# US 4,396,581 A · Apparatus for making phosphorus pentasulfide

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- Number: US 4,396,581 A
- Document ID: US4396581A
- Status: Granted
- Kind: A
- Application number: 06/330,228
- Filed: 1981-12-14
- Granted: 1983-08-02
- Earliest claimed: 1980-12-17
- Assignees: Hoechst Aktiengesellschaft
- Inventors: Hans-Dieter Benscheidt; Friedrich Neumann; Gunter Reichert; Hermann Niermann
- Web page: https://patentgrep.com/patent/US4396581A

## CPC

- B01J 4/001: {Feed or outlet devices as such, e.g. feeding tubes}
- B01F 35/712: {for feeding fluids}
- B01F 35/717: {characterised by the means for feeding the components to the mixer}
- C01B 25/14: Sulfur, selenium, or tellurium compounds of phosphorus
- Y10T 137/8626: Swinging outlet pipe or spout
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01F: MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING (mixing paints B44D3/06)
- C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C}
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

The invention relates to an apparatus for making P.sub.2 S.sub.5 comprised of a plurality of reactors connected by pipe structures to a collecting tank which is common to all of them. By means of partitions, the cooling tank is subdivided into a plurality of separate chambers. Outlet pipes open thereinto and terminate in collecting devices. The pipe structures running to the collecting tank are pivotably arranged above the various chambers and permit liquid P.sub.2 S.sub.5 to be introduced thereinto at will.

## Claims

### Claim 1

In an apparatus for making P.sub.2 S.sub.5 comprised of a plurality of reactors and one liquid P.sub.2 S.sub.5 -collecting tank which is common to all of the reactors, the tank being provided with a plurality of feed pipes running from the various reactors and having a cooling device placed downstream thereof, the improvement wherein the collecting tank (1) has a plurality of cooling devices (5,6,7) arranged downstream thereof and connected thereto by means of separate outlet pipes (2,3,4), the collecting tank being subdivided by partitions (8,9) into a plurality of separate chambers (10,11,12) corresponding in number to the number of outlet pipes (2,3,4) which open thereinto, feed pipes (13,14) being pivotably arranged above the chambers (10,11,12) so as to permit liquid P.sub.2 S.sub.5 to be introduced into a selected chamber at will.

### Claim 2 (depends on 1)

The apparatus as claimed in claim 1, wherein the outlets (2, 3, 4) in chambers (10, 11, 12) are bottom outlets.

### Claim 3 (depends on 1)

The apparatus as claimed in claim 1, wherein the outlets (2, 3, 4) in chambers (10, 11, 12) are overflows terminating at a level lower than the upper end of the partitions (8, 9) and considerably above the bottom of chambers (10, 11, 12).

### Claim 4 (depends on 3)

The apparatus as claimed in claim 3, wherein the chambers (10, 11, 12) have agitators (15) installed therein.

### Claim 5 (depends on 1)

The apparatus as claimed in claim 1, wherein the upper ends of the partitions terminate at different levels, the individual partitions (8, 9) forming in each case an overflow between two adjacent chambers (10, 11, 12) with different filling volumes.

### Claim 6 (depends on 1)

The apparatus as claimed in claim 1, wherein different cooling devices are provided.

### Claim 7 (depends on 6)

The apparatus as claimed in claim 6, wherein the cooling device (5, 6, 7) most unsusceptible to disturbances is connected to the chamber (10, 11, 12) with the lowest filling volume.