DE60112315D1 - Verfahren zur entfernung von verunreinigungen in harnstoffhydrolysereaktoren - Google Patents

Verfahren zur entfernung von verunreinigungen in harnstoffhydrolysereaktoren

Info

Publication number
DE60112315D1
DE60112315D1 DE60112315T DE60112315T DE60112315D1 DE 60112315 D1 DE60112315 D1 DE 60112315D1 DE 60112315 T DE60112315 T DE 60112315T DE 60112315 T DE60112315 T DE 60112315T DE 60112315 D1 DE60112315 D1 DE 60112315D1
Authority
DE
Germany
Prior art keywords
ureahydryrolyseractors
removing contamination
feedstock
reactors
intermittent
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 - Lifetime
Application number
DE60112315T
Other languages
English (en)
Other versions
DE60112315T2 (de
Inventor
W Macarthur
A Jessup
Burton Brooks
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.)
Chemithon Corp
Original Assignee
Chemithon Corp
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 Chemithon Corp filed Critical Chemithon Corp
Publication of DE60112315D1 publication Critical patent/DE60112315D1/de
Application granted granted Critical
Publication of DE60112315T2 publication Critical patent/DE60112315T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B01D19/02—Foam dispersion or prevention
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2433—Discharge mechanisms for floating particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2488—Feed or discharge mechanisms for settling tanks bringing about a partial recirculation of the liquid, e.g. for introducing chemical aids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
    • 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
    • B01J19/02—Apparatus characterised by being constructed of material selected for its chemically-resistant properties
    • 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
    • B01J7/00—Apparatus for generating gases
    • B01J7/02—Apparatus for generating gases by wet methods
    • 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
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
    • B01J8/20—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles with liquid as a fluidising medium
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/02—Preparation, purification or separation of ammonia
    • C01C1/08—Preparation of ammonia from nitrogenous organic substances
    • C01C1/086—Preparation of ammonia from nitrogenous organic substances from urea
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
    • B01D21/262—Separation of sediment aided by centrifugal force or centripetal force by using a centrifuge
    • 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
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00017—Controlling the temperature
    • B01J2208/00026—Controlling or regulating the heat exchange system
    • B01J2208/00035—Controlling or regulating the heat exchange system involving measured parameters
    • B01J2208/00044—Temperature measurement
    • B01J2208/00061—Temperature measurement of the reactants
    • 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
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00017—Controlling the temperature
    • B01J2208/00026—Controlling or regulating the heat exchange system
    • B01J2208/00035—Controlling or regulating the heat exchange system involving measured parameters
    • B01J2208/00079—Fluid level measurement
    • 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
    • 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
    • B01J2219/00182—Controlling or regulating processes controlling the level of reactants in the reactor vessel

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Analytical Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Cephalosporin Compounds (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Detergent Compositions (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
DE60112315T 2000-08-28 2001-08-22 Verfahren zur entfernung von verunreinigungen in harnstoffhydrolysereaktoren Expired - Lifetime DE60112315T2 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US22853900P 2000-08-28 2000-08-28
US228539P 2000-08-28
US09/708,897 US6511644B1 (en) 2000-08-28 2000-11-08 Method for removing contaminants in reactors
US708897 2000-11-08
PCT/US2001/041817 WO2002018273A2 (en) 2000-08-28 2001-08-22 Method for removing contaminants in urea hydrolysis reactors

Publications (2)

Publication Number Publication Date
DE60112315D1 true DE60112315D1 (de) 2005-09-01
DE60112315T2 DE60112315T2 (de) 2006-05-24

Family

ID=26922453

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60112315T Expired - Lifetime DE60112315T2 (de) 2000-08-28 2001-08-22 Verfahren zur entfernung von verunreinigungen in harnstoffhydrolysereaktoren

Country Status (7)

Country Link
US (1) US6511644B1 (de)
EP (1) EP1322553B1 (de)
JP (1) JP5415659B2 (de)
AT (1) ATE300501T1 (de)
AU (1) AU2001285469A1 (de)
DE (1) DE60112315T2 (de)
WO (1) WO2002018273A2 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6761868B2 (en) * 2001-05-16 2004-07-13 The Chemithon Corporation Process for quantitatively converting urea to ammonia on demand
US20030211024A1 (en) * 2002-05-10 2003-11-13 Wojichowski David Lee Methods of converting urea to ammonia for SCR, SNCR and flue gas conditioning
US6887449B2 (en) * 2002-11-21 2005-05-03 The Chemithon Corporation Method of quantitatively producing ammonia from urea
US20080267837A1 (en) * 2007-04-27 2008-10-30 Phelps Calvin E Conversion of urea to reactants for NOx reduction
US20090148370A1 (en) 2007-12-06 2009-06-11 Spencer Iii Herbert W Process to produce ammonia from urea
US9863725B1 (en) 2012-02-29 2018-01-09 The United States Of America As Represented By The Secretary Of The Air Force Systems and methods for thermal management through use of ammonium carbamate
US8999277B2 (en) 2013-06-17 2015-04-07 Deere & Company Diesel exhaust fluid formulation that reduces urea deposits in exhaust systems
US8961818B2 (en) 2013-06-17 2015-02-24 Deere & Company Diesel exhaust fluid formulation that reduces urea deposits in exhaust systems
US9586831B2 (en) 2014-06-09 2017-03-07 Wahlco, Inc. Urea to ammonia process
CN104474892A (zh) * 2014-12-09 2015-04-01 邹英奎 一种脱硝粉的生产方法
KR102234371B1 (ko) * 2019-11-11 2021-03-31 한국지역난방공사 요소수 기화챔버내 스케일 누적 방지 장치

Family Cites Families (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3758572A (en) 1971-04-26 1973-09-11 Dow Chemical Co Process for recovering urea from pyrolysis systems
US3826815A (en) 1972-06-21 1974-07-30 I Mavrovic Recovery of residual ammonia from weak aqueous solutions thereof
US3922222A (en) 1973-02-20 1975-11-25 Cf Ind Method for treatment of urea crystallizer condensate
IT1014987B (it) * 1974-06-12 1977-04-30 Snam Progetti Procedimento integrato urea am moniaca
IT1034674B (it) * 1975-03-28 1979-10-10 Snam Progetti Processo flessibile intergrato per la produzione di ammoniaca edurea
IT1068268B (it) 1976-09-09 1985-03-21 Snam Progetti Procedimento per la produzione di urea e purificazione delle acque
US4341640A (en) 1976-09-27 1982-07-27 Standard Oil Company Urea hydrolysis
JPS5352274A (en) 1976-10-25 1978-05-12 Mitsui Toatsu Chem Inc Treating method for aqueous solution containing urea, ammonia and carbondioxide
NL168196C (nl) * 1976-11-03 1982-03-16 Stamicarbon Werkwijze voor het afscheiden van nh&013 en co&012 uit een mengsel van nh&013, co&012 en h&012o.
AT351135B (de) 1977-06-08 1979-07-10 Oemv Ag Verfahren und vorrichtung zur reinigung von harnstoffloesungen
JPS5951481B2 (ja) 1977-06-08 1984-12-14 クロリン エンジニアズ株式会社 二酸化塩素の製造方法
US4087513A (en) 1977-08-12 1978-05-02 Olin Corporation Method of hydrolyzing urea contained in waste water streams
US4220635A (en) 1978-03-20 1980-09-02 Olin Corporation Catalytic method for hydrolyzing urea
US4168299A (en) 1978-03-20 1979-09-18 Olin Corporation Catalytic method for hydrolyzing urea
NL7903623A (nl) 1979-05-09 1980-11-11 Stamicarbon Werkwijze voor het zuiveren van ureumhoudend afvalwater en werkwijze voor het bereiden van melamine.
NL8100989A (nl) 1981-02-28 1982-09-16 Unie Van Kunstmestfab Bv Werkwijze voor het verwijderen van ureum, ammoniak en kooldioxide uit verdunde waterige oplossingen.
NL8102391A (nl) 1981-05-15 1982-12-01 Unie Van Kunstmestfab Bv Werkwijze voor het winnen van waardevolle bestanddelen uit de afvalstromen verkregen bij de ureumbereiding.
FR2512813A1 (fr) 1981-09-16 1983-03-18 Rhone Poulenc Chim Base Procede de carbonylation des dienes conjugues en presence d'un catalyseur au palladium avec recyclage dudit catalyseur
JPS5982987A (ja) 1982-11-05 1984-05-14 Toyo Eng Corp 尿素を含有する希水溶液の処理方法
US4654442A (en) 1983-12-30 1987-03-31 Union Oil Company Of California Methods for removing biuret from urea
DE3422175A1 (de) 1984-06-04 1985-12-19 Julius Dr. 8000 München Kern Verfahren zur beimischung von ammoniak zu saure schadstoffe enthaltenden abgasen oder luft
US4552979A (en) 1984-08-27 1985-11-12 James Chemical Engineering Inc. Process for treatment of urea plant process condensate
JPS63198713A (ja) 1987-02-13 1988-08-17 Hino Motors Ltd デイ−ゼルエンジンの窒素酸化物除去方法
JPH0691987B2 (ja) 1987-03-13 1994-11-16 東洋エンジニアリング株式会社 尿素の加水分解方法
JPH02191528A (ja) 1989-01-20 1990-07-27 Babcock Hitachi Kk 固体還元剤を用いた脱硝装置
JPH02268811A (ja) 1989-04-10 1990-11-02 Hitachi Zosen Corp 尿素の加水分解によるアンモニアを用いる脱硝方法
IT1232670B (it) 1989-09-15 1992-03-02 Snam Progetti Procedimento per la purificazione delle acque reflue prodotte dagli impianti di produzione dell'urea.
US5543123A (en) 1990-08-01 1996-08-06 Nalco Fuel Tech Low pressure formation of a urea hydrolysate for nitrogen oxides reduction
US5240688A (en) 1990-08-01 1993-08-31 Fuel Tech Gmbh Process for the in-line hydrolysis of urea
DE4038054A1 (de) 1990-11-29 1992-06-04 Man Technologie Gmbh Verfahren und vorrichtung zur selektiven katalytischen no(pfeil abwaerts)x(pfeil abwaerts)-reduktion in sauerstoffhaltigen abgasen
US5281403B1 (en) 1991-09-27 1996-06-11 Noell Inc Method for converting urea to ammonia
EP0538848A1 (de) 1991-10-23 1993-04-28 Urea Casale S.A. Verfahren und Einrichtung für die Hydrolyse von Restharnstoff im Wasser aus Harnstoff-Syntheseanlagen
US5252308A (en) 1991-12-31 1993-10-12 Union Oil Company Of California Transporting urea for quantitative conversion into ammonia
US5223238A (en) 1992-01-16 1993-06-29 The M. W. Kellogg Company Method for treating ammonia and urea condensates
EP0582022A1 (de) 1992-08-03 1994-02-09 Paul Scherrer Institut Verfahren zum Herstellen von gasförmigem Ammoniak aus Harnstoff
WO1995009810A1 (en) 1993-10-06 1995-04-13 Nalco Fuel Tech Low pressure formation of a urea hydrolysate for nitrogen oxides reduction
JP3638638B2 (ja) 1994-08-24 2005-04-13 バブコック日立株式会社 固体還元剤を用いた脱硝装置
JPH0871372A (ja) 1994-09-07 1996-03-19 Babcock Hitachi Kk 尿素を用いた脱硝装置と方法
US5720926A (en) 1995-11-01 1998-02-24 Environair S.I.P.A. Inc. Apparatus for removing a contaminant from a gas
JP3368371B2 (ja) 1996-05-07 2003-01-20 日立造船株式会社 排煙脱硝装置
US6077491A (en) 1997-03-21 2000-06-20 Ec&C Technologies Methods for the production of ammonia from urea and/or biuret, and uses for NOx and/or particulate matter removal
JPH11171535A (ja) 1997-12-05 1999-06-29 Mitsubishi Heavy Ind Ltd アンモニア発生方法及び排ガス処理方法
ITMI981155A1 (it) 1998-05-25 1999-11-25 Siirtec Nigi S P A Processo per la produzione di ammoniaca mediante idrolisi dell'urea
DE19834980A1 (de) 1998-08-03 1999-12-30 Siemens Ag Mikrowellen-Hydrolyse-Reaktor
US6093380A (en) 1998-10-16 2000-07-25 Siirtec Nigi, S.P.A. Method and apparatus for pollution control in exhaust gas streams from fossil fuel burning facilities
JP4975205B2 (ja) * 2000-04-28 2012-07-11 日揮株式会社 ガス状混合物からのアンモニア回収方法

Also Published As

Publication number Publication date
EP1322553A2 (de) 2003-07-02
WO2002018273B1 (en) 2002-09-12
EP1322553B1 (de) 2005-07-27
ATE300501T1 (de) 2005-08-15
JP5415659B2 (ja) 2014-02-12
US6511644B1 (en) 2003-01-28
AU2001285469A1 (en) 2002-03-13
JP2004507428A (ja) 2004-03-11
DE60112315T2 (de) 2006-05-24
WO2002018273A3 (en) 2002-06-06
WO2002018273A2 (en) 2002-03-07

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