US1102131A - Apparatus for producing distilled water. - Google Patents

Description

B. BLEIGKEN.

APPARATUS FOR PRODUCING DISTILLED WATER APPLICATION FILED JAN. 19,1914. 1, 1 O2, 1 31 Patented June 30, 1914L m AI PUMP MAIN CONDENSER COOLING WATER TO BELOW SEA LEVEL water has no efiect on the water-level in the BERTHOLD- BLEICKEN, OF GRClSS-IBORSTEL, NEAR HAMBURG, GERMANY.

APPARATUS FOR PRODUQING DISTILLED WATER.

Specification of Letters I'atent.

Patented June 30, 1914.

Application flied January 19, 1914. Serial No. 813,085.

To all whom it may concern Be it known that I, BER'IHOLD BLEIGKEN, a citizen of the German Empire, and residing at Gross-Borstel, near Hamburg, Germany, have invented certain new and useful Improvements in Apparatus for Producing Distilled /Vater, of which the following is a specification.

My invention relates to apparatus for producing distilled water, in which the evaporation is effected in a partial vacuum.

A primary object of my invention is to provide an evaporator for ships in which the water level shall depend solely on the vacuum in the evaporator and on the height of the latter above the free water-level, and shall be independent of the quantity of water fed to the evaporator, while at the same time an undue increase in the salinit of the water in the evaporator is prevente It is thus possible to feed more water to the evaporator than is evaporated without any variation in the water-level in the evaporator, the surplus water being returned by a pipe terminating below the free water-level.

Owing to the constant excessive feed ofwater, the percentage of salt in the water cannot increase to any appreciable extent, so that it is unnecessary to periodically blow the excessively salt water out of the evaporator aS was hitherto unavoidable in vacuum evaporators such aS are used on shipboard. In addition, as an excessive feed of evaporator, the preheated cooling water of the condenser can be discharged at a high velocity into a descending pipe connecting the upper header of the evaporator with the lower one, whereby the circulation in the descending pipe and in the evaporator is considerably accelerated and the efliciency of the apparatus increased as a result. To these ends I provide the evaporator with a brine discharge conduit WhlCh terminates below a free water-level.

The invention consists in the construction, arran ement and combination of parts describe hereinafter and pointed out in the claims.

One illustrative embodiment of the invention adapted to produce distilled water on a sea-going steamer is represented by way of example in the accompanying drawing, wherein :-the figure is an e ovation of the whole apparatus.

The evaporator comprises a stack of tubes a, an upper header 6 and a lower header 0.

The tubes a are disposed within the smoke the outsidesof the tubes containing the seawater to be distilled. The evaporator is in communication with a pipe 1- which terminates at its lower end underneath the level of the sea outside the ship. A descending pipe f connects the upper header 6 with the lower header 0. The height of the header b .above sea level varies with the loading of the ship, but the level of the water in the header 1s maintained at a convenient height by regulating the degree of vacuum.

For the purpose of evaporating any water entrained by the steam, additional. tubes 6 are provided for drying the steam,

:which tubes pass from the upper header 6 I through the stack 2' to a condenser g, mount- 1 ed on the latter. By drying the steam, I insure the absence of salt in the distillate.

The cooling water for the condenser may be fed to the condenser by an type of pump and is led to the condenser by pipe :0. The condenser is provided with the cooling-water discharge pipe h, which is connected to the pipe 1' and is adapted to discharge the cooling water into the latter.

The pipe in is provided with the branch pipe on which opens in the form of a nozzle 3 into the pipe f, so that the discharged cooling water is able to enter the pipe f in the form of a powerful 'et. The condensation chamber of the con enser is provided with the outflow pipe (1. The latter leads to the water seal is which is connected by a pipe (not shown) with a suitable fresh water tank (also not shown). The condenser is connected b the pi e-u with an air-pump (not shownE: or wit an existing main condenser whic is also not shown.

The action of the a paratus is as follows :The evaporator 1s filled by openin the valve 2, whereupon the water rises wit a pressure corresponding to the draft of the ship, up to the water-line of the latter. On 0 ening the valve m the main condenser of t e air-pump is connected with the condenser g and with the evaporator, the result being t at the water to be evaporated rises according to the vacuum in the evaporator. The u per header of the evaporator is arrange so that a sufiiciently large evaporatw ing surface is obtained.

Owing to the water in the bank of tubes a being heated it rises in the same and flows through the pipe it into the conduit and another part through the branch ipe w in the form of a powerful jet into t e pipe f, whereby it exerts a suction action on the water flowing out of the header 6 and thereby correspondingly accelerates thecirculation.

Owing to its being possible to feed a surplus of condenser cooling-water to the evaporator the enrichment of the brine due to evaporation can be kept within certain limits. As the quantity of cooling water exceeds that of the distilled by 15 to 20 times, there is sufficient water at disposal for feeding the evaporator to keep the percentage of salt in the water to be evaporated equal to the small percentage of salt in the seawater, without the slightest variation in the water-level of the upper header. Since the water-level in the upper header is dependent only on the vacuum in the latter and on the height of the upper header above the level of the sea, all surplus water fed to the evaporator must flow back through the pipe 1' into the sea. lln this manner a reliable, continuous and automatic feed of the evaporator is insured without any regulating devices which are liable to interrupt the water feed, as well as energetic blowing on the evaporator without increased consumption of steam and without cooling the evaporator by pressing all the cooling water therethrough. The distillate formed in the condenser flows away throu h the pipe d, and the water-seal it; into t e fresh water tanks. r

1 claim A 1. lln apparatus for distilling water, the combination with an evaporator, of a descending pipe jconnectingga the upper portion of said evaporator with the lower portion thereof, a second pipe connected to the lower ortion of the evaporator and terminating low the level of the store of water to be distilled, a condenser connected to the upper portion of the evaporator, and a condenser cooling water pipe opening intothe u er part of said descending pipe and also dlfiverin below the level of the flow of water to be distilled.

2. In apparatus for distilling sea-water, the combination of an evaporator comprising an upper header and a lower header, and connecting pipes between said headers a condensing chamber connected to the u per header, a descending pipe connecting t e upper header with the lower header, a second pipe connected to the lower header and terminating below the level of the sea, and a condenser cooling-water pipe opening into the upper part of said descending pipe and into thesecond pipe.

.l lln testimony whereof, I affix my signature in the presence of two witnesses.

BERTHQLD lBLElCKEN.

Witnesses:

CARL Sonernn, Emir. Hanan.

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