CN212832861U

CN212832861U - Ammonia water preparation device

Info

Publication number: CN212832861U
Application number: CN202020978571.3U
Authority: CN
Inventors: 石唯; 莫石华; 徐义雄; 林纯勤
Original assignee: Huizhou Huadatong Gas Manufacturing Co Ltd
Current assignee: Huizhou Huadatong Gas Manufacturing Co Ltd
Priority date: 2020-06-01
Filing date: 2020-06-01
Publication date: 2021-03-30
Anticipated expiration: 2030-06-01

Abstract

The application provides an ammonia water preparation device, which comprises an ammonia absorber, a liquid ammonia tank, an ammonia water finished product tank, an ice maker and a cold box; the output end of the cold box is respectively connected with the first input end of the ice maker and the first input end of the ammonia absorber, the first input end of the ammonia absorber is also connected with the output end of the liquid ammonia tank, and the first output end of the ammonia absorber is connected with the input end of the ammonia water finished product tank; wherein, a part of the gas ammonia generated by the cold box is input into the ice maker, and the other part of the gas ammonia is input into the ammonia absorber. The ammonia water preparation device is additionally provided with the ammonia absorber and other parts at the inlet of the ice machine, so that the technical purpose of reducing the load of the ice machine by reducing the total amount of the compressed gas of the ice machine is realized, and the yield of the ammonia water is increased.

Description

Ammonia water preparation device

Technical Field

The application belongs to the technical field of chemical equipment, and more specifically relates to an ammonia water preparation device.

Background

With the increasing strictness of national environmental protection requirements, environmental protection facilities such as boiler flue gas desulfurization and the like are increased continuously, thereby driving the gradual increase of the demand of ammonia water. The original ice machine system can not meet the production requirement, the high pressure of the ice machine system becomes a bottleneck problem restricting production, and the environmental protection pressure is not small. Specifically, for example, when the temperature is high in summer, although the ice machine system is provided with a plurality of large ice machines, the nominal refrigerating capacity of the cooling water in the summer circulating cooling water system sometimes cannot meet the requirement because the temperature of the cooling water reaches about 40 ℃, so that the yield of the liquid carbon dioxide product is influenced, and the quality of the liquid carbon dioxide is influenced. Particularly, in a high-temperature environment in summer, the temperature of liquid ammonia entering the liquid ammonia storage tank reaches about 35 ℃, on one hand, the frequent emptying of the liquid ammonia storage tank can be caused when the pressure of an ice maker system is at a high limit, and further discharged gas contains a large amount of gas ammonia, so that ammonia loss is caused, and the environment is polluted; on the other hand, the consumption of liquid ammonia is obviously increased, and the power consumption and the energy consumption are also obviously increased. Therefore, after the inlet pressure and the outlet pressure of the ice machine reach high limits, and the consequences are not obvious, a scheme capable of effectively reducing the system pressure of the ice machine needs to be provided urgently in the industry.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of this application is to provide an aqueous ammonia preparation facilities to solve the too high technical problem of ice maker pressure that exists among the prior art.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: providing an ammonia water preparation device, which comprises an ammonia absorber, a liquid ammonia tank, an ammonia water finished product tank, an ice maker and a cold box; the output end of the cold box is respectively connected with the first input end of the ice maker and the first input end of the ammonia absorber, the first input end of the ammonia absorber is also connected with the output end of the liquid ammonia tank, and the first output end of the ammonia absorber is connected with the input end of the ammonia water finished product tank;

wherein, a part of the gas ammonia generated by the cold box is input into the ice maker, and the other part of the gas ammonia is input into the ammonia absorber.

Optionally, the ammonia water preparation equipment further comprises a neutralization water tank and a water tank, wherein the neutralization water tank and the water tank are sequentially connected with the ammonia absorber through pipelines.

Optionally, the aqueous ammonia preparation equipment still includes ammonia absorber water-feeding pump, the one end of ammonia absorber water-feeding pump all with the neutralization water tank and the pond is connected, the other end of ammonia absorber water-feeding pump pass through the technology water inlet tube with the ammonia absorber is connected.

Optionally, a plurality of first control valves are arranged on the process water inlet pipe.

Optionally, an ammonia water outlet pipe is arranged between the ammonia absorber and the ammonia water finished product tank, and a plurality of second control valves are arranged on the ammonia water outlet pipe.

Optionally, the ammonia water preparation device further comprises a water cooling tower, and the ammonia absorber is connected with the water cooling tower through a circulating water return pipe;

the circulating water return pipe comprises a water return outlet pipe and a water return inlet pipe, water flows into the water cooling tower from the ammonia absorber through the water return outlet pipe, and flows back to the ammonia absorber through the water return inlet pipe after passing through the water cooling tower.

Optionally, the circulation wet return still includes first minute pipe and second minute pipe, first minute pipe with the one end of second minute pipe all with return water outlet pipe connects, the other end of first minute pipe and the other end of second minute pipe are equallyd divide respectively with the cooling tower is connected.

Optionally, an ammonia absorber cooling water pump is further arranged on the backwater inlet pipe.

Optionally, the ice maker is further connected with an external ammonia evaporative condenser through a first ammonia gas output pipe, and the ice maker is connected with an external tail gas treatment device through a second ammonia gas output pipe.

Optionally, the ice maker is further connected with an external liquid ammonia tank through a first liquid ammonia input pipe.

The application provides an aqueous ammonia preparation facilities's beneficial effect lies in: compared with the prior art, the ammonia water preparation device is additionally provided with the ammonia absorption tank and other parts at the inlet of the ice machine, so that part of the ammonia gas which originally needs to enter the ice machine can be shunted to the ammonia absorption tank to generate ammonia water, and the load of the ice machine is reduced by reducing the total amount of the compressed gas of the ice machine, thereby achieving the technical purpose of reducing the system pressure of the ice machine. In other words, the technical scheme of the application combines the ammonia water preparation process and the ice machine system optimization, not only solves the problems of high pressure of the ice machine system, increased operation faults of the ice machine and even decrement and fluctuation of the synthetic ammonia system, but also reduces the loss of gas ammonia, increases the yield of ammonia water, and has good economic benefit and environmental protection benefit.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a flow structure diagram of an ammonia water production apparatus provided in an embodiment of the present application.

The reference numbers illustrate:

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It should be noted that the terms of orientation such as left, right, up and down in the embodiments of the present application are only relative to each other or are referred to the normal use state of the product, and should not be considered as limiting.

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The embodiment of the application provides an aqueous ammonia preparation facilities.

Referring to fig. 1, in an embodiment, the ammonia water preparation apparatus includes an ammonia absorber 100, a liquid ammonia tank 910, an ammonia finished product tank 300, an ice maker 400, and a cold box 500; the output end of the cold box 500 is respectively connected with the first input end of the ice maker 400 and the first input end of the ammonia absorber 100, the first input end of the ammonia absorber 100 is also connected with the output end of the liquid ammonia tank 910, and the first output end of the ammonia absorber 100 is connected with the input end of the ammonia water finished product tank 300; wherein, a part of the gas ammonia generated by the cold box 500 is input into the ice maker 400 for compression, and the other part of the gas ammonia is input into the ammonia absorber 100.

Based on the design, the ammonia water preparation device is additionally provided with the ammonia absorption tank and other parts at the inlet of the ice machine 400, so that part of the ammonia gas which originally needs to enter the ice machine 400 can be shunted to the ammonia absorption tank to generate ammonia water, and the load of the ice machine 400 is reduced by reducing the total amount of the compressed gas of the ice machine 400, so that the technical purpose of reducing the system pressure of the ice machine 400 is achieved. In other words, the technical scheme of the application combines the ammonia water preparation process and the optimization of the ice machine 400 system, so that the problems of high pressure of the ice machine 400 system, increased operation faults of the ice machine 400 and reduction and fluctuation of a synthetic ammonia system are solved, the loss of gas ammonia is reduced, the yield of ammonia water is increased, and the method has good economic benefit and environmental protection benefit.

Further, as shown in fig. 1, the ammonia water preparation apparatus further includes a neutralization water tank 610 and a water tank 620, and the neutralization water tank 610 and the water tank 620 are connected to the ammonia absorber 100 in sequence through pipes. Here, the neutralization water tank 610 is used to supply water meeting the process quality requirements to the ammonia absorber 100, and the water tank 620 mainly serves as a water storage and output water. After the ammonia absorber 100 absorbs ammonia from the liquid ammonia tank 910 and the cold box 500, the absorbed ammonia can be mixed with water entering the ammonia absorber 100 to be made into ammonia water with a preset concentration, and then the ammonia water is output to the ammonia water finished product tank 300 to be stored. Generally, the ammonia absorber 100 is kept normally open after being put into operation, so that the production of a large amount of finished ammonia water can be increased, and the concentration of the ammonia water is generally 20% and 25%. It should be noted that the medium of the ammonia absorber 100 is liquid ammonia, gaseous ammonia, process water, circulating water, etc., and is an integral skid-mounted device.

Further, the ammonia water preparation equipment further comprises an ammonia sucker water feeding pump 630, one end of the ammonia sucker water feeding pump 630 is connected with the neutralization water tank 610 and the water tank 620, and the other end of the ammonia sucker water feeding pump 630 is connected with the ammonia sucker 100 through the process water inlet pipe 650. It can be understood that the water in the neutralization water tank 610 and the water tank 620 can be pressurized and conveyed to the ammonia absorber 100 by adding the ammonia absorber feed pump 630, so as to ensure normal ammonia water preparation production.

Further, a plurality of first control valves 640 are disposed on the process water inlet pipe 650. The main function of the first control valve 640 is to open or close the passage on the pipe, and the provision of a plurality of control valves facilitates the repair and replacement of the individual pipe sections and the connected components on the respective pipes.

Further, an ammonia water outlet pipe 310 is arranged between the ammonia absorber 100 and the ammonia water finished product tank 300, and a plurality of second control valves 320 are arranged on the ammonia water outlet pipe 310. Here, the ammonia water outlet pipe 310 has two control valves provided adjacent to the ammonia absorber 100 and the ammonia water product tank 300, respectively, to open and close the pipes at the two locations, respectively, and further facilitate the convenience of subsequent repair and replacement.

Further, as shown in fig. 1, the ammonia water preparation apparatus further includes a water cooling tower 710, and the ammonia absorber 100 is connected to the water cooling tower 710 through a circulating water return pipe 720. Specifically, the circulating water return pipe 720 includes a water return outlet pipe 721 and a water return inlet pipe 722, and the water flows from the ammonia absorber 100 into the water cooling tower 710 through the water return outlet pipe 721, then flows through the water cooling tower 710, and then flows back to the ammonia absorber 100 through the water return inlet pipe 722. It can be understood that the cooling water is continuously circulated, so that the ammonia gas in the ammonia absorber 100 can be continuously cooled and liquefied, and the normal production of ammonia water is ensured.

Further, the circulating water return pipe 720 further comprises a first branch pipe 723 and a second branch pipe 724, one end of each of the first branch pipe 723 and the second branch pipe 724 is connected with the water return water outlet pipe 721, and the other end of each of the first branch pipe 723 and the other end of each of the second branch pipes 724 are respectively connected with the water cooling tower 710. Here, through the design of two spinal branch pipes with water injection cooling tower 710, can increase the water injection point in cooling tower 710 to make the hydroenergy of injection cooling tower 710 better more even mix with the lower storage water of temperature in cooling tower 710, simultaneously can also reinject the in-process and accelerate the heat of water and give off, so that the cooling more fast.

Meanwhile, the backwater inlet pipe 722 is provided with an ammonia absorber cooling water pump 730, and the ammonia absorber cooling water pump 730 can ensure that the cooling water has enough water pressure to enter the ammonia absorber 100, can also accelerate the extraction of the cooling water to continuously perform heat exchange circulation, and further can effectively improve the production efficiency of ammonia water.

Further, the ice maker 400 is connected with an external ammonia evaporation condenser 820 through a first gas ammonia output pipe 810, and the ice maker 400 is connected with an external tail gas treatment device 840 through a second gas ammonia output pipe 830, so that the ammonia tail gas in the ice maker 400 can be reused or treated, and the environmental protection and energy saving performance of the device is further effectively improved. In addition, the ice maker 400 is further connected to an external liquid ammonia tank 910 through a first liquid ammonia input pipe, so as to smoothly deliver low-temperature liquid ammonia to the oil cooler of the ice maker 400, and reduce the oil temperature in the oil cooler. Certainly, in other embodiments, in actual production, the gas ammonia carried in the ammonia water at the outlet of the ammonia absorber 100 can be absorbed by the tail gas absorption tank in the device, so that zero emission of the gas ammonia tail gas is realized, no peculiar smell is generated in a production site, the problem that the peculiar smell is difficult to control in the ammonia water preparation process in the traditional process is effectively solved, and obvious environmental protection benefits are achieved.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An ammonia water preparation device is characterized by comprising an ammonia absorber, a liquid ammonia tank, an ammonia water finished product tank, an ice maker and a cold box; the output end of the cold box is respectively connected with the first input end of the ice maker and the first input end of the ammonia absorber, the first input end of the ammonia absorber is also connected with the output end of the liquid ammonia tank, and the first output end of the ammonia absorber is connected with the input end of the ammonia water finished product tank;

2. The apparatus of claim 1, further comprising a neutralization water tank and a water tank, wherein the neutralization water tank and the water tank are connected to the ammonia absorber sequentially through a pipe.

3. The apparatus of claim 2, further comprising an ammonia sucker feed pump, wherein one end of the ammonia sucker feed pump is connected to the neutralization water tank and the water tank, and the other end of the ammonia sucker feed pump is connected to the ammonia sucker through a process water inlet pipe.

4. The apparatus of claim 3, wherein the process water inlet pipe is provided with a plurality of first control valves.

5. The apparatus of claim 1, wherein an ammonia outlet pipe is disposed between the ammonia absorber and the ammonia tank, and a plurality of second control valves are disposed on the ammonia outlet pipe.

6. The apparatus for preparing ammonia water according to claim 1, further comprising a water cooling tower, wherein the ammonia absorber is connected to the water cooling tower through a circulating return pipe;

7. The ammonia water preparation apparatus of claim 6, wherein the circulating water return pipe further comprises a first branch pipe and a second branch pipe, one end of each of the first branch pipe and the second branch pipe is connected to the return water outlet pipe, and the other end of each of the first branch pipe and the second branch pipe is connected to the water cooling tower.

8. The apparatus for preparing ammonia water of claim 6, wherein the backwater inlet pipe is further provided with an ammonia absorber cooling water pump.

9. The apparatus for preparing ammonia water according to any one of claims 1 to 8, wherein the ice maker is further connected to an external ammonia evaporative condenser through a first gaseous ammonia outlet pipe, and the ice maker is connected to an external tail gas treatment apparatus through a second gaseous ammonia outlet pipe.

10. The ammonia water production apparatus of claim 9, wherein the ice maker is further connected to an external liquid ammonia tank through a first liquid ammonia input pipe.