CN209743119U - Four-in-one power compressor unit for nitric acid production - Google Patents

Abstract

The utility model belongs to the technical field of the nitric acid production technique and specifically relates to a four unification power compressor units are used in nitric acid production, including the unit case, the equal fixed mounting in bottom surface four corners has damper under the unit case, unit case upper end fixed mounting has the closing cap, and surface one side fixed mounting has heat transfer mechanism on the closing cap, bottom one side fixed mounting has steam compressor in the unit case, and steam compressor one end fixed mounting has nitrogen oxide gas compressor, and nitrogen oxide gas compressor one end fixed mounting has air compressor, and air compressor one end fixed mounting has tail gas expansion compressor, just tail gas expansion compressor, air compressor and the equal fixed mounting of nitrogen oxide gas compressor are in unit incasement bottom. This four unification power compressor units are used in nitric acid production can retrieve the heat transfer and recycle remaining steam to avoid the waste of the energy, the practicality is strong, is worth promoting.

Description

Four-in-one power compressor unit for nitric acid production

Technical Field

The utility model relates to a nitric acid production technical field especially relates to a four unification power compressor units are used in nitric acid production.

Background

At present, a 'double-pressurization method' process for producing 27 ten thousand tons of dilute nitric acid is a mainstream process for producing the dilute nitric acid, and a core device of the process is a nitric acid 'four-in-one' unit. The existing four-in-one unit maintains the power consumption of a gas compressor in the whole nitric acid production by using heat released by chemical reaction and energy discharged by recycled tail gas, but can also remain part of energy, and the energy is directly discharged by steam, so that energy waste can be caused. Therefore, in view of the above problems, improvement thereof is required.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a four-in-one power compressor unit for nitric acid production.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

The design is a four-in-one power compressor unit for nitric acid production, which comprises a unit box, wherein a damping mechanism is fixedly mounted at four corners of the bottom surface of the unit box, a sealing cover is fixedly mounted at the upper end of the unit box, a heat exchange mechanism is fixedly mounted on one side of the upper surface of the sealing cover, a steam compressor is fixedly mounted on one side of the bottom of the unit box, a nitrogen oxide gas compressor is fixedly mounted on one end of the steam compressor, an air compressor is fixedly mounted on one end of the nitrogen oxide gas compressor, a tail gas expansion compressor is fixedly mounted on one end of the air compressor, and the tail gas expansion compressor, the air compressor and the nitrogen oxide gas compressor are fixedly mounted on the bottom.

Preferably, the damping mechanism comprises a telescopic rod fixedly installed at one corner of the lower bottom surface of the unit box, an antiskid plate is fixedly installed at the lower end of the telescopic rod, a first spring is sleeved on the outer side of the telescopic rod, one end of the first spring is fixedly connected to the unit box, and the other end of the first spring is fixedly connected to the antiskid plate.

Preferably, the telescopic link is including two sleeves of difference fixed mounting on bottom surface one corner and antiskid ribbed tile under the unit case, two insert between the sleeve and be equipped with the loop bar, and loop bar upper end and lower extreme equally divide and do not extend to the sleeve intraductally and fixed mounting have the limiting plate, loop bar outside middle part cover is equipped with the second spring, and second spring upper end and lower extreme equally divide do not fixed connection on the sleeve pipe.

Preferably, heat transfer mechanism includes two pipelines of fixed mounting in closing cap upper surface one side, two the intercommunication has a plurality of heat exchange tubes between the pipeline, and heat exchange tube one side fixed mounting has the heat exchanger fin, and pipeline one side middle part intercommunication that is close to closing cap upper surface middle part has the spiral pipe, and spiral pipe one end extends to and has the breathing pipe directly over the closing cap upper surface middle part and the intercommunication, and the breathing pipe lower extreme runs through the closing cap and extends to unit incasement upper portion.

Preferably, the two sides of the inner wall of the unit box are fixedly provided with sound insulation boards.

The utility model provides a four unification power compressor units are used in nitric acid production, beneficial effect lies in: the four-in-one power compressor unit for nitric acid production combines a tail gas expansion compressor, an air compressor, a nitrogen oxide gas compressor and a steam compressor together to form a unit, which not only can improve mechanical efficiency, but also is a self-sufficient unit with self-sufficient energy, fully utilizes the heat emitted by chemical reaction in nitric acid production and the energy discharged by recovered tail gas, saves a large amount of energy, and through the mutual cooperation of various structures such as a heat exchange pipe, a pipeline, a heat exchange plate, a spiral pipe, an air suction pipe and the like, thereby being capable of recovering residual steam, and then carrying out heat exchange and recycling, thereby saving energy, avoiding waste, and the device also adds a damping mechanism, and through the mutual cooperation of various structures such as a sleeve rod, a sleeve pipe, a first spring, a second spring and the like, thereby greatly enhancing the damping performance of the device, the loss of each equipment of the unit is reduced, the service life of the unit is prolonged, and the unit has extremely strong practicability and is worth popularizing and using.

drawings

Fig. 1 is a schematic structural diagram of a four-in-one power compressor unit for nitric acid production according to the present invention.

Fig. 2 is a top view of a four-in-one power compressor unit for nitric acid production according to the present invention.

Fig. 3 is the structure schematic diagram of the telescopic rod of the four-in-one power compressor unit for nitric acid production provided by the utility model.

In the figure: the device comprises a unit box 1, a first spring 2, an expansion rod 3, an antiskid plate 4, a tail gas expansion compressor 5, an air compressor 6, a nitrogen oxide gas compressor 7, a steam compressor 8, a sealing cover 9, an air suction pipe 10, a spiral pipe 11, a pipeline 12, a heat exchange fin 13, a heat exchange pipe 14, a sound insulation plate 15, a sleeve pipe 16, a loop bar 17, a second spring 18 and a limiting plate 19.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a four-in-one power compressor unit for nitric acid production comprises a unit box 1, wherein four corners of the lower bottom surface of the unit box 1 are fixedly provided with a damping mechanism, the damping mechanism comprises a telescopic rod 3 fixedly arranged at one corner of the lower bottom surface of the unit box 1, the telescopic rod 3 comprises two sleeves 16 fixedly arranged at one corner of the lower bottom surface of the unit box 1 and an anti-skid plate 4 respectively, a loop bar 17 is inserted between the two sleeves 16, the upper end and the lower end of the loop bar 17 respectively extend into the sleeves 16 and are fixedly provided with a limiting plate 19, the middle part of the outer side of the loop bar 17 is sleeved with a second spring 18, the upper end and the lower end of the second spring 18 are respectively and fixedly connected to the sleeves 16, the damage caused by the popping of the loop bar 17 out of the sleeves 16 due to vibration can be avoided through the limiting plate 19, so that the effect of protecting the loop bar 17 is effectively achieved, and relative telescopic motion can be generated between the loop bar 17 and, therefore, certain elastic buffer force can be generated, and the device can be damped.

3 lower extreme fixed mounting of telescopic link has antiskid ribbed tile 4, 3 outside covers of telescopic link are equipped with first spring 2, and 2 one end fixed connection of first spring are on unit's case 1, 2 other end fixed connection of first spring are on antiskid ribbed tile 4, through loop bar 17, sleeve pipe 16, mutually support between multiple structures such as first spring 2 and second spring 18, thereby can strengthen the device's damping performance greatly, the loss of each equipment of unit has been reduced, the service life thereof is prolonged, and extremely strong practicality is possessed, and through antiskid ribbed tile 4, can play skid-proof effect, thereby the device overall structure's stability and fastness have been improved, antiskid ribbed tile 4 specifically is the stainless steel antiskid ribbed tile.

The upper end of the unit box 1 is fixedly provided with a sealing cover 9, one side of the upper surface of the sealing cover 9 is fixedly provided with a heat exchange mechanism, the heat exchange mechanism comprises two pipelines 12 fixedly arranged on one side of the upper surface of the sealing cover 9, a plurality of heat exchange tubes 14 are communicated between the two pipelines 12, one side of each heat exchange tube 14 is fixedly provided with a heat exchange sheet 13, the middle part of one side of the pipeline 12 close to the middle part of the upper surface of the sealing cover 9 is communicated with a spiral tube 11, one end of the spiral tube 11 extends to the position right above the middle part of the upper surface of the sealing cover 9 and is communicated with an air suction tube 10, the lower end of the air suction tube 10 penetrates through the sealing cover 9 and extends to the upper part in the unit box 1, the unit box 1 is externally connected with a steam supply system for supplying steam in the whole nitric acid production process, the power consumption of the compressor in the whole nitric acid production, energy is wasted, and the residual steam can be recycled through the mutual matching among the heat exchange tube 14, the pipeline 12, the heat exchange fins 13, the spiral tube 11, the air suction tube 10 and other structures, and then the heat exchange and the recycling are carried out, so that the energy is saved, and the waste is avoided.

A steam compressor 8 is fixedly arranged on one side of the bottom in the unit box 1, a nitrogen oxide gas compressor 7 is fixedly arranged at one end of the steam compressor 8, an air compressor 6 is fixedly arranged at one end of the nitrogen oxide gas compressor 7, a tail gas expansion compressor 5 is fixedly arranged at one end of the air compressor 6, and the tail gas expansion compressor 5, the air compressor 6 and the nitrogen oxide gas compressor 7 are all fixedly arranged at the bottom in the unit case 1, the tail gas expansion compressor 5, the air compressor 6, the nitrogen oxide gas compressor 7 and the steam compressor 8 are combined together to form a unit, so that the mechanical efficiency can be improved, and the four-in-one power compressor unit is an energy self-sufficient unit, fully utilizes the heat released by the chemical reaction in the nitric acid production and the energy discharged by the recovered tail gas, and saves a large amount of energy.

The equal fixed mounting in 1 inner wall both sides of unit case has acoustic celotex board 15, and acoustic celotex board 15 specifically is foaming fiber aluminum plate, through acoustic celotex board 15, can reduce the produced noise of unit operation, can not cause noise pollution.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (5)

1. A four-in-one power compressor unit for nitric acid production comprises a unit box (1) and is characterized in that, four corners of the lower bottom surface of the unit box (1) are fixedly provided with damping mechanisms, the upper end of the unit box (1) is fixedly provided with a sealing cover (9), one side of the upper surface of the sealing cover (9) is fixedly provided with a heat exchange mechanism, a steam compressor (8) is fixedly installed on one side of the bottom in the unit box (1), a nitrogen oxide gas compressor (7) is fixedly installed at one end of the steam compressor (8), an air compressor (6) is fixedly installed at one end of the nitrogen oxide gas compressor (7), a tail gas expansion compressor (5) is fixedly installed at one end of the air compressor (6), and the tail gas expansion compressor (5), the air compressor (6) and the nitrogen oxide gas compressor (7) are fixedly arranged at the bottom in the unit case (1).

2. The four-in-one power compressor unit for nitric acid production according to claim 1, wherein the damping mechanism comprises a telescopic rod (3) fixedly mounted at one corner of the lower bottom surface of the unit case (1), an anti-skid plate (4) is fixedly mounted at the lower end of the telescopic rod (3), a first spring (2) is sleeved outside the telescopic rod (3), one end of the first spring (2) is fixedly connected to the unit case (1), and the other end of the first spring (2) is fixedly connected to the anti-skid plate (4).

3. The four-in-one power compressor unit for nitric acid production according to claim 2, characterized in that telescopic link (3) includes two sleeves (16) fixedly mounted on one corner of the bottom surface and antiskid plate (4) under unit box (1) respectively, two sleeve rod (17) are inserted between sleeve rods (16), and sleeve rod (17) upper end and lower end are equallyd divide and are extended to sleeve rod (16) respectively and fixedly mounted with limiting plate (19), sleeve rod (17) outside middle part cover is equipped with second spring (18), and second spring (18) upper end and lower end are equallyd divide and are respectively fixedly connected on sleeve rod (16).

4. The four-in-one power compressor unit for nitric acid production according to claim 1, wherein the heat exchange mechanism comprises two pipelines (12) fixedly installed on one side of the upper surface of the sealing cover (9), a plurality of heat exchange tubes (14) are communicated between the two pipelines (12), a heat exchange fin (13) is fixedly installed on one side of each heat exchange tube (14), a spiral tube (11) is communicated with the middle of one side of each pipeline (12) close to the middle of the upper surface of the sealing cover (9), one end of each spiral tube (11) extends to the position right above the middle of the upper surface of the sealing cover (9) and is communicated with a suction tube (10), and the lower end of each suction tube (10) penetrates through the sealing cover (9) and extends to the inner upper part of the unit box (1.

5. The four-in-one power compressor unit for nitric acid production according to claim 1, wherein sound insulation boards (15) are fixedly mounted on both sides of the inner wall of the unit box (1).