CN217699127U

CN217699127U - H acid continuous denitration equipment

Info

Publication number: CN217699127U
Application number: CN202221321253.5U
Authority: CN
Inventors: 田明军; 安建平; 邓永发; 郑友康; 易吕平
Original assignee: CHUYUAN HIGH-NEW TECHNOLOGY GROUP CO LTD
Current assignee: CHUYUAN HIGH-NEW TECHNOLOGY GROUP CO LTD
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-11-01
Anticipated expiration: 2032-05-30

Abstract

The utility model relates to the technical field of H acid denitration, in particular to H acid continuous denitration equipment, which comprises a mixing storage tank, a reaction tank, a temperature control device, a feeding pipe, a discharging pipe and an exhaust device; the reaction tank is arranged on the support frame, the inner cavity of the reaction tank is divided into three layers by a partition plate, and a valve hole are arranged on the partition plate; the top of the reaction tank is provided with three groups of water inlet pipes which respectively extend to the three-layer inner cavity of the tank body, and the tail end of each water inlet pipe is provided with a jet orifice; each layer of the inner cavity of the reaction tank is provided with a feeding pipe, and all the feeding pipes are communicated with a discharging pipe of the mixing storage tank; a flowmeter is arranged at a discharge pipe of the mixing storage tank; each layer of the inner cavity of the reaction tank is communicated with an exhaust device, and the exhaust device is communicated with a condenser; the reaction tank body is provided with a temperature control device, and the bottom of the reaction tank is provided with a discharge pipe and a sewage discharge hole. The utility model discloses an improve the efficiency of sour denitration work of H, avoided harmful gas inorganization to discharge simultaneously.

Description

H acid continuous denitration equipment

Technical Field

The utility model relates to an sour denitration technical field of H, concretely relates to sour continuous denitration of H is equipped.

Background

H acid is an important dye intermediate and is mainly used for producing reactive dyes, acid dyes and direct dyes. The main process for producing H acid at present uses refined naphthalene as raw material, and comprises the steps of sulfonation, nitration, denitration, ammonia water neutralization, iron powder reduction, filtration, sodium chloride salting out, filtration, alkali fusion, acid precipitation, filtration and the like. In the ammonia water neutralization step, a large amount of ammonium sulfate is carried in the solution, so that the wastewater in the sodium chloride salting-out step is wastewater containing a large amount of ammonium sulfate, sodium chloride and organic matters, and when the wastewater is subjected to subsequent treatment, the concentrated salt is mixed salt of ammonium sulfate and sodium chloride, so that the resource utilization of the salt is difficult to realize.

The denitration process is an important step in the existing H acid preparation production process, the traditional denitration process needs to be carried out in a denitration kettle in an intermittent mode, needs to be carried out in a dropwise adding mode, and is long in reaction time and low in efficiency. Patent document CN206082133U discloses a continuous denitration system for H acid production, which uses a filler to uniformly distribute feed liquid and water to realize continuous denitration, but after a long time, the generated heat can be collected and only carried out through an exhaust port or a discharge port, which affects denitration quality.

Disclosure of Invention

The utility model aims to provide an: the continuous H acid denitration equipment is accurate in denitration material proportion, high in reaction speed, stable in temperature control and excellent in product quality.

The technical scheme of the utility model is that:

the H acid continuous denitration device comprises a mixing storage tank, a reaction tank, a temperature control device, a feeding pipe, a discharging pipe and an exhaust device; the method is characterized in that: the reaction tank is arranged on the support frame, the inner cavity of the reaction tank is divided into three layers by a partition plate, and a valve hole are arranged on the partition plate; the top of the reaction tank is provided with three groups of water inlet pipes which respectively extend to the three-layer inner cavity of the tank body, and the tail end of each water inlet pipe is provided with a jet orifice; each layer of the inner cavity of the reaction tank is provided with a feeding pipe, and all the feeding pipes are communicated with a discharging pipe of the mixed storage tank; a flowmeter is arranged at a discharge pipe of the mixing storage tank; each layer of the inner cavity of the reaction tank is communicated with an exhaust device, and the exhaust device is communicated with a condenser; the reaction tank body is provided with a temperature control device, and the bottom of the reaction tank is provided with a discharge pipe and a sewage discharge hole.

Furthermore, the mixing storage tank is a metering storage tank, nitrifying materials are filled in the mixing storage tank, and the nitrifying materials and the water inflow of the water inlet pipe enter the reaction tank in proportion.

Furthermore, the feeding pipes are provided with independent switch devices.

Furthermore, the water inlet pipes are provided with flow meters, the three groups of water inlet pipes are respectively provided with respective switch devices, and the jet orifices are atomizing nozzles.

Furthermore, sealing devices are arranged between the water inlet pipe and the partition plate.

Furthermore, a sealing gasket is arranged between a valve and a valve hole on the partition plate, the valve is controlled to be opened and closed through a valve rod, the valve is in a closed state during the denitration reaction, and the valve is in an open state after the denitration reaction is completed.

Furthermore, the temperature control device comprises a jacket layer on the periphery of the reaction tank body and a temperature sensor inside the reaction tank, the temperature sensor is connected with a temperature controller, and the jacket layer is connected with the heating equipment.

The beneficial effects of the utility model reside in that:

according to the H acid continuous denitration device, the nitrified materials are independently metered through the mixing storage tank, and then the nitration reaction is respectively completed in the layering of the reaction tank body, so that the metering is more accurate, and the mixing is more sufficient;

particularly, the water quantity entering each layer of the reaction tank body is proportional to the nitrified material through the metering of the flow meter of the water inlet pipe, the water sprayed out of the atomizing nozzle is more uniformly mixed with the nitrified material, and the reaction speed is improved;

the temperature control device monitors the temperature in the reaction tank, and can regulate and control the temperature in the reaction tank to the optimal temperature of the denitration reaction through the jacket layer;

the exhaust device timely exhausts gas and heat generated in the reaction, and the gas and the heat are cooled by the condenser and then are subjected to environmental protection treatment, so that pollution is reduced;

denitration reaction is carried out through the weight layering to the material of nitrifying, can make the reactant mix more fully, can in time release the heat and the harmful gas of denitration in-process reaction simultaneously, improves the efficiency of denitration work, has avoided the unorganized emission of harmful gas simultaneously, causes pollution and destruction to the environment.

Drawings

FIG. 1 is a schematic view of the present invention;

fig. 2 is a partial enlarged structural schematic diagram of the tail end of the water inlet pipe.

In the figure: 1. a reaction tank; 2. a mixing tank; 3. a base; 4. a feed pipe; 5. a water inlet pipe; 6. an exhaust device; 7. a jacket layer; 8. a discharge pipe; 9. a sewage draining hole; 10. a condenser; 11. a flow meter; 12. a partition plate; 13. a valve; 14. a valve stem; 15. an atomizing nozzle.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

As shown in the attached drawing, the H acid continuous denitration device comprises a mixing storage tank 2, a reaction tank 1, a temperature control device, a feeding pipe 4, a discharging pipe 8 and an exhaust device 6; the reaction tank 1 is arranged on the support frame 3, the inner cavity of the reaction tank 1 is divided into three layers by a partition plate 12, and the partition plate 12 is provided with a valve 13 and a valve 13 hole; the top of the reaction tank 1 is provided with three groups of water inlet pipes 5, the three groups of water inlet pipes 5 respectively extend to the three-layer inner cavity of the tank body, and the tail end of each water inlet pipe 5 is provided with a jet orifice; each layer of the inner cavity of the reaction tank 1 is provided with a feeding pipe 4, and all the feeding pipes 4 are communicated with a discharging pipe 8 of the mixing storage tank 2; a flowmeter 11 is arranged at the discharge pipe 8 of the mixing storage tank 2; each layer of the inner cavity of the reaction tank 1 is communicated with an exhaust device 6, and the exhaust device 6 leads to a condenser 10; a temperature control device is arranged on the tank body of the reaction tank 1, and a discharge pipe 8 and a sewage discharge hole 9 are arranged at the bottom of the reaction tank 1.

The mixing storage tank 2 is a metering storage tank, nitrifying materials are filled in the mixing storage tank 2, and the nitrifying materials and the water inflow of the water inlet pipe 5 enter the reaction tank 1 in proportion.

The feed pipe 4 is provided with a separate switch device.

The water inlet pipe 5 is provided with a flowmeter 11, the three groups of water inlet pipes 5 are respectively provided with respective switch devices, and the jet orifice is an atomizing nozzle 15.

And sealing devices are arranged between the water inlet pipe 5 and the partition plate 12.

A sealing gasket is arranged between the valve 13 on the partition plate 12 and the hole of the valve 13, the valve 13 is controlled to be opened and closed through the valve 13 rod, the valve 13 is in a closed state during the denitration reaction, and the valve is in an opened state after the denitration reaction is finished.

The temperature control device comprises a jacket layer 7 on the periphery of the reaction tank 1 and a temperature sensor inside the reaction tank 1, the temperature sensor is connected with a temperature controller, and the jacket layer 7 is connected with heating equipment.

According to the H acid continuous denitration device, the nitrified materials are independently metered through the mixing storage tank 2, and then the nitrification reaction is respectively completed in the layering of the reaction tank 1, so that the metering is more accurate, and the mixing is more sufficient;

particularly, the water quantity entering each layer of the reaction tank 1 is proportional to the nitrified material through the water inlet pipe 5 and the flow meter 11, the water sprayed out of the atomizing nozzle 15 is more uniformly mixed with the nitrified material, and the reaction speed is improved;

the temperature control device monitors the temperature in the reaction tank 1, and can regulate and control the temperature in the reaction tank 1 to the optimal denitration reaction temperature through the jacket layer 7;

the exhaust device 6 timely exhausts gas and heat generated in the reaction, and after the gas and the heat are cooled by the condenser 10, the gas and the heat are treated in an environment-friendly way, so that the pollution is reduced;

In the specific implementation:

firstly, calculating the volume or weight required in each reaction according to the required ratio of the nitrified material to water, and putting the nitrified material into a mixing storage tank 2 for metering;

observing the temperature monitored by the temperature control device, and adjusting the internal temperature of the reaction tank 1 to the required temperature through the jacket layer 7 and the heating equipment; opening an exhaust device 6 to ensure that the reaction tank 1 and the exhaust device 6 are in a communication state;

opening a feeding pipe 4 between a mixing storage tank 2 and a reaction tank 1, firstly opening the feeding pipe 4 corresponding to the uppermost layer of the reaction tank 1, feeding nitrified materials into the uppermost layer of an inner cavity of the reaction tank 1, observing a flow meter 11 on a discharge hole of the mixing storage tank 2, and controlling the feeding amount of the nitrified materials into the reaction tank 1; simultaneously, the water inlet pipe 5 corresponding to the uppermost layer is opened, the water inlet amount is controlled through a flowmeter 11 on the water inlet pipe 5, the water is sprayed into the reaction tank 1 through an atomizing nozzle 15, and the water inlet amount is in a required proportion to the nitrified material inlet amount;

in the same way, the feeding and mixing of the nitrifying materials and the water are completed in the inner cavities of the second layer and the third layer of the reaction tank 1 in sequence; at this time, the valves 13 on the partition plate 12 in the reaction tank 1 are all in a closed state;

keeping a certain temperature, after the denitration reaction of the materials in the reaction tank 1 is finished, lifting upwards through the valve rod 14, opening the valve 13 on the partition plate 12, enabling the inner cavity of the reaction tank 1 to be in a communicated state, and enabling the reacted materials to sequentially flow downwards from the hole of the valve 13;

gas and heat generated in the reaction process can be discharged from the exhaust device 6 at any time, and are subjected to environment-friendly treatment after being cooled by the condenser 10;

and finally, opening the discharge pipe 8, and allowing the reacted materials to flow out of the discharge pipe 8 to enter a subsequent flow.

The drain hole 9 removes the residue and impurities after the retort 1 is used for a period of time.

The above description is only a preferred embodiment of the present invention, and the above illustration does not limit the essence of the present invention in any form, and any simple modification or variation of the above embodiments based on the technical essence of the present invention and equivalent embodiments which may be changed or modified to equivalent variations by using the technical essence of the present invention by those of ordinary skill in the art after reading the present description still belong to the technical solution of the present invention without departing from the essence and scope of the present invention.

Claims

The continuous denitration device for the H acid comprises a mixing storage tank (2), a reaction tank (1), a temperature control device, a feeding pipe (4), a discharging pipe (8) and an exhaust device (6); the method is characterized in that: the reaction tank (1) is arranged on the support frame (3), the inner cavity of the reaction tank (1) is divided into three layers by a partition plate (12), and a valve (13) hole are arranged on the partition plate (12); the top of the reaction tank (1) is provided with three groups of water inlet pipes (5), the three groups of water inlet pipes (5) respectively extend to the three-layer inner cavity of the tank body, and the tail end of each water inlet pipe (5) is provided with a jet orifice; each layer of the inner cavity of the reaction tank (1) is provided with a feeding pipe (4), and all the feeding pipes (4) are communicated with a discharging pipe (8) of the mixing storage tank (2); a flowmeter (11) is arranged at a discharge pipe (8) of the mixing storage tank (2); each layer of the inner cavity of the reaction tank (1) is communicated with an exhaust device (6), and the exhaust device (6) is communicated with a condenser (10); the reaction tank (1) is provided with a temperature control device, and the bottom of the reaction tank (1) is provided with a discharge pipe (8) and a sewage discharge hole (9).
2. The H acid continuous denitration equipment of claim 1, characterized in that: the mixing storage tank (2) is a metering storage tank, the mixing storage tank (2) is internally provided with nitrifying materials, and the nitrifying materials and the water inflow of the water inlet pipe (5) enter the reaction tank (1) in proportion.
3. The H acid continuous denitration equipment of claim 1, characterized in that: the feeding pipe (4) is provided with an independent switch device.
4. The H acid continuous denitration equipment of claim 1, characterized in that: the water inlet pipe (5) is provided with a flowmeter (11), the three groups of water inlet pipes (5) are respectively provided with respective switch devices, and the jet orifice is an atomizing nozzle (15).
5. The H acid continuous denitration equipment of claim 1, characterized in that: and sealing devices are arranged between the water inlet pipe (5) and the partition plate (12).
6. The H acid continuous denitration equipment of claim 5, characterized in that: a sealing gasket is arranged between the valve (13) on the partition plate (12) and the hole of the valve (13), the valve (13) is controlled to be opened and closed through the valve (13) rod, the valve (13) is in a closed state during the denitration reaction, and the valve is in an opened state after the denitration reaction is finished.
7. The H acid continuous denitration equipment of claim 1, characterized in that: the temperature control device comprises a jacket layer (7) on the periphery of the reaction tank (1) and a temperature sensor inside the reaction tank (1), the temperature sensor is connected with a temperature controller, and the jacket layer (7) is connected with heating equipment.