaneously, the preheating tank 40, phenol water pump 50, and phenol water supply control valve 31 work together to form a stable phenol water supply and regulation system. The preheated phenol water enters the evaporator under stable pressure and controllable flow, reducing temperature fluctuations, ensuring effective flushing, and lowering the heating energy consumption of the phenol water evaporator, thus comprehensively improving the equipment's operating efficiency and economy.

[0035] For example, the phenol vapor export assembly 70 includes at least one phenol vapor outlet pipe 71 and at least one phenol vapor venting pipe 72. One end of the phenol vapor outlet pipe 71 is connected to the evaporator body 20 and the other end is connected to the downstream energy recovery system. One end of the phenol vapor venting pipe 72 is connected to the evaporator body 20 and the other end is provided with a phenol vapor venting port. The phenol vapor venting pipe 72 is provided with a pressure regulating valve 73.

[0036] Specifically, such as Figure 1As shown in the exemplary embodiment disclosed in this utility model, the phenol vapor export assembly 70 includes a phenol vapor outlet pipe 71 and a phenol vapor venting pipe 72. The phenol vapor outlet pipe 71 transports the phenol vapor generated in the evaporator body 20 to the downstream energy recovery system, enabling the recovery and reuse of phenol vapor that might otherwise be wasted, realizing the secondary utilization of energy, and improving the resource utilization rate and economy of the entire production process. The phenol vapor venting pipe 72 and the pressure regulating valve 73 on the pipe body constitute a safety guarantee mechanism. When the pressure in the evaporator body 20 rises for various reasons and exceeds the set threshold, the pressure regulating valve 73 will automatically open, discharging the excess phenol vapor through the phenol vapor venting port, avoiding equipment damage, leakage and other safety accidents caused by excessive pressure in the evaporator body 20, and ensuring the safe and stable operation of the equipment.

[0037] For example, such as Figure 1 As shown in the exemplary embodiment disclosed in this utility model, the drain outlet 21 is connected to the standby tank 90 via a drain pipe, and the drain pipe is equipped with a drain control valve 80. The drain control valve 80 can flexibly adjust the drain volume and timing. Operators can control the impurities entering the standby tank 90 through the drain pipe by opening or closing the drain control valve 80 and adjusting the valve opening according to the impurity deposition at the bottom of the evaporator; this avoids excessive loss of phenolic water or incomplete discharge of impurities due to uncontrolled draining, achieving precise draining. The standby tank 90 facilitates the unified treatment and recycling of discharged impurities and waste liquid, such as extracting recyclable substances, improving resource utilization, and reducing the difficulty and cost of waste disposal. The cooperation between the drain pipe and the drain control valve 80 makes the entire draining system simple in structure, easy to operate, and convenient to maintain and manage.

[0038] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0039] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0040] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

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