Coking desulfurization waste liquid hyperconcentration preparation and heat energy comprehensive recovery device

Abstract

The utility model provides a coking desulfurization waste liquid hyperconcentration preparation and comprehensive heat energy recovery device, which relates to the field of desulfurization waste liquid treatment, and comprises a first evaporation tank and a second evaporation tank, one side of the outer wall of the first evaporation tank is fixedly connected with a water inlet pipe, and the bottom of the first evaporation tank is fixedly connected with a drain pipe; a steam pipe is fixedly connected to the top of the first evaporation tank, a storage tank is arranged in the first evaporation tank, a heater is fixedly connected to the bottom of the first evaporation tank, a water source is added into the first evaporation tank, the heater is started to heat cold water, and heat is transferred into the storage tank from hot water; the waste liquid in the material storage tank is heated uniformly, the evaporation speed of water in the waste liquid is increased, the water in the waste liquid in the material storage tank is evaporated and flows into the second evaporation tank from the flow guide pipe, the material storage tank in the second evaporation tank is wrapped by steam circulation, the waste liquid in the second evaporation tank is heated and concentrated, and the effect of secondary utilization of steam is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to desulfurization waste liquid treatment technical field especially coking desulfurization waste liquid superconcentration preparation and heat energy comprehensive recovery device. BACKGROUND

[0002] In the production process of coking plant, the coke oven gas needs to be desulfurized, generally using wet desulfurization, which will produce desulfurization waste liquid when desulfurizing the gas. The desulfurization waste liquid contains a large amount of water and various pollutants, including heavy metals, suspended solids, organic matter, etc. Through concentration treatment, the water in the waste liquid can be evaporated, and the pollutants can be effectively concentrated and separated, thereby significantly reducing the amount and pollution degree of waste liquid discharge, meeting the environmental protection policy and standard requirements.

[0003] When the desulfurization waste liquid is concentrated, the waste liquid needs to be heated in advance to evaporate and separate the water in the waste liquid. However, in the prior art, the waste liquid is not uniformly heated in the tank, which requires a large amount of heat, and the hot steam separated by heating is usually directly discharged, causing waste of heat energy. UTILITY MODEL CONTENTS

[0004] The utility model discloses a coking desulfurization waste liquid superconcentration preparation and heat energy comprehensive recovery device, which solves the problem of uneven heating of waste liquid in the tank in the prior art, large amount of heat required for heating, and waste of heat energy caused by direct discharge of hot steam separated by heating.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a coking desulfurization waste liquid superconcentration preparation and heat energy comprehensive recovery device, comprising a first evaporation tank and a second evaporation tank, a cavity is formed in the inside of the first evaporation tank, a base is fixedly connected to the bottom of the first evaporation tank, a supporting column is fixedly connected to the bottom of the base, a water inlet pipe is fixedly connected to one side of the outer wall of the first evaporation tank, a drain pipe is fixedly connected to the bottom of the first evaporation tank, a steam pipe is fixedly connected to the top of the first evaporation tank, a storage tank is arranged in the inside of the first evaporation tank, a feeding pipe is fixedly connected to the top of the storage tank, a discharge pipe is fixedly connected to the bottom of the outer wall of the storage tank, and a heater is fixedly connected to the bottom of the first evaporation tank.

[0006] Preferably, a stable frame is fixedly installed on the surface of the storage tank, and the side surface of the stable frame is fixedly connected to the inner wall of the cavity.

[0007] Preferably, an electric heating copper pipe is fixedly installed at the bottom of the cavity, the storage tank is located at the top of the electric heating copper pipe, and the input end of the electric heating copper pipe is electrically connected to the output end of the heater.

[0008] Preferably, one end of the feeding pipe and the discharging pipe is located outside the first evaporation tank, and a heat preservation plate is fixedly installed on the inner wall of the cavity.

[0009] Preferably, a flow guide pipe is fixedly connected to the top end of the outer wall of the storage tank, an electromagnetic valve is fixedly installed on one end of the surface of the flow guide pipe, and one side of the flow guide pipe is located inside the second evaporation tank.

[0010] Preferably, a safety valve is fixedly installed on the surface of the steam pipe, and a pressure gauge is fixedly connected to one side of the safety valve.

[0011] Preferably, the first evaporation tank has the same structure as the second evaporation tank.

[0012] Compared with the prior art, the device has the advantages and positive effects that,

[0013] 1. In the device, the electric heating copper pipe is installed in the first evaporation tank, water is added into the first evaporation tank, the bottom end of the storage tank is soaked in the water, the heater is started to heat the cold water, the heat is transferred from the hot water to the inside of the storage tank, the waste liquid in the storage tank is evenly heated, and the evaporation speed of the water in the waste liquid is accelerated.

[0014] 2. In the device, the flow guide pipe is connected between the first evaporation tank and the second evaporation tank, one end of the flow guide pipe is located inside the storage tank, the water in the waste liquid in the storage tank is evaporated and flows into the second evaporation tank through the flow guide pipe, the steam circulates around the storage tank in the second evaporation tank, and the inside of the storage tank is heated and concentrated, so that the steam is used twice. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 a main body perspective structure schematic view of the device is provided for the device;

[0016] Figure 2 a first evaporation tank cross section structure schematic view of the device is provided for the device;

[0017] Figure 3 an A structure enlarged schematic view of the device is provided for the device;

[0018] Figure 4 a flow guide pipe connection structure schematic view of the device is provided for the device.

[0019] Legend: 1, the first evaporation tank; 101, the cavity; 11, the base; 12, the support column; 13, the water inlet pipe; 14, the drain pipe; 15, the steam pipe; 151, the safety valve; 152, the pressure gauge; 17, the heat preservation plate; 2, the second evaporation tank; 3, the storage tank; 31, the feeding pipe; 32, the discharge pipe; 33, the stable frame; 34, the flow guide pipe; 4, the heater; 41, the electric heating copper pipe; 5, the electromagnetic valve. DETAILED DESCRIPTION

[0020] In order to enable the above-mentioned purpose, features and advantages of the present application to be more clearly understood, the present application will be further described below with reference to the drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be practiced in other ways different from those described herein, therefore, the present application is not limited to the specific embodiments disclosed in the following description. EMBODIMENT

[0022] As Figures 1-4 shown, the present application provides a technical scheme: coking desulfurization waste liquid super-concentration preparation and heat energy comprehensive recovery device, including first evaporation tank 1 and second evaporation tank 2, the inside of first evaporation tank 1 is provided with cavity 101, the bottom of first evaporation tank 1 is fixedly connected with base 11, the bottom of base 11 is fixedly connected with support column 12, one side of the outer wall of first evaporation tank 1 is fixedly connected with water inlet pipe 13, the bottom of first evaporation tank 1 is fixedly connected with drain pipe 14, the top of first evaporation tank 1 is fixedly connected with steam pipe 15, the inside of first evaporation tank 1 is provided with storage tank 3, the top of storage tank 3 is fixedly connected with feeding pipe 31, the bottom end of the outer wall of storage tank 3 is fixedly connected with discharge pipe 32, the bottom of first evaporation tank 1 is fixedly connected with heater 4, the surface of storage tank 3 is fixedly installed with stable frame 33, the side surface of stable frame 33 is fixedly connected with the inner wall of cavity 101, the bottom of cavity 101 is fixedly installed with electric heating copper pipe 41, storage tank 3 is located at the top of electric heating copper pipe 41, the input end of electric heating copper pipe 41 is electrically connected with the output end of heater 4, one end of feeding pipe 31 and discharge pipe 32 is located outside first evaporation tank 1, the inner wall of cavity 101 is fixedly installed with heat preservation plate 17.

[0023] In this embodiment, the desulfurization waste liquid is added to the top of the feeding pipe 31 so that the waste liquid is stored inside the storage tank 3. Then, water is added to the water inlet pipe 13 and the water inlet pipe 13 is closed so that the bottom of the storage tank 3 is immersed in water. Then, the heater 4 is started to heat the electric heating copper tube 41, and at the same time, the water source temperature at the bottom of the cavity 101 is increased. The water in the hot water will evaporate under high temperature, and the high-temperature steam fills the cavity 101 to heat the outer wall of the storage tank 3. At the same time, the heat of the hot water at the bottom is transferred to the bottom of the storage tank 3, so that the waste liquid inside the storage tank 3 is heated evenly, and the evaporation rate of water in the waste liquid is accelerated. The insulation board 17 can reduce the loss of steam heat. Example

[0024] like Figures 1-4 As shown, a guide tube 34 is fixedly connected to the top of the outer wall of the storage tank 3, and a solenoid valve 5 is fixedly installed on one end of the surface of the guide tube 34. One side of the guide tube 34 is located inside the second evaporation tank 2. A safety valve 151 is fixedly installed on the surface of the steam pipe 15, and a pressure gauge 152 is fixedly connected to one side of the safety valve 151. The structure of the first evaporation tank 1 is the same as that of the second evaporation tank 2.

[0025] In this embodiment, when the steam pressure inside the first evaporation tank 1 is too high, the safety valve 151 automatically opens when subjected to the excessive pressure, allowing some high-temperature steam to flow out of the steam pipe 15. When the pressure inside the first evaporation tank 1 returns to normal, the safety valve 151 closes to prevent steam from overflowing and causing heat loss. When the water in the waste liquid inside the storage tank 3 is heated and evaporated, the water vapor rises and flows into the second evaporation tank 2 through the guide pipe 34. The desulfurized waste liquid is added to the storage tank 3 inside the second evaporation tank 2, thereby evaporating and concentrating it. The principle of regulating the internal pressure is the same as that of the first evaporation tank 1.

[0026] The working principle of this embodiment is as follows: desulfurization waste liquid is added to the storage tank 3, and then water is added to the water inlet pipe 13 and the water inlet pipe 13 is closed. The heater 4 is started to increase the temperature of the water source. The water in the hot water evaporates under the high temperature state, and the high-temperature steam fills the cavity 101 to heat the outer wall of the storage tank 3, and the hot water at the bottom heats the bottom of the storage tank 3, so that the waste liquid in the storage tank 3 is heated evenly, and the evaporation rate of the water in the waste liquid is accelerated. When the steam pressure in the first evaporation tank 1 is too high, the safety valve 151 will automatically open when it is subjected to excessive pressure, reducing the steam pressure in the first evaporation tank 1. The same is true for the second evaporation tank 2. The water in the waste liquid in the storage tank 3 is heated and evaporated and flows into the second evaporation tank 2 from the guide pipe 34. The desulfurization waste liquid is added to the storage tank 3 inside the second evaporation tank 2, and it can be evaporated and concentrated, thereby reusing the steam.

[0027] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in other forms, and any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields with equivalent changes, but any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application without departing from the technical scheme of the present application still falls within the protection scope of the present application.

Claims

1. A device for super-concentration and comprehensive recovery of heat energy from coking desulfurization waste liquid, comprising a first evaporation tank (1) and a second evaporation tank (2), characterized in that: The inside of the first evaporation tank (1) is provided with a cavity (101), the bottom of the first evaporation tank (1) is fixedly connected with a base (11), the bottom of the base (11) is fixedly connected with a supporting column (12), one side of the outer wall of the first evaporation tank (1) is fixedly connected with a water inlet pipe (13), the bottom of the first evaporation tank (1) is fixedly connected with a drain pipe (14), the top of the first evaporation tank (1) is fixedly connected with a steam pipe (15), the inside of the first evaporation tank (1) is provided with a storage tank (3), the top of the storage tank (3) is fixedly connected with a feeding pipe (31), the bottom end of the outer wall of the storage tank (3) is fixedly connected with a discharging pipe (32), and the bottom of the first evaporation tank (1) is fixedly connected with a heater (4).

2. The device for super-concentration and heat energy comprehensive recovery of coking desulfurization waste liquid according to claim 1, characterized in that: The surface of the storage tank (3) is fixedly connected with a stable frame (33), and the side surface of the stable frame (33) is fixedly connected with the inner wall of the cavity (101).

3. The device for super-concentration and heat energy comprehensive recovery of coking desulfurization waste liquid according to claim 1, characterized in that: The bottom of the cavity (101) is fixedly connected with an electric heating copper pipe (41), the storage tank (3) is located at the top of the electric heating copper pipe (41), and the input end of the electric heating copper pipe (41) is electrically connected with the output end of the heater (4).

4. The device for super-concentration and heat energy comprehensive recovery of coking desulfurization waste liquid according to claim 1, characterized in that: One end of the feeding pipe (31) and the discharging pipe (32) is located outside the first evaporation tank (1), and the inner wall of the cavity (101) is fixedly connected with a heat preservation plate (17).

5. The device for super-concentration and heat energy comprehensive recovery of coking desulfurization waste liquid according to claim 1, characterized in that: The top end of the outer wall of the storage tank (3) is fixedly connected with a flow guide pipe (34), one end of the surface of the flow guide pipe (34) is fixedly connected with an electromagnetic valve (5), and one side of the flow guide pipe (34) is located in the inside of the second evaporation tank (2).

6. The device for super-concentration and heat energy comprehensive recovery of coking desulfurization waste liquid according to claim 1, characterized in that: The surface of the steam pipe (15) is fixedly connected with a safety valve (151), and one side of the safety valve (151) is fixedly connected with a pressure gauge (152).

7. The device for super-concentration and heat energy comprehensive recovery of coking desulfurization waste liquid according to claim 1, characterized in that: The structure of the first evaporation tank (1) is the same as that of the second evaporation tank (2).

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