KR101703959B1 - An apparatus for manufacturing urea solution and a method for manufacturing urea solution using the same - Google Patents

Abstract

The present invention relates to an apparatus for preparing a urea solution and a method for preparing a urea solution using the same. The apparatus for preparing a urea solution according to the present invention comprises: a dissolution reactor (100) for dissolving urea in water to form a first urea solution; a cyclone separator (200) for separating impurities from the first urea solution to form a second urea solution; a filtering device (300) for filtering impurities through the second urea solution passed through the cyclone separator (200) to form a third urea solution; a urea solution storage tank (400) for storing the third urea solution passed through the filtering device (300); and a UV-lamp (500) mounted to the rear end of the filtering device (300) for emitting UV rays so that the third urea solution may be sterilized. According to the present invention, impurities contained in a urea solution are removed to the highest degree during the preparation of the urea solution, thereby providing a high-purity urea solution. In addition, it is possible to heat a urea solution only at a portion requiring warming by moving the position of a heating coil inside of the dissolution tank housing, thereby minimizing energy consumption.

Description

TECHNICAL FIELD [0001] The present invention relates to a urea water producing apparatus and a urea water producing method using the urea water producing apparatus,

The present invention relates to a urea water producing apparatus and a urea water producing method using the same, and more particularly, to an apparatus for producing urea water having a high purity by removing impurities contained in urea water as much as possible during a urea water producing process, And a method for producing water.

Nitrogen oxides are mainly found in power plants, internal combustion engines, and nitric acid plants. It is known that there are seven kinds of nitrogen oxides such as nitrogen monoxide, nitrogen dioxide, nitrogen trioxide, dinitrogen monoxide, dinitrogen monoxide, dinitrogen tetroxide and dinitrogen oxide. Most of these are dinitrogen monoxide, nitrogen monoxide and nitrogen dioxide. Generally, nitrogen oxides (NOx) refer to nitrogen monoxide and nitrogen dioxide, and the nitrogen oxides generated in most power plants and automobiles are in the form of nitrogen monoxide. These nitrogen oxides cause various respiratory diseases such as bronchitis pneumonia and are the main cause of optical smog and acid rain.

So far, various technologies for removing nitrogen oxides from fossil fuels have been studied in power plants, and the selective catalytic reduction (SCR) technology has been used to remove nitrogen oxides from stationary sources It is a technology that meets all the economic, legal and technical aspects of the various technologies presented. Since this technology uses catalysts, the proportion of NOx removal catalysts contained in the exhaust gas accounts for a large portion of the total investment and operating costs of the SCR process.

In Korea, the Ministry of Environment announced in February 2014 that the use of the selective catalytic reduction device applied to reduce nitrogen oxides in large-sized light vehicles was confirmed by the Ministry of Environment in order to check whether the exhaust gas self- "The official said.

In order to effectively manage large-scale light vehicles with a large contribution to the generation of pollutants such as nitrogen oxides in recent years, the nitrogen oxide standards have been strengthened five times from 2015, and for the granular materials with potential for carcinogenicity, 6 standards will be applied and implemented.

Described in more detail with reference to Table 1 below, the current flow-5 standard on the basis of the conventional exhaust gas was allowed to be 2.0 g / kWH of NOx. However, the current Euro-6 standard (2015) has been significantly strengthened to 20%, allowing only 0.4g / kWH. Therefore, the Ministry of Environment of Korea has stated that it will prevent the problem of nitrogen oxides being discharged up to 10 times when the SCR system does not operate normally, and conduct the occasional inspection to ensure the effectiveness of the Euro-6 standard.

[Table 1]

Occasional inspections are regularly conducted by the National Institute of Environmental Science and are conducted by the National Institute of Environmental Science and Technology. They include checking the performance of the SCR system, detecting the operation of the sensor used to control the SCR operation timing, diluting the catalyst, . In addition, it is said that the vehicle will be recalled immediately for those vehicles that are determined not to meet the criteria, and that it will suspend sales and stop the production of vehicles under production.

In addition, the Ministry of Environment has notified the committee that it will not be able to confirm the consumption amount of the catalyst required for the normal operation of SCR in parallel with these occasional inspections.

With increasing emissions regulations, interest in the urea market for selective catalytic reduction (SCR) systems in automobiles is increasing. The urea number is a liquid material that reduces NOx by neutralizing the exhaust gas from the engine and is an important material in vehicles equipped with an SCR system.

Research has shown that more than twice the deaths of traffic accidents are caused by soot containing automotive nitrogen oxides, which has a large impact on our daily lives. Therefore, as a part of the GHG reduction policy that has been steadily been raised in the developed countries for a long time, the regulation of vehicle exhaust gas is becoming more and more strict, and Korea is following the European standards for diesel emission regulation.

Urea-SCR (Urea-SCR) is a technology that uses urea water in selective catalytic reduction, and is mainly used to reduce nitrogen oxides emitted from automobiles. This Urea-SCR technology is called DEF (Diesel Exhaust Fluid) in the United States and AdBlue in Europe. The principle of urea number used in each automobile maker has its own name, and it is named as Mercedes Benz Bluetec, BlueMotion, BMW and Honda's clean diesel.

The Urea-SCR system is used continuously when the engine is running, and the urea consumption is about 4 to 6% of the fuel consumption.

In this way, the number of elements used for Urea-SCR is the quality evaluation standard such as KD R 22241, which is the criterion of automobile catalyst suitability evaluation by Korea Petroleum Management Authority in Korea. It is demanded that the quality of the product and the quality of the product whose properties do not change are satisfied.

In this situation, although the demand and interest of the number of urea used in the SCR device of an automobile is increasing, there is a problem that the products of the companies that produce the urea presently do not match the purity of the products requiring precision. That is, in the manufacturing process of the urea water, many impurities are contained in the urea water, so that there is a problem in that a high purity urea water can not be produced.

Further, in order to dissolve the urea in water (pure water, distilled water) in the manufacturing process of the urea water, a condition of a certain temperature or more is required and conventionally, the heating coil is entirely embedded in the side wall of the melting vessel housing. Accordingly, even when a small number of urea water is produced, the entire heating coil has to be operated, and accordingly, a large amount of energy is consumed.

Patent Registration No. 10-1146708 (2012.05.09)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to provide an impact absorber, a cyclone separator, a filtering device, and a UV lamp, And a method for manufacturing urea water using the same.

The urea water producing apparatus according to the present invention comprises: a dissolution reactor (100) for dissolving urea in water to produce a first urea water; A cyclone separator (200) for separating impurities from the first urea water by centrifugal force to form a second urea water; A filtering device 300 for filtering impurities from the second urea water that has passed through the cyclone separator 200 to form a third urea water; A urea water storage tank 400 for storing the third number of urea water that has passed through the filtering device 300; And a UV lamp (500) mounted at the rear end of the filtering device (300) to emit ultraviolet rays to sterilize the third urea water.

The dissolution reactor 100 includes a dissolution tank housing 110; A water injection unit 120 for injecting water into the melting vessel housing 110; An element charging unit 130 for charging an element into the melting vessel housing 110; An agitator 140 for mixing the water injected into the melting vessel housing 110 with the element; A heating device (150) for heating the mixture of water and the element to dissolve the element in the water; A connection pipe 160 for injecting the first urea water in the melting vessel housing 110 into the cyclone separating apparatus 200; And a cleaning part 170 for spraying the cleaning liquid to decompose the impurities in the interior of the melting vessel housing 110.

The melting vessel housing 110 includes an entrance 111 formed at one side of the melting vessel housing 110 so that an operator can enter and exit the inside of the melting vessel housing 110; And a shock absorbing part 112 formed on the lower surface of the melting vessel housing 110 to prevent the water and the elements injected into the melting vessel housing 110 from colliding with the lower surface of the melting vessel housing 110 .

The shock absorbing part 112 includes an elastic shock absorbing member 112-1 disposed under the lower surface of the melting vessel housing 110; And a housing 112-2 surrounding the lower side of the impact absorption member 112-1 and the melting vessel housing 110 such that the shock absorption member 112-1 is seated inside .

The heating device 150 includes: a heating coil 151 for generating heat to heat the mixture of the water and the element; And a cradle 152 mounted on the lower surface of the melting vessel housing 110 and positioned below the heating coil 151 to move the heating coil 151 up and down. .

The cyclone separator 200 includes a cylindrical cyclone body 210 through which the first urea water flows from the dissolution reactor 100 and the first urea water descends while rotating along the inner wall. The cone body 210 is formed with a cone protruding downward from the lower end of the cyclone body 210 so that the impurity is separated from the first element water by the centrifugal force generated by the rotation of the first element number, CONE) type elliptical separator 220; One end of which is vertically protruded from the lower center of the ellipsoidal water separator 220 to the inside of the urea water separator 220 and the other end is communicated with the filtering device 300, A water discharge pipe 230; A plurality of impurities separated from the first urea water are formed at a lower portion of the urea water separating unit 220 so as to surround the urea water discharge pipe 230 to be discharged to the outside of the cyclone separating apparatus 200, An impurity discharging portion 240 for recovering impurities into the melting vessel housing 110; And an impurity removing unit 250 for removing impurities adhering to the surface of the urea water discharge pipe 230.

One end of the urea water discharge pipe 230 is located inside the urea water separator 220 and a plurality of auxiliary filters 231-1 are vertically mounted inside the auxiliary water filter 230. The auxiliary filter 231-1, A discharge pipe 231 having a sensor part 231-2 installed therein for detecting whether or not the impurities are accumulated; And a filter pipe 232 provided at an upper portion of the discharge pipe 231 and formed in a MESH fashion to allow the second urea water to flow therein.

The impurity removing unit 250 includes a cylinder part 251 mounted on the upper portion of the cyclone body part 210; A piston portion 252 having one end inserted into the cylinder portion 251 and vertically movable; A ring-shaped contact portion (not shown) mounted on the other end of the piston portion 252 so as to be in close contact with the outer surface of the filter pipe 232 and removing impurities on the outer surface of the filter pipe 232 while sliding in the vertical direction 253); And a vibrating part 254 attached to the outside of the cylinder part 251 and generating vibration when the contact part 253 is moved.

The filtering device 300 includes an activated carbon filter 310, a bag filter 320 and a micro filter 330. The activated carbon filter 310, the bag filter 320, And a micro filter (330) are sequentially arranged.

And the ratio of the element to the third number of elements is 31 wt% to 33 wt%.

The method of manufacturing a urea water according to the present invention includes the steps of (S100) preparing a first urea water by dissolving urea in water in a dissolution reactor 100; Separating impurities from the first urea water by centrifugal force in the cyclone separator 200 to form a second urea water (S200); Filtering the impurities from the second urea water to form a third urea water at the filtering device 300 (S300); Sterilizing the third urea water using ultraviolet rays in the UV lamp 500 (S400); And storing the sterilized third urea water in the urea water storage tank 400 (S500).

The step of forming the urea water further includes the step (S600) of forming an impurity layer by collecting and depositing the impurities separated in the step (S200) of forming the second urea water by the dissolution reactor (100) .

The method for manufacturing urea water may further include a step (S700) of spraying a cleaning liquid onto the impurity layer in the cleaning section 170 to decompose the impurity layer.

As described above, according to the present invention, impurities contained in urea water can be removed as much as possible during the manufacturing process of urea water, so that high purity urea water can be produced.

In addition, energy consumption can be minimized by moving the position of the heating coil in the melting vessel housing up and down, and heating only the number of elements at the position where the heating is required.

1 is a schematic view of a urea water producing apparatus according to the present invention.
Fig. 2 and Fig. 3 are diagrams illustrating the characteristics of the lysis reactor in the present invention. Fig.
4 and 5 are views for explaining the features of the cyclone separating apparatus in the present invention.
6 is a flow chart of a method of manufacturing urea water according to the present invention.

It is to be understood that the words or words used in the present specification and claims are not to be construed in a conventional or dictionary sense and that the inventor can properly define the concept of a term to describe its invention in the best way And should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic view of a urea water producing apparatus according to the present invention, FIGS. 2 and 3 are views for explaining the characteristics of a dissolving reactor in the present invention, and FIGS. 4 and 5 illustrate a feature of a cyclone separating apparatus according to the present invention Fig.

1 to 5, a urea water producing apparatus according to the present invention includes a melting reactor 100, a cyclone separating apparatus 200, a filtering apparatus 300, a urea water storage tank 400, a UV- (500).

The dissolving reactor 100 serves to dissolve the urea in water to produce the first urea water. The dissolution reactor 100 includes a melting vessel housing 110, a water injecting unit 120, an injecting unit 130, a stirring unit 140, a heating unit 150, a connecting pipe 160, a cleaning unit 170, . The melting vessel housing 110 will be described in detail later.

The water injection unit 120 functions to inject water (pure water or distilled water) into the melting vessel housing 110 and the element injection unit 130 functions to inject an element into the melting vessel housing 110 . The stirring unit 140 serves to mix the water and the element introduced into the melting vessel housing 110 and the stirring unit 140 may include a plurality of rotating blades and a driving unit for rotating the rotating blades However, it is not necessarily limited to this, but it is sufficient that the water and the element can be mixed with each other.

The heating device 150 is a device for heating a mixture of the water and the element to dissolve the element in the water, and a detailed description of the heating device will also be provided later.

The connection pipe 160 serves to inject the first urea water inside the melting vessel housing 110 into the cyclone separating apparatus 200 and a pump (not shown) is attached to the connection pipe 160 So that the pressure of the first urea water injected into the cyclone separator 200 can be increased. Accordingly, the flow velocity and the centrifugal force of the first urea water are increased, and the impurities can be easily separated from the inside of the cyclone separator 200.

The cleaning part 170 serves to spray the cleaning liquid to decompose the impurities in the melting vessel housing 110. Accordingly, when the operator cleans the inside of the melting vessel housing 110, the impurities can be easily removed.

Hereinafter, with reference to FIGS. 2 and 3, the melting vessel housing 110 will be described in more detail.

The melting vessel housing 110 is formed with an entrance 111 at one side thereof so that an operator can enter and exit the inside of the melting vessel housing 110. A conventional melting vessel housing was made of stainless steel. As a result, the cost is high and the facility safety problem is caused by the load, so that it has been difficult to enlarge the conventional melting vessel housing. Therefore, the conventional melting vessel housing has a narrow internal space, and it is very difficult to clean the remaining impurities after manufacturing the urea water, which may contain impurities in the production of additional urea water. (See Table 2 below)

[Table 2]

In contrast, in the present invention, the size of the melting vessel housing 110 is increased by applying a polymeric resin material (particularly, polyethylene). An entrance 111 is formed at one side of the melting vessel housing 110 so that the operator can easily clean the inside of the melting vessel housing 110. Therefore, the present invention minimizes the possibility that impurities are contained in urea water, and can produce urea water having high purity.

In the present invention, the shock absorbing part 112 is provided on the lower surface of the melting vessel housing 110 to prevent the water and the elements introduced into the melting vessel housing 110 from colliding with the lower surface of the melting vessel housing 110, . (See Fig. 3)

The shock absorbing portion 112 includes a shock absorbing member 112-1 and a housing 112-2. The shock absorbing member 112-1 is formed of an elastic material and disposed below the lower surface of the melting vessel housing 110. [ The shock absorbing member 112-1 may be a mixture of sand, earth, additives, and the like, but is not necessarily limited thereto, and may be a material capable of absorbing impact by a buffering action.

The housing 112-2 is formed to surround the lower side of the shock absorbing member 112-1 and the melting vessel housing 110 so that the shock absorbing member 112-1 is seated inside.

Conventionally, when the urea and water (pure water, distilled water) are introduced during the urea water production process, the element and water strongly collide with the lower surface of the melting vessel housing due to gravity. As a result, the bottom surface of the melting vessel housing may be scraped off. As a result, heavy metals such as Cr (Cr) and Ni (Ni), which are materials of the bottom surface of the melting vessel housing, are contained in the urea water, .

The present invention has a shock absorbing part 112 for solving the above problems. More specifically, after the element and water are injected into the melting vessel housing 110, even when the element and the water fall due to gravity, the collision impact on the lower surface of the melting vessel housing 110 is absorbed. That is, when the element and the water collide with the melting vessel housing 110, the impact absorption member 112-1 disposed inside the housing 112-2 is compressed while the element and water fall, ) Of the shock absorber. Therefore, it is possible to prevent the bottom surface of the melting vessel housing 110 from being shaved off. In other words, the present invention can improve the purity of the urea water finally by providing the steric absorbent portion 112.

Hereinafter, the heating device 150 will be described in more detail. (See Fig. 2)

The heating device 150 includes a heating coil 151 and a holder 152. The heating coil 151 generates heat to heat the mixture of the water and the element. That is, a first urea water is produced by heating a mixture of water and urea and dissolving the urea in water.

The holder 152 is mounted on the lower surface of the melting vessel housing 110 and is positioned below the heating coil 151. The cradle 152 is extended or compressed in the vertical direction to move the heating coil 151 up and down. The cradle 152 may be a cylinder and a piston structure, but it is not limited thereto, and a means that can be extended or compressed in the vertical direction is sufficient.

In order to dissolve the urea in water (pure water, distilled water) in the manufacturing process of the urea water, a condition of a certain temperature or higher is required. In the related art, the heating coil is entirely embedded in the side wall of the melting vessel housing. Accordingly, even when a small number of urea water is produced, the entire heating coil has to be operated, and accordingly, a large amount of energy is consumed.

In order to solve the above problems, the present invention is characterized in that a heating coil 151 is disposed inside a melting vessel housing 110, a position of a heating coil 151 is moved by a cradle 152, The heating coil 151 is positioned at a point where a temperature increase is required. As a result, it consumes less energy and can sufficiently dissolve the urea in water. At this time, a plurality of temperature sensors may be mounted in the melting vessel housing 110 to detect a point where a temperature increase is required.

4 and 5 are views for explaining the characteristics of a cyclone separator in the present invention. 4 and 5, the cyclone separator 200 separates impurities from the first urea water by centrifugal force to form a second urea water. The first number of urea may include a large number of impurities by simply dissolving urea in water (pure water, distilled water). Therefore, in order to increase the purity of the number of urea to be produced, it is necessary to separate / remove impurities. To this end, the present invention includes a cyclone separator 200 for physically separating impurities using centrifugal force.

The cyclone separating apparatus 200 includes a cyclone body 210, a urea water separating unit 220, a urea water discharge pipe 230, an impurity discharging unit 240 and an impurity removing unit 250. The cyclone body 210 has a cylindrical shape and the first urea water flowing in from the dissolution reactor 100 moves downward along the inner wall of the cyclone body 210. That is, the first urea water is pressurized by the pump (not shown) and flows into one side of the inner wall of the cyclone body part 210 communicating with the connection pipe 160, The centrifugal force is generated while rotating along the inner wall, and is lowered by gravity.

A rotating wing (not shown) and a motor unit (not shown) are separately applied to the inside of the cyclone body 210 to replace the pump (not shown) The number of elements can be rotated quickly.

The urea water separating unit 220 has a CON-shaped configuration protruding downward from the lower end of the cyclone body 210. The urea water separating unit 220 separates the impurities from the first urea water by centrifugal force generated by the rotation of the first urea water to form the second urea water. That is, the first number of ellipses is lowered while rotating along the inner wall of the cyclone body 210, and is then lowered along the inner wall of the cone shape of the urea water separator 220. Thereby separating the impurities from the first urea water by centrifugal force to form the second urea water.

One end of the urea water discharge pipe 230 is vertically protruded from the lower center of the urea water separator 220 to the inside of the urea water separator 220. The other end of the urea water discharge pipe 230 communicates with the filtering device 300. Therefore, the number of the second elements separated from the urea water separating unit 220 is discharged through the urea water discharge pipe 230, and then, is transmitted to the filtering device 300. A valve is mounted on the urea water discharge pipe 230 to open and close the urea water discharge pipe 230. Accordingly, the amount of the second urea water supplied to the filtering device 300 can be controlled to achieve the optimum filtering efficiency.

The urea water discharge pipe 230 includes a discharge pipe 231 and a filter pipe 232.

One end of the discharge pipe 231 is located inside the urea water separating unit 220 and a plurality of auxiliary filters 231-1 are vertically installed in the discharge pipe 231. [ The exhaust pipe 231 is provided with a sensor unit 231-2 for detecting whether or not the impurities are accumulated in the auxiliary filter 231-1. If it is detected that impurities are accumulated in the sensor unit 231-2, the operator can recognize the accumulation of the impurities through a separate warning device (not shown) to clean or replace the auxiliary filter 231-1.

The filter pipe 232 is provided at an upper portion of the discharge pipe 231 and is formed in a MESH shape so that the second urea water flows into the interior.

That is, the filter pipe 232 and the auxiliary filter 231-1 of the discharge pipe 231 prevent impurities from being contained in the second urea water, and only the second element water is supplied to the urea water discharge pipe 230 .

A plurality of impurity discharging units 240 are formed below the urea water separating unit 220 so as to surround the urea water discharging pipe 230. The impurity outlet 240 discharges the impurities separated from the first urea water to the outside of the cyclone separator 200 and recovers the impurities back into the interior of the melting vessel housing 110.

Accordingly, since the impurities are mixed with the first urea water in the melting vessel housing 110, elements contained in the impurities can be dissolved to the utmost and the urea water production efficiency can be maximized.

In addition, as described above, since the melting vessel housing 110 is a large structure enough for an operator to enter and leave, and a door 111 is formed on one side, the operator can easily clean the inside of the melting vessel housing 110 have. Accordingly, the impurities can be recovered from the cyclone separator 200 to the dissolving tank housing 110, so that the inside of the cyclone separator 200 can be kept clean.

The impurity removing unit 250 serves to remove impurities adhering to the surface of the urea water discharge pipe 230. The impurity removing unit 250 includes a cylinder unit 251, a piston unit 252, a contact unit 253, and a vibrating unit 254.

The cylinder 251 is mounted on the upper portion of the cyclone body 210 and one end of the piston 252 is inserted into the cylinder 251 and is vertically movable.

The contact portion 253 is ring-shaped and mounted on the other end of the piston portion 252 so as to be in close contact with the outer surface of the filter pipe 232. The contact portion 253 slides in the vertical direction to remove impurities on the outer surface of the filter pipe 232.

The vibrating portion 254 is attached to the outside of the cylinder portion 251 and serves to generate vibration when the contact portion 253 is moved. Accordingly, vibration can be generated when the contact portion 253 is moved, and impurities adhering to the surface of the urea water discharge pipe 230 can be easily removed.

The filtering device 300 functions to filter the impurities from the second urea water that has passed through the cyclone separator 200 to form the third urea water. The filtering device 300 may include an activated carbon filter 310, a bag filter 320 and a micro filter 330. The activated carbon filter 310, the bag filter 320, And a micro filter 330 may be sequentially arranged. However, the present invention is not limited thereto, and may be a filter of any one or more of activated carbon filter 310, bag filter 320, and micro filter 330.

The urea water storage tank 400 serves to store the third urea water that has passed through the filtering device 300. The UV lamp 500 is mounted on the rear end of the filtering device 300, It acts to emit ultraviolet rays to sterilize three-element water. That is, microorganisms or the like introduced during the urea water production process are removed to finally produce a high purity urea water (i.e., a third number of urea water), and store and commercialize the same.

In this case, the ratio of the element to the number of the third elements is 31 wt% to 33 wt%, and the ratio of the element to the third number of elements is preferably 32.5 wt%. The number of ellipses has a very large change in freezing point depending on the concentration of the element. In addition, the number of commercialized elements (i.e., the number of third elements) is mainly used in an SCR system (Selective Catalytic Solution System) of a vehicle or the like, and when the winter vehicle is parked outside, the urea number may be frozen. Therefore, the lower the freezing point of the urea water is, the more advantageous it is to produce the urea water at a ratio (32.5% by weight) of the freezing point of the urea water at the lowest temperature (minus 11 캜).

6 is a flow chart of a method of manufacturing urea water according to the present invention. Referring to FIG. 6, the urea water producing method according to the present invention comprises the steps of (S100) producing a first urea water by dissolving urea in water in a dissolution reactor 100, Separating impurities from the first urea water to form a second urea water (S200), filtering the impurities in the second urea water to form a third urea water (Step S200) (S400) of sterilizing the third urea water using ultraviolet rays in the UV lamp (500) and storing the sterilized third urea water in the urea water storage tank (400) .

The step (S600) of forming the impurity layer by collecting and precipitating the impurities separated in the step (S200) of forming the second ellipses in the dissolution reactor (100) and the step (S600) (S700) of spraying a cleaning liquid onto the layer and decomposing the impurity layer.

Accordingly, the third element number is manufactured and stored (S100 to S500), and the impurities precipitated in the dissolution reactor 100 can be removed during the process (S600 and S700). Accordingly, it is possible to produce and sell urea water in conformity with the EURO-6 standard by continuously producing urea water having a low content of impurities.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory only and are not restrictive of the invention, as claimed, and will be fully understood by those of ordinary skill in the art. The present invention is not limited thereto. It will be apparent to those skilled in the art that various substitutions, modifications and variations are possible within the scope of the present invention, and it is obvious that those parts easily changeable by those skilled in the art are included in the scope of the present invention .

100 dissolution reactor
110 Melting tank housing
111 Entrance
112 shock absorber
112-1 shock absorbing member
112-2 Housing
120 Water inlet part
130 element input portion
140 stirring part
150 heating device
151 Heating coil
152 Cradle
160 connector
170 years old government
200 cyclone separator
210 cyclone body portion
220 element number separator
230 element water discharge pipe
231 Exhaust pipe
231-1 secondary filter
231-2 Sensor section
232 filter pipe
240 impurity discharge portion
250 impurity removal
251 Cylinder section
252 Piston portion
253 Contact
254 Vibration unit
300 Filtering device
310 activated carbon filter
320 bag filter
330 Micro filter
400 urea water storage tank
500 UV lamp

Claims (13)

A dissolution reactor (100) for dissolving elements in water to produce a first urea water;
A cyclone separator (200) for separating impurities from the first urea water by centrifugal force to form a second urea water;
A filtering device 300 for filtering impurities from the second urea water that has passed through the cyclone separator 200 to form a third urea water;
A urea water storage tank 400 for storing the third number of urea water that has passed through the filtering device 300; And
A UV lamp 500 mounted at a rear end of the filtering device 300 to emit ultraviolet rays to sterilize the third urea water;
Wherein the urea water producing apparatus comprises:
The dissolution reactor (100)
A melting vessel housing 110;
A water injection unit 120 for injecting water into the melting vessel housing 110;
An element charging unit 130 for charging an element into the melting vessel housing 110;
An agitator 140 for mixing the water injected into the melting vessel housing 110 with the element;
A heating device (150) for heating the mixture of water and the element to dissolve the element in the water;
A connection pipe 160 for injecting the first urea water in the melting vessel housing 110 into the cyclone separating apparatus 200; And
A cleaning part 170 for spraying a cleaning liquid to decompose impurities inside the melting vessel housing 110;
Lt; / RTI >
The melting vessel housing (110)
An entrance (111) formed on one side of the melting vessel housing (110) so that an operator can enter and exit the inside of the melting vessel housing (110); And
So as to absorb impact applied to the melting vessel housing 110 upon collision with the lower surface of the melting vessel housing 110 when the water and the elements injected into the melting vessel housing 110 drop due to gravity, A shock absorbing portion 112 formed at a lower portion of the housing 110;
Wherein the elliptical shape of the ellipsoidal element is formed in the elliptical shape. delete delete The method according to claim 1,
The shock absorbing portion 112 is formed of,
An impact absorbing member 112-1 of elastic material disposed at a lower portion of the lower surface of the melting vessel housing 110; And
A housing 112-2 surrounding the side walls of the shock absorbing member 112-1 and the side of the melting vessel housing 110 so that the shock absorbing member 112-1 is seated inside;
Wherein the elliptical shape of the ellipsoidal element is formed in the elliptical shape. 5. The method of claim 4,
The heating device (150)
A heating coil 151 for generating heat to heat the mixture of the water and the element; And
A holder 152 mounted on the lower surface of the melting vessel housing 110 and positioned below the heating coil 151 to move the heating coil 151 up and down;
Wherein the elliptical shape of the ellipsoidal element is formed in the elliptical shape. The method according to claim 1,
The cyclone separating apparatus (200)
A cylindrical cyclone body portion 210 into which the first urea water flows from the dissolution reactor 100 and the first urea water descends while rotating along the inner wall;
The cone body 210 is formed with a cone protruding downward from the lower end of the cyclone body 210 so that the impurity is separated from the first element water by the centrifugal force generated by the rotation of the first element number, CONE) type elliptical separator 220;
One end of which is vertically protruded from the lower center of the ellipsoidal water separator 220 to the inside of the urea water separator 220 and the other end is communicated with the filtering device 300, A water discharge pipe 230;
A plurality of impurities separated from the first urea water are formed at a lower portion of the urea water separating unit 220 so as to surround the urea water discharge pipe 230 to be discharged to the outside of the cyclone separating apparatus 200, An impurity discharging portion 240 for recovering impurities into the melting vessel housing 110; And
An impurity removing unit 250 for removing impurities adhering to the surface of the urea water discharge pipe 230;
Wherein the elliptical shape of the ellipsoidal element is formed in the elliptical shape. The method according to claim 6,
The urea water discharge pipe (230)
A plurality of auxiliary filters 231-1 are vertically installed inside the urea water separator 220 to detect whether or not the impurities are accumulated in the auxiliary filter 231-1 A discharge pipe 231 in which a sensor portion 231-2 is mounted; And
A filter pipe 232 provided at an upper portion of the discharge pipe 231 and formed in a MESH shape to allow the second urea water to flow therein;
Wherein the elliptical shape of the ellipsoidal element is formed in the elliptical shape. 8. The method of claim 7,
The impurity removing unit 250 removes impurities,
A cylinder part 251 mounted on the upper part of the cyclone body part 210;
A piston portion 252 having one end inserted into the cylinder portion 251 and vertically movable;
A ring-shaped contact portion (not shown) mounted on the other end of the piston portion 252 so as to be in close contact with the outer surface of the filter pipe 232 and removing impurities on the outer surface of the filter pipe 232 while sliding in the vertical direction 253);
A vibrating part 254 attached to the outside of the cylinder part 251 and generating vibration when the contact part 253 is moved;
Wherein the elliptical shape of the ellipsoidal element is formed in the elliptical shape. The method according to claim 1,
The filtering device 300 includes an activated carbon filter 310, a bag filter 320, and a micro filter 330,
Wherein the activated carbon filter (310), the bag filter (320), and the micro filter (330) are sequentially disposed. The method according to claim 1,
Wherein the ratio of said element to said third number of elements is 31 wt% to 33 wt%. 10. A method of manufacturing urea water using the urea water producing apparatus according to any one of claims 1 to 10,
Dissolving the urea in water in the dissolution reactor 100 to produce a first urea water (S100);
Separating impurities from the first urea water by centrifugal force in the cyclone separator 200 to form a second urea water (S200);
Filtering the impurities from the second urea water to form a third urea water at the filtering device 300 (S300);
Sterilizing the third urea water using ultraviolet rays in the UV lamp 500 (S400); And
Storing the sterilized third urea water in the urea water storage tank (S 500);
The method of manufacturing a urea water according to claim 1,
A step (S600) of forming an impurity layer by collecting and depositing the impurities separated in the step (S200) of forming the second ellipsis in the dissolution reactor (100);
≪ / RTI > delete 12. The method of claim 11,
(S700) of spraying a cleaning liquid on the impurity layer in the cleaning section 170 to decompose the impurity layer;
≪ / RTI >

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