CROSS REFERENCE TO RELATED APPLICATIONS AND CLAIM OF PRIORITY

This application claims benefit under 35 U.S.C. 119(e), 120, 121, or 365(c), and is a National Stage entry from International Application No. PCT/KR2018/003241, filed Mar. 21, 2018, which claims priority to the benefit of Korean Patent Application Nos. 10-2017-0036246 filed on Mar. 22, 2017 and 10-2017-0036275 filed on Mar. 22, 2017 in the Korean Intellectual Property Office and, the entire contents of which are incorporated herein by reference.

TECHNICAL FIELD

The present disclosure relates to a nozzle block, a wet scrubber device including the nozzle block and a fume hood with the wet scrubber device, and more particularly, to a nozzle block for ejecting a fluid into a free space at a high speed, a wet scrubber device including the nozzle block for capturing solid, liquid or gas particles floating in contaminated gas using the fluid in the nozzle block, and a fume hood with the wet scrubber device.

BACKGROUND ART

Exhaust gas emitted in the chemical plant, steel industry and semiconductor fabrication process is highly toxic, explosive and corrosive, so it is harmful for human body, and when it is released in air without any treatment, it causes environmental pollution.

Accordingly, before releasing exhaust gas, a purification treatment process for reducing the content of harmful substances included in exhaust gas below the allowed concentration is necessarily required, and reducing the content of harmful substances below the allowed concentration is legally mandatory.

In the chemical plant, steel industry and semiconductor fabrication process as described above, a wet scrubber device is designed to reduce the content of harmful substances (gas including acid or alkali) included in exhaust gas, and is a device that forms a liquid membrane or droplets to purify gas contaminated by contact with dirty gas.

The wet scrubber device is used to treat dirt, odor and harmful gas at the same time, and in most cases, water is used for a purifying solution, but solvents may be used depending on the solubility of contaminants.

However, the conventional wet scrubber device commonly used has low removal efficiency in the harmful substance treatment process, failing to completely remove harmful substances, and accordingly harmful substances are released in air, causing environmental pollution.

Additionally, because the purifying solution is sprayed in one direction from a plurality of nozzles provided in a nozzle assembly that sprays the purifying solution, the purifying solution is not uniformly distributed over a wide area, resulting in the reduced contact ratio with contaminated gas.

The background art of the present disclosure is disclosed by Korean Patent No. 10-1541890 (Date of publication after issuance of the patent: Aug. 6, 2015) and Korean Patent Publication No. 10-2010-0000552 (Date of publication of the patent application: Jan. 6, 2010).

SUMMARY

The present disclosure is designed under the above-described background, and therefore the present disclosure is directed to providing a nozzle block that uniformly sprays a fluid over the entire housing inside through a spray nozzle with the rotation of a nozzle coupling part, thereby increasing a contact ratio of the fluid with contaminated gas and dramatically improving the purification efficiency.

The present disclosure is further directed to providing a wet scrubber device including a nozzle block that allows a fluid for cleaning contaminated gas to flow opposite to a flow of contaminated gas, so that the contaminated gas and the fluid cancel out, increasing a contact ratio, and a fume hood with the wet scrubber device.

To achieve the above-described object, an embodiment of the present disclosure provides a nozzle block including a support axis coupled to an inside of a housing, and having a water supply channel connected with a fluid supply part to transport a fluid supplied from the fluid supply part, a nozzle coupling part rotatably coupled to a lower end of the support axis, and having a fluid movement passage that is in communication with the water supply channel to transport the fluid, and a plurality of spray nozzles mounted in the nozzle coupling part in a radial direction, and having a spray passage that is in communication with the fluid movement passage to transport the fluid, and a spray port to spray out the fluid in the spray passage, wherein a spray propulsive force is generated by the fluid sprayed through the spray nozzle so that the nozzle coupling part rotates in one direction or opposite direction.

Additionally, in the present disclosure, the nozzle block further includes an upper friction reducing member interposed between the support axis and the nozzle coupling part to fix a position of the nozzle coupling part while supporting the rotating nozzle coupling part.

Additionally, in the present disclosure, the nozzle block further includes a nozzle coupling part cover coupled to the nozzle coupling part, surrounding the friction reducing member, to allow the fluid supplied from the fluid supply part to move to the spray nozzle while preventing leakage.

Additionally, in the present disclosure, the nozzle coupling part has a plurality of rotation inducing parts at a lower end, the rotation inducing parts being spaced apart along a circumferential direction and sloping at a same inclination angle as a rotation direction radially from a center axis part to rotate by rising air currents of contaminated gas discharged through the housing.

Additionally, in the present disclosure, the nozzle block further includes a lower friction reducing member interposed between the housing and the nozzle coupling part to fix a position of the nozzle coupling part while supporting the rotating nozzle coupling part.

Meanwhile, to achieve the above-described object, a wet scrubber device according to the present disclosure includes a body having a storage part in which a fluid is collected therein, one or more inlets in a lower part, through which contaminated gas is introduced, and an exhaust port in an upper part to collect and discharge the contaminated gas introduced through the inlet, a cleaning module installed on the exhaust port to spray a fluid pumped by a circulation pump of a neutralization device toward the contaminated gas being discharged, and one or more pall rings installed between the exhaust port and the cleaning module to increase an effective contact area of the contaminated gas and the fluid.

Additionally, in the present disclosure, the body includes a reservoir having the storage part and one or more inlets, and a discharge guide cover coupled on the reservoir, and having the exhaust port and a gas capturing part that slopes up toward the exhaust port.

Additionally, in the present disclosure, the cleaning module includes a housing installed on the gas-liquid contact module, and a spray nozzle block installed on the housing and having one or more spray ports to spray the fluid pumped by the circulation pump of the neutralization device toward the contaminated gas being discharged.

Additionally, in the present disclosure, the cleaning module further includes a fluid spray nozzle block having a nozzle coupling part rotatably coupled below the spray nozzle block, and a plurality of spray nozzles mounted in the nozzle coupling part in a radial direction, each having a spray port to spray the fluid pumped by the circulation pump of the neutralization device toward the contaminated gas being discharged.

Additionally, in the present disclosure, the wet scrubber device further includes a demister installed on the cleaning module to prevent the sprayed fluid from splashing out and separate and remove impurities included in the contaminated gas.

Meanwhile, to achieve the above-described object, a fume hood with a wet scrubber device according to the present disclosure includes the wet scrubber device, a first level sensor which senses a liquid level in a storage part, a pH sensor which senses a fluid acidity in a bottom tank, and a control part which performs control to block the fluid supply to the wet scrubber device when the first level sensor senses the liquid level in the storage part as ‘High’ according to a preset value, and to supply an acidity adjusting reagent of a neutralizing solution tank to the bottom tank when the pH sensor senses the fluid acidity in the bottom tank and the acidity is outside of a preset value.

According to an embodiment of the present disclosure, a fluid is uniformly sprayed over the entire housing inside through the spray nozzle with the rotation of the nozzle coupling part, thereby increasing a contact ratio of the fluid with contaminated gas and dramatically improving the purification efficiency.

Additionally, the packing member prevents fluid leakage, and a fluid ejected through the spray port of the spray nozzle by the nozzle coupling part cover is stably supplied through the nozzle coupling part while leakage is prevented.

Additionally, a fluid for cleaning contaminated gas is allowed to flow opposite to a flow of contaminated gas, so that the contaminated gas and the fluid cancel out, and a contact ratio increases.

Additionally, contaminated gas introduced through the inlet is primarily cleaned by the first gas-liquid contact module, and then cleaned again by the second gas-liquid contact module, thereby purifying and stabilizing violently poisonous contaminated gas that is highly toxic, flammable and corrosive, to the maximum extent.

Additionally, a fluid extends over a wide area through the spray nozzle, thereby increasing a contact ratio of the fluid with contaminated gas and dramatically improving the purification efficiency.

Additionally, the neutralization device optimized to suit the treatment according to the concentration of alkaline contaminated gas is provided, contributing to the improved gas treatment efficiency of the scrubber device.

Additionally, the wet scrubber device reduces in size, and can be easily installed in benches, fume hoods, reagent markets and safety cabinets.

