CN217614676U

CN217614676U - H acid continuous nitration equipment

Info

Publication number: CN217614676U
Application number: CN202221394851.5U
Authority: CN
Inventors: 廖杰; 田明军; 陈红兵; 刘立; 李小阳; 曾炎花
Original assignee: CHUYUAN HIGH-NEW TECHNOLOGY GROUP CO LTD
Current assignee: CHUYUAN HIGH-NEW TECHNOLOGY GROUP CO LTD
Priority date: 2022-06-07
Filing date: 2022-06-07
Publication date: 2022-10-21
Anticipated expiration: 2032-06-07

Abstract

The utility model relates to an equipment is nitrified in succession to H acid, including reaction tube and cooling channel, cooling channel is located the reaction tube, offers cooling channel's reaction tube through the centre and carries out the reaction of flowing, through the thickness that reduces mixed liquid, increases heat radiating area, makes things convenient for thermal timely loss, compares because the heat of mixing production can not in time release, can only reduce the preparation speed and make the slow loss of heat, through the utility model discloses can carry out the flow reaction of two kinds of raw materials of nitric acid and sulfonated liquid, realize lasting reaction and continuous preparation, work efficiency is stable, has effectively solved the problem that the heat can not in time release in the present H acid preparation process.

Description

H acid continuous nitration equipment

Technical Field

The utility model belongs to the technical field of H sour production equipment, in particular to H sour continuous nitrification is equipped.

Background

The continuous nitration and denitration process is an important step in the existing production process for preparing the H acid, and the nitric acid and the sulfonated liquid need to be fully mixed in the nitration reaction for reaction. At present, the mixing and nitration reactions are mainly carried out in a reaction kettle, namely, raw materials of nitric acid and sulfonated liquid are introduced into the reaction kettle, and then a stirring device in the reaction kettle is used for stirring so as to achieve full mixing and reaction. However, because the nitration reaction is a strong exothermic process, a large amount of heat can be released, a reaction kettle is used for directly carrying out a mixing reaction, a large amount of nitric acid and a sulfonation liquid are mixed for a short time to generate a large amount of heat, and the heat generated by mixing cannot be released in time, so that the feeding speed of the nitric acid has to be reduced, the production efficiency of the nitration process is influenced, the yield and the yield of the final H acid are further influenced, and the safety of a reaction system can be influenced under severe conditions.

Disclosure of Invention

The utility model aims to solve the technical problem that H acid continuous nitrification equipment is provided to solve the problem that heat can not be released in time in the current H acid preparation process.

In order to solve the above problem, the utility model adopts the following technical scheme:

the H acid continuous nitration equipment comprises a reaction tube, two ends of the reaction tube are sealed, a cooling channel is arranged in the reaction tube, two ends of the cooling channel are respectively communicated with two ends of the reaction tube, two feed inlets are formed in the first end of the reaction tube, and a discharge outlet is formed in the second end of the reaction tube.

Furthermore, a Y-shaped pipe is arranged in the reaction pipe, and two openings at the upper end of the Y-shaped pipe are respectively communicated with the two feed inlets.

Furthermore, a guide plate is arranged on the inner wall of the reaction tube, the guide plate is perpendicular to the inner wall of the reaction tube, one side of the guide plate is obliquely arranged towards the discharge hole, and the number of the guide plates is at least one.

Furthermore, a first cooling pipe is spirally arranged on the outer peripheral surface of the reaction pipe.

Furthermore, one end of the discharge port, which is far away from the reaction tube, is provided with a reaction kettle, and the reaction kettle is communicated with the discharge port.

Further, the outer circle of reation kettle is equipped with the second cooling tube, all communicates with the first end of second cooling tube with the one end that is close to the discharge gate on the cooling channel on the first cooling tube.

Furthermore, the second end of the second cooling pipe is communicated with a cooling box, the cooling box is communicated with a water pump, and one end, far away from the cooling box, of the water pump is communicated with the first cooling pipe and one end, close to the feed inlet, of the cooling channel respectively.

The utility model discloses what obtain is showing beneficial effect:

1. the utility model discloses sour equipment of nitrifying in succession of H, including reaction tube and cooling channel, cooling channel is located the reaction tube, offers cooling channel's reaction tube through the centre and flows the reaction, through the thickness that reduces mixed liquid, increases heat radiating area, makes things convenient for thermal timely loss, compares because the heat that mixes the production can not in time release, can only reduce the preparation speed and make the slow loss of heat, through the utility model discloses can carry out the flow reaction of two kinds of raw materials, realize lasting reaction and lasting preparation, work efficiency is stable, has effectively solved the problem that the heat can not in time release in present H sour preparation process.

2. In order to accelerate the rapid heat flow away, the first cooling pipe is spirally arranged on the peripheral surface of the reaction pipe, and through the arrangement of the cooling channel in the reaction pipe and the first cooling pipe outside the reaction pipe, when heat is generated in the reaction pipe, the cooling channel and the first cooling pipe are mutually matched to take away the heat generated by the inner wall and the peripheral surface of the reaction pipe simultaneously.

3. Reation kettle's setting can be further make between two kinds of raw materials misce bene, and this moment because two kinds of raw materials have carried out preliminary mixing, the heat has run off a majority, has effectively reduced reation kettle's operating pressure, and the setting of the outer second cooling tube of reation kettle can help the heat loss in the reation kettle simultaneously, and convenient continuation prepares.

4. The cooling box is arranged to cool the cooling liquid absorbing heat, and the cooling liquid can be reused after being cooled conveniently through the communication between the water pump and the first cooling pipe and the cooling channel, so that the recycling of the cooling liquid is realized, the resource recycling rate is increased, and the enterprise production cost is reduced.

Drawings

FIG. 1 is a schematic three-dimensional structure diagram of an acid continuous nitrification apparatus according to embodiment 1 of the present invention;

FIG. 2 is a schematic sectional view of the acid continuous nitrification apparatus of embodiment 1 of the present invention;

FIG. 3 is a schematic view of the structure of the continuous nitration plant for H acid in example 2 of the present invention;

FIG. 4 is a schematic view of the structure of the continuous nitrification apparatus for H acid in the embodiment of the present invention.

In the attached drawing, 1-reaction tube, 2-cooling channel, 3-feeding inlet, 4-discharging outlet, 5-Y type tube, 6-guide plate, 7-first cooling tube, 8-reaction kettle, 9-second cooling tube, 10-cooling box and 11-water pump.

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.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over 8230," "upper surface," "above," and the like may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; above" may include both orientations "at 8230; \8230; above" and "at 8230; \8230; below". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, so that the scope of the present application is not to be construed as being limited.

Example 1

As shown in figures 1 and 2, the H acid continuous nitrification equipment comprises a reaction tube 1, two ends of the reaction tube 1 are sealed, a cooling channel 2 is arranged in the reaction tube 1, two ends of the cooling channel 2 are respectively communicated with two ends of the reaction tube 1, two feed inlets 3 are arranged at the first end of the reaction tube 1, and a discharge outlet 4 is arranged at the second end of the reaction tube 1.

Further, a Y-shaped pipe 5 is arranged in the reaction pipe 1, and two openings at the upper end of the Y-shaped pipe 5 are respectively communicated with the two feed inlets 3.

Further, be equipped with guide plate 6 on the 1 inner wall of reaction tube, guide plate 6 perpendicular to 1 inner wall of reaction tube sets up, and guide plate 6 one side sets up towards the slope of discharge gate 4, and the quantity of guide plate 6 is at least one.

Specifically, the reaction tube 1 is a hollow tube body with two closed ends, a cooling channel 2 for passing cooling liquid is arranged in the reaction tube 1, two ends of the cooling channel 2 are respectively communicated with two closed ends of the reaction tube 1, the cooling channel 2 and the reaction tube 1 are coaxially arranged, the first end of the reaction tube 1 is provided with two feed inlets 3, the second end of the reaction tube 1 is provided with a discharge outlet 4, the two feed inlets 3 are used for feeding two different raw materials (the two different raw materials are respectively nitric acid and sulfonated liquid, and the raw materials are used for uniformly replacing the nitric acid and the sulfonated liquid) into the reaction tube 1, the discharge outlet 4 is arranged for discharging mixed liquid which is subjected to mixing reaction to a certain degree in the reaction tube 1, and a Y-shaped tube 5 communicated with the two feed inlets 3 is arranged in the reaction tube 1, two kinds of raw materialss that can get into from two feed inlets 3 through two openings of Y type pipe 5 upper ends are discharged by the opening of Y type pipe 5 lower extreme after mixing, conveniently react, in order to strengthen the mixed degree between two kinds of raw materialss, be equipped with guide plate 6 on 1 inner wall of reaction tube perpendicularly, guide plate 6's setting can carry out the stopping of certain degree to 1 mixed liquid through the reaction tube, and then make the intraductal further mixture of mixed liquid of projection, guide plate 6 one side sets up towards discharge gate 4 slopes and can reduce the influence of guide plate 6 to the mixed liquid velocity of flow, can make the further mixture of mixed liquid simultaneously, guide plate 6's quantity is a plurality of in this embodiment, 6 evenly distributed of a plurality of guide plates are intraductal in the projection.

The theory of operation, place reaction tube 1 vertically, it has the coolant liquid to communicate with 2 both ends of cooling channel respectively and the pipeline and the cooling channel 2 internal circulation after the intercommunication through the pipeline, two kinds of raw materials that will carry out mixing reaction are respectively through pipeline and two feed inlets 3 intercommunication, the equipment intercommunication that needs to use on next step with discharge gate 4, two kinds of raw materials mix together and fall into reaction tube 1 under Y type pipe 5's effect when entering reaction tube 1 through two feed inlets 3 respectively, form mixed liquid after two kinds of raw materials mix, mixed liquid removes to discharge gate 4 under the effect of gravity, but in-process that mixed liquid falls down can make mixed liquid fall on guide plate 6 because guide plate 6's setting makes mixed liquid blockked or break up, carry out further mixture, the heat that two kinds of raw materials released after mixing can be taken away through the coolant liquid that flows in cooling channel 2, the heat also has reaction tube 1's outer wall to give off simultaneously, accelerate the heat loss speed of two kinds of raw materials after mixing.

To summer up, the utility model discloses a reaction tube 1 of seting up cooling channel 2 in the middle of flows the reaction, through reducing the thickness of mixed liquid, increases heat radiating area, makes things convenient for thermal timely loss, compares because the heat that mixes the production can not in time release, can only reduce the preparation speed and make the slow loss of heat, through the utility model discloses can carry out the flow reaction of two kinds of raw materials, realize lasting reaction and lasting preparation, work efficiency is stable, has effectively solved the problem that the heat can not in time release in the present H sour preparation process.

Example 2

As shown in fig. 3, the present embodiment is substantially the same as embodiment 1, and is further optimized from embodiment 1 in that a first cooling pipe 7 is spirally provided on the outer peripheral surface of the reaction tube 1.

Further, one end of the discharge port 4, which is far away from the reaction tube 1, is provided with a reaction kettle 8, and the reaction kettle 8 is communicated with the discharge port 4.

Furthermore, 8 outer circles of reation kettle are equipped with second cooling tube 9, and the one end that is close to discharge gate 4 on the cooling channel 2 on 7 of first cooling tube all communicates with 9 first ends of second cooling tube.

Specifically, in order to accelerate the dissipation of heat and accelerate the rapid flow away of heat, a first cooling pipe 7 is spirally arranged on the outer peripheral surface of a reaction pipe 1, and through the arrangement of a cooling channel 2 in the reaction pipe 1 and the first cooling pipe 7 outside the reaction pipe 1, when heat is generated in the reaction pipe 1, the cooling channel 2 and the first cooling pipe 7 are matched with each other to take away the heat generated by the inner wall and the outer peripheral surface of the reaction pipe 1 at the same time, so that the dissipation of the heat in the reaction pipe 1 is accelerated, and safety accidents caused by overhigh heat are avoided; meanwhile, in order to uniformly mix the two raw materials, the reaction is uniform, a reaction kettle 8 is communicated with a discharge port 4, a reaction tube 1 is arranged above the reaction kettle 8 through a frame body, the mixed liquid which is primarily mixed in the reaction tube 1 flows into the reaction kettle 8 through the discharge port 4 to be stirred and mixed, the two raw materials can be more uniformly mixed through the stirring of the reaction kettle 8, the two raw materials are primarily mixed in the reaction tube 1, a large amount of generated heat is dissipated, the pressure of the reaction kettle 8 can be reduced in a phase-changing manner, and the continuous and long-time operation is convenient to carry out; similarly, in order to avoid the operation influenced by the excessive temperature accumulated in the reaction kettle 8, the second cooling pipe 9 is spirally arranged on the outer wall of the reaction kettle 8, and cooling liquid flows through the second cooling pipe 9, so that heat generated in the reaction kettle 8 can be taken away, and the operation influenced by the excessive heat accumulated in the reaction kettle 8 is avoided; for the purpose of maximum utilization of resources, one end of the first cooling pipe 7 close to the discharge port 4 and one end of the cooling channel 2 close to the discharge port 4 are both communicated with the first end of the second cooling pipe 9, and under the condition that the operation of the reaction pipe 1 and the reaction kettle 8 is not influenced, the maximization of resource utilization, energy conservation and emission reduction are realized through secondary utilization of cooling liquid.

Example 3

As shown in fig. 4, the structure of the present embodiment is substantially the same as that of embodiment 2, and the present embodiment is further optimized based on embodiment 2, wherein a second end of the second cooling pipe 9 is communicated with a cooling box 10, a water pump 11 is communicated with the cooling box 10, and one end of the water pump 11 away from the cooling box 10 is respectively communicated with the first cooling pipe 7 and one end of the cooling passage 2 close to the inlet 3.

Specifically, for energy saving and emission reduction, increase the reuse rate of resource, second end intercommunication at second cooling tube 9 has cooling box 10, cooling box 10 is the water storage box, contain thermal coolant liquid and lower the temperature gradually in cooling box 10, but in order to accelerate the temperature decline of coolant liquid, can install cooling equipment additional outside cooling box 10, through the supplementary cooling of cooling equipment, the intercommunication has water pump 11 on cooling box 10, water pump 11 installs in cooling box 10 one side, the one end of water pump 11 principle cooling box 10 is respectively through pipeline and the one end intercommunication that first cooling tube 7 is close to feed inlet 3 and cooling channel 2 is close to feed inlet 3, cool down the thermal coolant liquid of absorption through cooling box 10 and the setting of cooling equipment, through the intercommunication of water pump 11 and first cooling tube 7 and cooling channel 2, the coolant liquid reuse after can conveniently cooling, realize the cyclic utilization of coolant liquid, increase the reuse rate of resource, reduce enterprise's manufacturing cost.

It should be noted that the present invention is not only suitable for the preparation of H acid, but also other related similar experiments can be applied to the present apparatus, but all fall into the technical scope to be protected by the present application.

Claims

H sour continuous nitrification is equipped, its characterized in that: including reaction tube (1), reaction tube (1) both ends are sealed, be equipped with cooling channel (2) in reaction tube (1), the both ends of cooling channel (2) respectively with reaction tube (1) both ends intercommunication, the first end of reaction tube (1) is equipped with two feed inlets (3), the second end of reaction tube (1) is equipped with one discharge gate (4).
2. The H acid continuous nitration equipment according to claim 1, characterized in that: and a Y-shaped pipe (5) is arranged in the reaction pipe (1), and two openings at the upper end of the Y-shaped pipe (5) are respectively communicated with the two feed inlets (3).
3. The H acid continuous nitration equipment according to claim 2, characterized in that: be equipped with guide plate (6) on reaction tube (1) inner wall, guide plate (6) perpendicular to reaction tube (1) inner wall sets up, guide plate (6) one side orientation discharge gate (4) slope sets up, the quantity of guide plate (6) is at least one.
4. The H acid continuous nitration equipment according to claim 3, characterized in that: the outer peripheral surface of the reaction tube (1) is spirally provided with a first cooling tube (7).
5. The H acid continuous nitration equipment according to claim 4, characterized in that: one end of the discharge port (4) far away from the reaction tube (1) is provided with a reaction kettle (8), and the reaction kettle (8) is communicated with the discharge port (4).
6. The H acid continuous nitration equipment according to claim 5, characterized in that: a second cooling pipe (9) is spirally arranged outside the reaction kettle (8), and one end of the first cooling pipe (7) and one end of the cooling channel (2) close to the discharge hole (4) are communicated with the first end of the second cooling pipe (9).
7. The H acid continuous nitrification equipment according to claim 6, characterized in that: the second end of the second cooling pipe (9) is communicated with a cooling box (10), the cooling box (10) is communicated with a water pump (11), and one end, far away from the cooling box (10), of the water pump (11) is communicated with one ends, close to the feed inlet (3), of the first cooling pipe (7) and the cooling channel (2) respectively.