AU597133B2 - Improved pipe reactor for the manufacture of ammonium phosphates containing ammonium sulfate - Google Patents

Improved pipe reactor for the manufacture of ammonium phosphates containing ammonium sulfate Download PDF

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Publication number
AU597133B2
AU597133B2 AU82652/87A AU8265287A AU597133B2 AU 597133 B2 AU597133 B2 AU 597133B2 AU 82652/87 A AU82652/87 A AU 82652/87A AU 8265287 A AU8265287 A AU 8265287A AU 597133 B2 AU597133 B2 AU 597133B2
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AU
Australia
Prior art keywords
pipe
pipe reactor
washing
brines
water
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
AU82652/87A
Other versions
AU8265287A (en
Inventor
Dimitrios Belis
Pierre Chinal
Jean Francois Priat
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CDF Chimie Azote et Fertilisants SA
Original Assignee
CDF Chimie Azote et Fertilisants SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CDF Chimie Azote et Fertilisants SA filed Critical CDF Chimie Azote et Fertilisants SA
Publication of AU8265287A publication Critical patent/AU8265287A/en
Application granted granted Critical
Publication of AU597133B2 publication Critical patent/AU597133B2/en
Anticipated expiration legal-status Critical
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/26—Nozzle-type reactors, i.e. the distribution of the initial reactants within the reactor is effected by their introduction or injection through nozzles
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00076—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements inside the reactor
    • B01J2219/00081—Tubes

Abstract

Tubular reactor incorporating a convergent-divergent member or a convergent member at the exit of the zone for introducing reactants and a convergent-divergent member or a convergent member at the exit of the reaction zone just before the exit nozzle for the finished products. <IMAGE>

Description

I7 59
I
133 Form COMMONWEALTH OF AUSTRALIA PATEN rS ACT 1952-69 COMPLETE SPECIFICATION
(ORIGINAL)
Class Application Number: Lodged: I t. Class Complete Specification Lodged; Accepted: Published: Priority: Th is (kcument contains the1 aineiidrnents made under Section 49 and is correct, for printing.
Related Art Name of Arzolicant: ,Address of Applicant; A tual Inventor Address for Service CdF CHIMIE AZOTE ET FERTILIZANTS 143, Route France d'Espagne, No. 3145, F-31053 Toulouse, DIMITRIOS ARRIANOU I3ELIS, PIERRE CHINAL and JEAN FRLANCOIS PRI AT EDWD. WATERS SONS, 50 QUEEN STREET, MELBOURNE, AUSTRALIA, 3000.
Complete Specification for the invention entitled: IMPROVED PIPE REACTOR FOR THE MANUFACTURE OF AMMONIUM PHOSPHATES CONTAINING AMMONIUM SULFATE The following statement Is a full description of this Invention, Including the best method of performing It known to us 1.
I IMPROVED PIPE REACTOR FOR THE MANUi CTURE OF AMMONIUM PHOSP1IATES CONTAINING AMMONIUM SULFATE.
The present invention relates to an improved pipe reactor for the manufacture of ammonium phosphates containing ammonium sulfate. These ammonium sulfate containing ammonium phosphates are used as fertilizers and the proportion of ammonium sulfate varies with the desired fertilizer formula.
Pipe reactors are well known. They are composed by a length of pipe containing no inside stuffing. Most generally used pipe reactors are horizontally set or stands at small angle to an horizontal line (at most They have an inside diameter ranging between 200 mm and 10 mm and a S length ranging between 1.50 meter and 10 meters. The ratio length/diameter is usually not below 50. Pipe reactors have been described for example in the following patents USP 3,,954,942 and 3,310,371 and Frenci Patents 2,172,826 and 2,199,478.
15 Pipe reactors are used for the neutralization by ammonia of acids, Smore particularly of phosphoric acid for the manufacture of ammonium phosphates -e4+polyphosphates or of mixtures of phosphoric acid and sulfuric acid. Generally pipe reactors are located at the inlet of a granulator or a dryer. The gas flowing out of granulator or dryer are washed and washing 20 brines are often recycled in the fertilizer unit, particularly in the pipe reactor.
I.
The present invention relates to a pipe reactor for manufacturing ammonium phosphates containing ammonium sulfate in which water and/or washing brines are introduced. In the latter case, as a mixture of phosphoric and sulfuric acid is neutralized many corrosion problems arise. In order to lessen corrosion it has been proposed to dilute ammonia with water and/or washing brines (USP 3,954,942) but the ammonia injector is still corroded.
It is quite impossible to dilute sulfuric acid before its introduction in r i i i i Il~i~ the pipe reactor because sulfuric acid dilution is highly exothermic. One of the solutions presently used is the predilution of phosphoric acid. But corrosion risks do not reach zero and it is necessary to sheath with polytetrafluoroethylene the whole internal surface of the head of the pipe reactor.
But the setting of the sheath requests for difficult finishing and fitting, more specially as polytetrafluoroethylene has a high dilatation coefficient. Furthermore no piece of polyfluorotetraethylene having large dimensions are commercialized and a great number of pieces must be adjusted in o order to sheath the head of the pipe reactor. The applicant has tried to in- ,10 troduce into the pipe water reactor and/or whahing brines and ammonia °I°o through two pipes parallel to the axis of the pipe reactor. But then the I o.:i corrosion of the water and/or washing brines pipe is very rapid.
S The pipe reactor according to the present application allows to prepare ammonium phosphates containing ammonium phosphae\without corrosion ,,15 problem.
The present invention concerns an improved pipe reactor for the manufacture of ammonium phosphates containing ammonium sulfate fitted at its a it o head with pipes for feeding phosphoric acid, sulfuric acid, liquid ammonia and water and/or washing brines characterized in that the feeding pipe for water and/or washing brines and the feeding pipe for liquid ammonia are con- 0 centric and axially mounted with respect to the axis of the pipe reactor and in that the feeding pipe for water and/or washing brines is fitted inside the feeding pipe for liquid ammonia.
It has been noted that no corrosion takes place, particularly no corrosion of the feed pipe for water and/or washing brines.
The description given herebelow of an improved pipe reactor and the annexed figure will allow to hetter understand the invention.
The annexed figure is a partial longitudinal cross-section of a pipe reactor -2- S- :0 r According to the embodiment shown on the figure the head of the pipe reactor is fitted with a feed pipe for a mixture of sulfuric and phosphoric acid. This feed pipe opens perpendicularly in the pipe reactor The feed pipe could open tangentially in the pipe reactor Phosphoric acid and sulfuric acid could also be introduced through two separate pipes, preferably diametrically set, these two pipes opening either perpendicularly or tangentially with respect to the pipe reactor Feed pipe for water and/or washing brines and fe pipe for liquid ammonia are axially mounted in the pipe reactor Feeding pipes nd :10 are concentric and feed pipe for water and/or washing brines is So inside feed pipe for ammonia. Liquid ammonia flows in the annular space o provided between feed pipes and Therefore water and/or washing brines are cooled by liquid ammonia. Feed pipes and are preferably made out of stainless steel. The external surface of feed pipe for 15 liquid ammonia can optionally be coated with polyfluorotetraethylene.
EXAMPLE
In a pipe reactor having an inside diameter of 150 mm and a length of 5,00 m are introduced 12 t/h of liquid ammonia 18 m 3 /h of 93 sulfuric acid m3/h of 26 phosphoric acid 12 m 3 /h of washing brins issued from the granulation unit.
When a pipe reactor is used having the same head as that represented on annexed figure except that the feeding pipe for washing brines and feeding pipe for liquid ammonia are not concentric, but separated and parallel to the axis of tube The feeding tube for washing brines is eaten away in less than 10 days.
When, as represented on the annexed figure, feed pipes and (4) are concentric, feed pipe is not eaten away after one year.
3

Claims (2)

1. An improved pipe reactor for the manufacture of ammonium phosphates containing ammonium sulfate fitted at its head with feed pipes for phosphoric acid, sulfuric acid, liquid ammonia and water and/or washing brines, characterized in that feed pipe for water and/or washing brines and feed pipe for liquid ammonia are concentric and axially set in respect of the axis of the pipe reactor and that the feed pipe for water and/or washing -w t-e is set inside the feed pipe for liquid ammonia.
2. An improved pipe reactor as claimed in claim 1, 0* substantially as herein described with reference to the 4t accompanying figures and the example. DATED this 16th day of December 1987. 44 .1 CdF CHIMIE AZOTE ET FERTILIZANTS o rt EDWD. WATERS SONS PATENT ATTORNEYS 50 QUEEN STREET MELBOURNE. VIC. 3000. W-r-r i; i
AU82652/87A 1986-12-18 1987-12-17 Improved pipe reactor for the manufacture of ammonium phosphates containing ammonium sulfate Expired AU597133B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GR862922A GR862922B (en) 1986-12-18 1986-12-18 Tubular reactor
GR862922 1986-12-18

Publications (2)

Publication Number Publication Date
AU8265287A AU8265287A (en) 1988-06-23
AU597133B2 true AU597133B2 (en) 1990-05-24

Family

ID=10925510

Family Applications (2)

Application Number Title Priority Date Filing Date
AU82651/87A Expired AU600060B2 (en) 1986-12-18 1987-12-17 New pipe reactor
AU82652/87A Expired AU597133B2 (en) 1986-12-18 1987-12-17 Improved pipe reactor for the manufacture of ammonium phosphates containing ammonium sulfate

Family Applications Before (1)

Application Number Title Priority Date Filing Date
AU82651/87A Expired AU600060B2 (en) 1986-12-18 1987-12-17 New pipe reactor

Country Status (12)

Country Link
EP (2) EP0272974B1 (en)
JP (2) JP2511823B2 (en)
CN (2) CN1013490B (en)
AT (2) ATE63105T1 (en)
AU (2) AU600060B2 (en)
DE (2) DE3787457T2 (en)
DZ (2) DZ1165A1 (en)
ES (2) ES2043683T3 (en)
GR (2) GR862922B (en)
MA (2) MA21133A1 (en)
OA (2) OA08702A (en)
TN (2) TNSN87140A1 (en)

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FR2695840B1 (en) * 1992-09-22 1994-10-21 Grande Paroisse Sa Tubular reactor, process for neutralizing acids with NH3 and process for manufacturing fertilizers containing ammonium phosphates, sulfates, nitrates and / or fluosilicates using such a tubular reactor.
DE4437047A1 (en) * 1994-10-17 1996-04-18 Bayer Ag Process for the dinitration of aromatic compounds
FR2755959B1 (en) * 1996-11-18 1998-12-24 Kaltenbach Thuring Sa REACTOR, PROCESS AND PLANT FOR THE MANUFACTURE OF AMMONIA SALTS
ES2208068B1 (en) * 2002-04-15 2005-03-16 Incro, S.A. TUBULAR REACTOR FOR OBTAINING AMONIC SALTS EMPLOYED IN THE MANUFACTURE OF FERTILIZERS.
CN1986042B (en) * 2005-12-21 2010-07-14 中国-***化肥有限公司 Improved tubular reactor
CN101036871B (en) * 2006-03-17 2011-09-14 北京航天石化技术装备工程公司 High-pressure liquid air tube type quick mixing reactor
US8082860B2 (en) 2008-04-30 2011-12-27 Babcock Power Services Inc. Anti-roping device for pulverized coal burners
US8104412B2 (en) * 2008-08-21 2012-01-31 Riley Power Inc. Deflector device for coal piping systems
CN101768026B (en) * 2009-12-28 2012-08-15 瓮福（集团）有限责任公司 Method for producing sulfur fertilizer by using diammonium phosphate device to add sulfur powder
CN102240529B (en) * 2011-04-28 2012-07-18 张胜钊 Synthesizing device and method for synthesizing formate by utilizing same
SE536607C2 (en) * 2012-06-21 2014-03-25 Easymining Sweden Ab Preparation of ammonium phosphates
CN102835404B (en) * 2012-09-27 2014-04-16 贵州大学 Agricultural chemical for preventing and controlling rice blast
CN106268499A (en) * 2015-05-29 2017-01-04 林新吉 Automatization's granulating system and comminutor thereof
JP2018197214A (en) * 2017-05-24 2018-12-13 日本合成アルコール株式会社 Manufacturing method of alcohol
CN112121618A (en) * 2020-08-13 2020-12-25 广东臻鼎环境科技有限公司 Device and method for improving liquid ammonia absorption efficiency
EP4194704A1 (en) 2021-12-13 2023-06-14 Yara International ASA Jet ejector arrangement, system and use thereof and method for operating the same

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Also Published As

Publication number Publication date
GR3002412T3 (en) 1992-12-30
DE3787457D1 (en) 1993-10-21
ES2022427B3 (en) 1991-12-01
MA21134A1 (en) 1988-07-01
JPH01119506A (en) 1989-05-11
CN87107538A (en) 1988-07-20
EP0272974A3 (en) 1989-03-15
DZ1164A1 (en) 2004-09-13
EP0272974B1 (en) 1993-09-15
OA08702A (en) 1989-03-31
TNSN87140A1 (en) 1990-01-01
AU8265187A (en) 1988-06-23
DE3769771D1 (en) 1991-06-06
DZ1165A1 (en) 2004-09-13
CN87107537A (en) 1988-08-24
ATE94419T1 (en) 1993-10-15
EP0272183B1 (en) 1991-05-02
AU8265287A (en) 1988-06-23
OA08790A (en) 1989-03-31
EP0272183A1 (en) 1988-06-22
TNSN87139A1 (en) 1990-01-01
EP0272974A2 (en) 1988-06-29
ES2043683T3 (en) 1994-01-01
JP2511823B2 (en) 1996-07-03
CN1017874B (en) 1992-08-19
ATE63105T1 (en) 1991-05-15
JP2776504B2 (en) 1998-07-16
DE3787457T2 (en) 1994-03-10
MA21133A1 (en) 1988-07-01
CN1013490B (en) 1991-08-14
GR862922B (en) 1987-01-12
JPH01127035A (en) 1989-05-19
AU600060B2 (en) 1990-08-02

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