scrubber


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Related to scrubber: Venturi scrubber

scrubber

1
an apparatus for purifying a gas

scrubber

2
Austral a domestic animal, esp a bullock, that has run wild in the bush

Scrubber

 

any one of various apparatus designed to wash gases with liquids in order to purify the gas or extract one or several components; the term also applies to drum machines used to wash minerals. Scrubbers are also widely used in collecting the products of coking processes and in removing dust from industrial gases (seeBY-PRODUCT COKE CHEMISTRY and GAS PURIFICATION), in humidifying and cooling gases, and in various processes in chemical engineering.

Scrubbers used to wash minerals up to 250–300 mm in size are cylindrical or conical drums. Material loaded into the scrubber is transported within the drum by internal augers or blades and is washed by water fed into the drum; any admixtures of clay are thus washed away. Flow-through scrubbers are used for materials that are relatively easy to wash. In such scrubbers the materials and the water move in the same direction, from the feed end to the unloading end, and are discharged together. Counterflow scrubbers are used for difficult-to-wash materials. In such scrubbers the water is fed from the unloading end and flows in a direction opposite to the motion of the material being washed.

Scrubbers may be designed for washing only or they may combine washing and sieving of the material. In the latter case, a drum with one end sealed is fitted with a conical, perforated fixture that extracts the water and fine material to be removed. A blade mill is a special type of scrubber, in which a rotating shaft with blades passes through the center of the drum.

Scrubbers have the following specifications: length, 3–10 m, diameter, 1.5–4 m; and water consumption, 3–6 m3/ton. The washing time depends on the degree of contamination and ranges from 2 to 12 min; the output is 25 to 200 tons.

scrubber

[′skrəb·ər]
(engineering)
A device for the removal, or washing out, of entrained liquid droplets or dust, or for the removal of an undesired gas component from process gas streams. Also known as washer; wet collector.
(mining engineering)
A device, such as a wash screen, wash trommel, log washer, and hydraulic jet or monitor, in which a coarse and sticky material, for example, ore or clay, is either washed free of adherents or mildly disintegrated.
References in periodicals archive ?
Due to the recent strong uptick in scrubber orders, some bottlenecks are developing in relation to the installation of scrubber systems.
Singapore, China and Fujairah in the United Arab Emirates have already banned the use of the cleaning systems, called open loop scrubbers, from the start of next year when the new IMO rules come into force.
Yara Marine has delivered more than 100 scrubbers representing an aggregate operation of some two million hours, said a statement from the company.
Summary: New Delhi [India], Nov 20 (ANI-BusinessWireIndia): Most households tend to face the issue of having smelly scrubbers. The existence of bacteria propagates extensively in the presence of food particles that are invariably stuck in the scrubbers.
CAPEX related to the confirmed scrubber orders is on average estimated below USD2m per scrubber, including installation costs.
NORDIC BUSINESS REPORT-September 12, 2018-DFDS plans DKK300m investment in 2019 to install scrubbers on 12 freight ferries
(CHI), a state-owned Chinese shipbuilder based in Shanghai - on manufacturing and marketing rectangular sulfur-oxide (SOx) scrubbers. The scrubber which was developed by those two MHI Group companies features a rectangular shape that realizes superior space saving essential for onboard installations.
International Resource News-April 18, 2017--LiqTech International receives order for standardised systems for treatment of waste water from marine scrubbers
Absent intervening events, Eversource and its stockholders can now recover nearly the entire scrubber investment and over-market costs of the PPAs through a non-bypassable charge to all business and residential ratepayers within its service territory.
The Condor and Corsar will each receive a hybrid PureSOx system with multiple inlets, connecting the main engine and two auxiliary engines to one U-design scrubber. In contrast to earlier systems with multiple inlets, the inlets will now lead into a single scrubber jet section -- an advance in construction that will make the scrubber even more compact.
The DynaWave reverse jet scrubber is an open duct in which scrubbing liquid is injected, through a non-restrictive reverse jet noz-zle, counter current to the dirty inlet gas.