JPH01247488A - Antifouling agent and antifoulding method for liquid hydrocarbon heat exchanger - Google Patents
Antifouling agent and antifoulding method for liquid hydrocarbon heat exchangerInfo
- Publication number
- JPH01247488A JPH01247488A JP7465288A JP7465288A JPH01247488A JP H01247488 A JPH01247488 A JP H01247488A JP 7465288 A JP7465288 A JP 7465288A JP 7465288 A JP7465288 A JP 7465288A JP H01247488 A JPH01247488 A JP H01247488A
- Authority
- JP
- Japan
- Prior art keywords
- alkyl
- heat exchanger
- antifouling agent
- weight
- molecular weight
- 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.)
- Granted
Links
- 239000002519 antifouling agent Substances 0.000 title claims abstract description 17
- 239000004215 Carbon black (E152) Substances 0.000 title claims abstract description 8
- 229930195733 hydrocarbon Natural products 0.000 title claims abstract description 8
- 150000002430 hydrocarbons Chemical class 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 title claims description 12
- 239000007788 liquid Substances 0.000 title claims description 3
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 claims abstract description 11
- -1 alkyl methacrylate Chemical compound 0.000 claims abstract description 10
- 125000001183 hydrocarbyl group Chemical group 0.000 claims abstract description 8
- 239000000178 monomer Substances 0.000 claims abstract description 8
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 125000000217 alkyl group Chemical group 0.000 claims description 8
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 6
- KZNICNPSHKQLFF-UHFFFAOYSA-N dihydromaleimide Natural products O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 claims description 6
- 229960002317 succinimide Drugs 0.000 claims description 6
- 229920001281 polyalkylene Polymers 0.000 claims description 5
- 229920000768 polyamine Polymers 0.000 claims description 5
- 239000001384 succinic acid Substances 0.000 claims description 4
- 238000010559 graft polymerization reaction Methods 0.000 claims description 3
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 3
- 239000000110 cooling liquid Substances 0.000 claims 1
- 150000003949 imides Chemical class 0.000 claims 1
- 230000000379 polymerizing effect Effects 0.000 claims 1
- 230000003373 anti-fouling effect Effects 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 3
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 abstract description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- RINCXYDBBGOEEQ-UHFFFAOYSA-N succinic anhydride Chemical compound O=C1CCC(=O)O1 RINCXYDBBGOEEQ-UHFFFAOYSA-N 0.000 abstract 1
- 239000010779 crude oil Substances 0.000 description 20
- 238000012360 testing method Methods 0.000 description 19
- 239000003921 oil Substances 0.000 description 14
- 239000000654 additive Substances 0.000 description 11
- 230000000996 additive effect Effects 0.000 description 11
- 238000004821 distillation Methods 0.000 description 10
- 239000000203 mixture Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 150000002763 monocarboxylic acids Chemical class 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- 238000005504 petroleum refining Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 1
- YVLLFYIFMKAGCT-KHPPLWFESA-N 1-n-[(z)-octadec-9-enyl]propane-1,2-diamine Chemical compound CCCCCCCC\C=C/CCCCCCCCNCC(C)N YVLLFYIFMKAGCT-KHPPLWFESA-N 0.000 description 1
- ZZEKLJMQENPGEU-UHFFFAOYSA-N 1-n-octadecylpropane-1,2-diamine Chemical compound CCCCCCCCCCCCCCCCCCNCC(C)N ZZEKLJMQENPGEU-UHFFFAOYSA-N 0.000 description 1
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 description 1
- KGIGUEBEKRSTEW-UHFFFAOYSA-N 2-vinylpyridine Chemical compound C=CC1=CC=CC=N1 KGIGUEBEKRSTEW-UHFFFAOYSA-N 0.000 description 1
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 description 1
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- 230000010062 adhesion mechanism Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920006112 polar polymer Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は原油または原油のさまざまな春分の処理、およ
び原油からつくられる石油製品の成分を改変する各種の
プロセスから回収された製品および春分の処理において
、高温度の熱伝導部を有する装置における汚れ付着の防
止、すなわち熱伝達装置内面上に沈着および堆積する付
着物を減少させるためのイ５れ防止剤およびこれを用い
る汚れ防止方法に関する。さらに詳細には原油の常圧蒸
留工程において、シェルアンドチューブ型の原油予熱熱
交換器内部に生じる汚れの付着を防止するための添加剤
組成物および汚れ防止方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to various treatments of crude oil or crude oil, and to products recovered from various processes for modifying the composition of petroleum products made from crude oil and equinoxes. The present invention relates to an anti-fouling agent for preventing fouling in a device having a high-temperature heat conduction part, that is, for reducing fouling that deposits and accumulates on the inner surface of a heat transfer device, and a fouling prevention method using the same. More specifically, the present invention relates to an additive composition and a method for preventing dirt from forming inside a shell-and-tube type crude oil preheating heat exchanger in a crude oil atmospheric distillation process.
〔従来の技術）
石油精製工業では各ｆ！！処理工程において、非常に多
くの熱交換器を用いてプロセス流の加熱および冷却を行
っている。例えば常圧蒸留工程においては、原油は加熱
炉入口に到達する間に多くの熱交換器を通って予熱され
る。シェルアンドチューブ型熱交換器では加熱側（シェ
ル側）は常圧蒸留残油が使用される。すなわち加熱源で
ある常圧蒸留残油は冷却され、チューブ内を通る原油は
加熱される。このような処理工程において、熱交換器内
面上に沈着および堆積する付着物、すなわち汚れが問題
となる。この汚れ物質は熱伝達効率の低下、圧力降下の
増大および通油量の損失という重大な障害を引き起こす
。このような障害が生した場合には装置の運転を停止し
、汚れ付着物を除去する作業を定期的に行わなければな
らないが、この清掃作業を頻繁に行うことは経済的に極
めて不利なものである。汚れ物質の付着を防止するため
に、従来より供給原料に薬剤を添加する多くの方法が提
案されている。斯かる薬剤としては、例えばモノカルボ
ン酸とアルキレンポリアミンとのアミド縮合生成物（特
公昭４６−２３５０４号）、アンモニア（特開昭５４−
６９１０６号）、ポリアルキレンアミン（特開昭５５−
１２９４９０号）、ポリオキシアルキレンカルバメート
（特開昭５９−２３２１７０号）などが公知である。し
かし、これらの化合物を原油などの借料原料に添加する
ことによって、ある程度汚れの付着を防止することかで
きるが、まだ十分なものではない。[Conventional technology] In the oil refining industry, each f! ! In processing processes, numerous heat exchangers are used to heat and cool process streams. For example, in an atmospheric distillation process, crude oil is preheated through a number of heat exchangers before reaching the furnace inlet. In shell-and-tube heat exchangers, atmospheric distillation residual oil is used on the heating side (shell side). That is, the atmospheric distillation residual oil, which is a heating source, is cooled, and the crude oil passing through the tube is heated. In such processing steps, deposits or dirt that settles and accumulates on the inner surface of the heat exchanger becomes a problem. This fouling material causes serious problems in terms of reduced heat transfer efficiency, increased pressure drop, and loss of oil flow. If such a problem occurs, the operation of the equipment must be stopped and the dirt deposited must be removed periodically, but it is economically disadvantageous to perform this cleaning work frequently. It is. In order to prevent the adhesion of fouling substances, many methods have been proposed in the past for adding chemicals to the feedstock. Such agents include, for example, amide condensation products of monocarboxylic acids and alkylene polyamines (Japanese Patent Publication No. 46-23504), ammonia (Japanese Patent Publication No. 1983-23504),
No. 69106), polyalkylene amine (JP-A No. 1983-
129490), polyoxyalkylene carbamate (Japanese Unexamined Patent Publication No. 59-232170), and the like are known. However, although it is possible to prevent the adhesion of dirt to some extent by adding these compounds to borrowed raw materials such as crude oil, it is still not sufficient.
従って、本発明は、石油精製工程において、液体炭化水
素熱交換器および各種処理装置の汚れの付着を防止する
高性能な添加剤組成物および汚れ防止方法を提供するこ
とを目的とするものである。さらに詳細には常圧蒸留工
程において、原油の予熱熱交換器内面上に汚れが付着す
るのを防止する高性能な添加剤組成物および汚れ防止方
法を提供することを目的とするものである。Therefore, an object of the present invention is to provide a high-performance additive composition and a method for preventing fouling of liquid hydrocarbon heat exchangers and various processing equipment in petroleum refining processes. . More specifically, it is an object of the present invention to provide a high-performance additive composition and a method for preventing dirt from adhering to the inner surface of a crude oil preheating heat exchanger during an atmospheric distillation process.
斯かる実状に鑑み、本発明者は、汚れ物質の分析と汚れ
付着機構について鋭意研究を行った結果、上記目的にか
なった汚れ防止用添加剤を見出し、本発明を完成した。In view of this situation, the present inventor conducted intensive research on the analysis of soiling substances and the soil adhesion mechanism, and as a result, discovered a soiling prevention additive that met the above objectives, and completed the present invention.
すなわち、本発明は、次の成分 （Ａ）及び（Ｂ）、
（Ａ）炭化水素基部分の分子量が３００〜５，０００の
アルキルまたはアルケニルコハク酸イミド、（Ｂ）４Ｍ
性モノマーをグラフト重合させて得られる重量平均分子
量５０，０００〜５００，０００のポリアルキルメタク
リレート、
を１：９〜９．１の重量割合で含有することを特徴とす
る液体炭化水素熱交換器用汚れ防止剤、並びにこれを使
用する汚れ防止方法を提供するものである。That is, the present invention provides the following components (A) and (B), (A) an alkyl or alkenyl succinimide whose hydrocarbon group has a molecular weight of 300 to 5,000, and (B) a 4M
a polyalkyl methacrylate having a weight average molecular weight of 50,000 to 500,000 obtained by graft polymerization of a polyhydric monomer in a weight ratio of 1:9 to 9.1. The present invention provides an inhibitor and a stain prevention method using the same.
本発明汚れ防止剤の （Ａ）成分のアルキルまたはアル
ケニルコハク酸イミドは、アルキルまたはアルケニル置
換コハク酸あるいはその無水物と、窒素原子を２〜６個
有するポリアルキレンポリアミンとの縮合反応によって
得られる。アルキルまたはアルケニル置換コハク酸の炭
化水素基部分の分子量は３００〜５，０００ 、特に６
００〜３．０００が好ましい。分子量が大きすぎても、
小さすぎてもアルキルまたはアルケニルコハク酸イミド
の油溶解性が悪くなり、十分な油中分散性を示すことが
できず好ましくない。窒素原子を２〜６個有するポリア
ルキレンポリアミンとしては、エチレンジアミン、ジエ
チレントリアミン、トリエチレンテトラミン、テトラエ
チレンペンタミン、ペンタエチレンへキサジン、Ｎ−オ
クタデジルプロピレンジアミン、Ｎ−オレイルプロピレ
ンジアミン、Ｎ−オクタデシルジプロピレントリアミン
、Ｎ−オレイルトリプロピレンテトラミンなどを例示す
ることができる。The alkyl or alkenyl succinimide as component (A) of the antifouling agent of the present invention is obtained by a condensation reaction between an alkyl or alkenyl substituted succinic acid or its anhydride and a polyalkylene polyamine having 2 to 6 nitrogen atoms. The molecular weight of the hydrocarbon moiety of the alkyl- or alkenyl-substituted succinic acid is 300 to 5,000, especially 6
00 to 3.000 is preferable. Even if the molecular weight is too large,
If it is too small, the oil solubility of the alkyl or alkenyl succinimide will deteriorate, and sufficient dispersibility in oil will not be exhibited, which is not preferable. Examples of polyalkylene polyamines having 2 to 6 nitrogen atoms include ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexazine, N-octadecylpropylenediamine, N-oleylpropylenediamine, and N-octadecyldipropylene. Examples include triamine, N-oleyltripropylenetetramine, and the like.
また、 ＣＢ）成分のポリアルキルメタクリレートは、
炭素数１０〜１８個を有する脂肪族−価アルコールとメ
タクリル酸を反応させて得られるアルキルメタクリレー
トモノマーと極性子ツマ−をグラフト共重合させること
により製造される。好ましい極性子ツマ−としてはビニ
ルピロリドン、ビニルピリジン、ジエチルアミノエヂル
メタクリレートなどを例示できるが、ビニルピロリドン
が特に好ましい。ポリアルキルメタクリレート中の極性
子ツマ−の割合は１〜１０重量％が好ましく、特に３〜
７重量％が好ましい。極性モノマーの割合が多すぎても
、少なすぎても十分な油中分散性を示すことができず好
ましくない。またこのポリアルキルメタクリレートの重
量平均分子量は５０，０００〜５（１０，０００、特に
１５１１．０００〜３００，０００が好ましい。平均分
子量が小さすきると立体障害効果による分散性能が悪く
なり、大きすぎると粘度が高くなり、また油溶解性が悪
くなって好ましくない。In addition, the polyalkyl methacrylate of component CB) is
It is produced by graft copolymerizing an alkyl methacrylate monomer obtained by reacting an aliphatic alcohol having 10 to 18 carbon atoms with methacrylic acid and a polar polymer. Preferred polar molecules include vinylpyrrolidone, vinylpyridine, diethylaminoedyl methacrylate and the like, with vinylpyrrolidone being particularly preferred. The proportion of polar particles in the polyalkyl methacrylate is preferably 1 to 10% by weight, particularly 3 to 10% by weight.
7% by weight is preferred. If the proportion of the polar monomer is too high or too low, sufficient dispersibility in oil cannot be exhibited, which is undesirable. The weight average molecular weight of this polyalkyl methacrylate is preferably 50,000 to 5 (10,000, particularly 1,511,000 to 300,000. If the average molecular weight is too small, the dispersion performance will deteriorate due to steric hindrance effect, and if it is too large, the dispersion performance will deteriorate due to steric hindrance effect. It is undesirable because the viscosity becomes high and the oil solubility becomes poor.
（Ａ）成分と （Ｂ）成分の混合割合は、処理する原油
や石油製品の種類によっても異なるが、重量割合で１・
９〜９：１特に３ニア〜７：３が好ましい。The mixing ratio of component (A) and component (B) varies depending on the type of crude oil and petroleum products to be processed, but the weight ratio is 1.
9 to 9:1, particularly 3-near to 7:3 is preferred.
本発明の汚れ防止剤を用いて汚れを防止するには、例え
ば、汚れ防止剤を有機溶剤に溶解し、取り扱いやすい粘
度としておき、連続的に炭化水素流に５〜２００ ＰＰ
Ｍの割合で注入するのが好ましい。添加濃度が少なすぎ
ると汚れ防止効果が発揮されず、逆に多すぎると添加剤
の分解生成物による悪影響や経済的にみても不都合が生
じることになるため、特に１０〜５０ＰＰＭの添加が好
ましい。原油の常圧蒸留工程を例にとると、添加場所は
原油側、残油側の何れでもよいが、原油側に添加する場
合には脱塩槽出口で注入するのが好ましく、残油側に添
加する場合には蒸留塔残抽出ロボンブのサクション側に
注入するのが好ましい。To prevent staining using the antifouling agent of the present invention, for example, the antifouling agent may be dissolved in an organic solvent to a manageable viscosity and continuously added to a hydrocarbon stream at 5 to 200 PP.
It is preferable to inject at a ratio of M. If the additive concentration is too low, the antifouling effect will not be exhibited, whereas if the additive concentration is too high, the decomposition products of the additive will have an adverse effect and cause economical disadvantages, so it is particularly preferable to add 10 to 50 PPM. Taking the crude oil atmospheric distillation process as an example, the addition location can be either the crude oil side or the residual oil side, but when adding to the crude oil side, it is preferable to inject it at the desalination tank outlet; When added, it is preferably injected into the suction side of the distillation column residue extraction bomb.
〔作 用］
本発明における （Ａ）および （Ｂ）成分の組合せに
よる汚れ防止は、汚れ物質の分散、表面状態の変化によ
る凝集の防止、及び熱交換器内表面の保護等の複合効果
によって達成されるものと考えられる。[Function] In the present invention, the prevention of fouling by the combination of components (A) and (B) is achieved by the combined effect of dispersing fouling substances, preventing agglomeration due to changes in the surface condition, and protecting the inner surface of the heat exchanger. It is considered that
〔実施例）
次に実施例により本発明をさらに具体的に説明するが、
本発明はこれらの実施例によって限定されるものではな
い。[Example] Next, the present invention will be explained in more detail with reference to Examples.
The present invention is not limited to these examples.
実施例１
汚れ防止剤の汚れ防止性能試験は、アルコア試験装置を
使用して行った。この試験の原理は次の通りである。一
定の入口温度に電気的に加熱されるテストチューブを含
む管中に試験油を一定流速で供給し、出口温度を一定に
保つように十分な熱をテストチューブに供給する。テス
トチューブ上に汚れが析出すると、熱伝導性が悪くなり
試験油の出口温度を一定に保つためにはテストチューブ
の温度を上昇させなければならない。最初のテストチュ
ーブの温度と試験１ツ終時までの温度変化、およびテス
トチューブの試験前後での重量変化を測定する。この温
度上昇（ΔＴ）およびテストチューブ上の析出物の量が
汚れの程度を示している。試験時間は７時間とした。Example 1 Antifouling performance testing of antifouling agents was conducted using an Alcoa test apparatus. The principle of this test is as follows. Test oil is fed at a constant flow rate into a tube containing a test tube that is electrically heated to a constant inlet temperature, and sufficient heat is supplied to the test tube to maintain a constant outlet temperature. When dirt is deposited on the test tube, thermal conductivity deteriorates, and in order to keep the test oil outlet temperature constant, the temperature of the test tube must be increased. Measure the initial temperature of the test tube, the temperature change until the end of the test, and the weight change of the test tube before and after the test. This temperature rise (ΔT) and the amount of precipitate on the test tube indicate the degree of contamination. The test time was 7 hours.
試験油は中東系重質原油と中東系重質常圧残油を重二比
１：１の割合で混合したものを使用した。The test oil used was a mixture of Middle Eastern heavy crude oil and Middle Eastern heavy atmospheric residual oil at a ratio of 1:1.
実施例および比較例の試験に用いた汚れ防止剤は次の通
りである。The antifouling agents used in the tests of Examples and Comparative Examples are as follows.
添加剤Ａ：アルケニルコハク酸イミド（炭化水素基部分
の分子量 １，５００）
添加剤Ｂ：ポリアルキルメタクリレート（ビニルピロリ
ドン６重量％含有）
添加剤Ｃ：モノカルボン酸とポリアルキレンポリアミン
の縮合アミド生成物
添加剤Ｄ・市販品（ポリアルキルメタクリレ−ト系）
表−１に汚れ防止剤および混合割合、添加量、テストチ
ューブの温度上昇（６丁）および汚れ付着による重量増
加分を示した。この結果より本発明の汚れ防止剤は、低
添加量でテストチューブの温度上昇および汚れの付着に
よる重量増加分が小さく、汚れ防止性能が優れていた。Additive A: Alkenyl succinimide (molecular weight of the hydrocarbon group moiety: 1,500) Additive B: Polyalkyl methacrylate (contains 6% by weight of vinylpyrrolidone) Additive C: Condensation amide product of monocarboxylic acid and polyalkylene polyamine Additive D/Commercial product (polyalkyl methacrylate type) Table 1 shows the antifouling agent, mixing ratio, amount added, temperature rise in test tubes (6 tubes), and weight increase due to fouling. The results show that the antifouling agent of the present invention had excellent antifouling performance, with a small increase in temperature of the test tube and a small increase in weight due to adhesion of dirt when added in a low amount.
表−１
実施例２
実施例１に示した汚れ防止剤（表−１のＡ／Ｂ＝５１５
）を原油の常圧蒸留装置の常圧蒸留残油の流れに２５Ｐ
ＰＭ、４力月間常時添加し、熱交換器を通過する原油の
熱交換器出口温度を測定した。４力月通泊後同−原油に
ついて比較した結果は表−２の通りであった。汚れ防止
剤の添加により、熱交換器の熱交換効率が高まり、原油
の熱交換器出口温度は添加しない場合に比べ１．２℃高
まった。これにより原油の熱交換器出口温度の低下傾向
が約１５％改善された。Table 1 Example 2 Antifouling agent shown in Example 1 (A/B in Table 1 = 515
) to the atmospheric distillation residual oil stream of the crude oil atmospheric distillation unit.
PM was constantly added for 4 months, and the temperature of the crude oil passing through the heat exchanger at the outlet of the heat exchanger was measured. Table 2 shows the results of a comparison of the same crude oil after the April 4th visit. The addition of the antifouling agent increased the heat exchange efficiency of the heat exchanger, and the crude oil heat exchanger outlet temperature increased by 1.2°C compared to the case without the addition. As a result, the tendency of the crude oil heat exchanger outlet temperature to decrease was improved by about 15%.
表−２
（発明の効果）
本発明によれば、石油精製工業の各種処理工程において
、熱交換器内面上に沈着および堆積する付着物の量を著
しく低減することができる。特に常圧蒸留工程に用いら
れると、原油予熱熱交換器への汚れの付着が著しく低減
され、汚れ付着物の除去作業の顕度を少なくすることが
できるとともに、加熱炉人口の温度低下を防止し、燃料
消費量を著しく節減することができる。本発明の汚れ防
止剤を添加して精製された重油は、燃焼機器に使用され
る際の熱交換器やパイプの汚れをも低減し得る。Table 2 (Effects of the Invention) According to the present invention, it is possible to significantly reduce the amount of deposits deposited and deposited on the inner surface of a heat exchanger in various treatment steps in the petroleum refining industry. In particular, when used in the atmospheric distillation process, the adhesion of dirt to the crude oil preheating heat exchanger is significantly reduced, making it possible to reduce the degree of contamination removal work and prevent the temperature of the heating furnace from dropping. This can significantly reduce fuel consumption. Heavy oil refined by adding the antifouling agent of the present invention can also reduce fouling of heat exchangers and pipes when used in combustion equipment.
以 上that's all
Claims (1)
アルキルまたはアルケニルコハク酸イミド、（Ｂ）極性
モノマーをグラフト重合させて得られる重量平均分子量
５０，０００〜５００，０００のポリアルキルメタクリ
レート、 を１：９〜９：１の重量割合で含有することを特徴とす
る液体炭化水素熱交換器用汚れ防止剤。 ２、アルキルまたはアルケニルコハク酸イミドが、炭化
水素基部分の分子量が３００〜５，０００のアルキルま
たはアルケニルコハク酸と、窒素原子を２〜６個有する
ポリアルキレンポリアミンとの反応によって得られるも
のであることを特徴とする請求項１記載の汚れ防止剤。 ３、ポリアルキルメタクリレートが、極性モノマーとし
てビニルピロリドンを１〜１０重量％グラフト重合させ
たものであることを特徴とする請求項１記載の汚れ防止
剤。 ４、液体炭化水素を熱交換器に通し加熱または冷却を行
うに際し、次の成分（Ａ）及び（Ｂ）、（Ａ）炭化水素
基部分の分子量が３００〜５，０００のアルキルまたは
アルケニルコハク酸イミド、（Ｂ）極性モノマーをグラ
フト重合させて得られる重量平均分子量５０，０００〜
５００，０００のポリアルキルメタクリレート、 を１：９〜９：１の重量割合で含有する汚れ防止剤を添
加することを特徴とする汚れ防止方法。[Claims] 1. Graft polymerization of the following components (A) and (B), (A) an alkyl or alkenyl succinimide whose hydrocarbon group has a molecular weight of 300 to 5,000, and (B) a polar monomer. An antifouling agent for a liquid hydrocarbon heat exchanger, characterized in that it contains a polyalkyl methacrylate having a weight average molecular weight of 50,000 to 500,000 obtained by the above method in a weight ratio of 1:9 to 9:1. 2. The alkyl or alkenyl succinimide is obtained by reacting an alkyl or alkenyl succinic acid whose hydrocarbon group has a molecular weight of 300 to 5,000 with a polyalkylene polyamine having 2 to 6 nitrogen atoms. The antifouling agent according to claim 1, characterized in that: 3. The antifouling agent according to claim 1, wherein the polyalkyl methacrylate is obtained by graft polymerizing 1 to 10% by weight of vinylpyrrolidone as a polar monomer. 4. When heating or cooling liquid hydrocarbon through a heat exchanger, the following components (A) and (B), (A) an alkyl or alkenyl succinic acid whose hydrocarbon group has a molecular weight of 300 to 5,000; Imide, weight average molecular weight obtained by graft polymerization of (B) polar monomer: 50,000~
500,000 polyalkyl methacrylate in a weight ratio of 1:9 to 9:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7465288A JPH01247488A (en) | 1988-03-30 | 1988-03-30 | Antifouling agent and antifoulding method for liquid hydrocarbon heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7465288A JPH01247488A (en) | 1988-03-30 | 1988-03-30 | Antifouling agent and antifoulding method for liquid hydrocarbon heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01247488A true JPH01247488A (en) | 1989-10-03 |
| JPH055874B2 JPH055874B2 (en) | 1993-01-25 |
Family
ID=13553373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7465288A Granted JPH01247488A (en) | 1988-03-30 | 1988-03-30 | Antifouling agent and antifoulding method for liquid hydrocarbon heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01247488A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0662504A1 (en) * | 1994-01-10 | 1995-07-12 | Nalco Chemical Company | Corrosion inhibition and iron sulfide dispersing in refineries using the reaction product of a hydrocarbyl succinic anhydride and an amine |
| JP2007106926A (en) * | 2005-10-14 | 2007-04-26 | Hakuto Co Ltd | Stain adhesion-preventing agent for petroleum refining and method of preventing stain of petroleum-refining plant |
| WO2021152718A1 (en) * | 2020-01-29 | 2021-08-05 | 株式会社片山化学工業研究所 | Method for preventing fouling of heat exchanger in petroleum processing |
| WO2022004434A1 (en) * | 2020-07-01 | 2022-01-06 | 株式会社片山化学工業研究所 | Method for preventing fouling of heat exchanger in petroleum process |
-
1988
- 1988-03-30 JP JP7465288A patent/JPH01247488A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0662504A1 (en) * | 1994-01-10 | 1995-07-12 | Nalco Chemical Company | Corrosion inhibition and iron sulfide dispersing in refineries using the reaction product of a hydrocarbyl succinic anhydride and an amine |
| JP2007106926A (en) * | 2005-10-14 | 2007-04-26 | Hakuto Co Ltd | Stain adhesion-preventing agent for petroleum refining and method of preventing stain of petroleum-refining plant |
| WO2021152718A1 (en) * | 2020-01-29 | 2021-08-05 | 株式会社片山化学工業研究所 | Method for preventing fouling of heat exchanger in petroleum processing |
| WO2022004434A1 (en) * | 2020-07-01 | 2022-01-06 | 株式会社片山化学工業研究所 | Method for preventing fouling of heat exchanger in petroleum process |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH055874B2 (en) | 1993-01-25 |
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