DEP 70.10.80.11-Gen.pdf
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1、MANUAL CLEANING OF EQUIPMENT DEP 70.10.80.11-Gen. January 1998 DESIGN AND ENGINEERING PRACTICE This document is confidential. Neither the whole nor any part of this document may be disclosed to any third party without the prior written consent of Shell International Oil Products B.V. and Shell Inter
2、national Exploration and Production B.V., The Hague, The Netherlands. The copyright of this document is vested in these companies. All rights reserved. Neither the whole nor any part of this document may be reproduced, stored in any retrieval system or transmitted in any form or by any PDF created w
3、ith pdfFactory Pro trial version means (electronic, mechanical, reprographic, recording or otherwise) without the prior written consent of the copyright owners. PDF created with pdfFactory Pro trial version PREFACE DEP (Design and Engineering Practice) publications reflect the views, at the time o
4、f publication, of: Shell International Oil Products B.V. (SIOP) and Shell International Exploration and Production B.V. (SIEP) and Shell International Chemicals B.V. (SIC) The Hague, The Netherlands, and other Service Companies. They are based on the experience acquired during their involvementwith
5、the design, construction, operation and maintenance of processing units and facilities, and they are supplemented with the experience of Group Operating companies. Where appropriate they are based on, or reference is made to, national and international standards and codes of practice. The objective
6、is to set the recommendedstandard for good design and engineeringpractice applied by Group companies operating an oil refinery, gas handling installation, chemical plant, oil and gas production facility, or any other such facility, and thereby to achieve maximum technical and economic benefit from s
7、tandardization. The information set forth in these publications is provided to users for their consideration and decision to implement. This is of particular importance where DEPs may not cover every requirement or diversity of condition at each locality. The system of DEPs is expected to be suffici
8、ently flexible to allow individual operating companies to adapt the information set forth in DEPs to their own environment and requirements. When Contractors or Manufacturers/Suppliers use DEPs they shall be solely responsible for the quality of work and the attainment of the required design and eng
9、ineering standards. In particular, for those requirements not specifically covered, the Principal will expect them to follow those design and engineering practices which will achieve the same level of integrity as reflected in the DEPs. If in doubt, the Contractor or Manufacturer/Supplier shall, wit
10、hout detracting from his own responsibility, consult the Principal or its technical advisor. The right to use DEPs is granted by SIOP, SIEP or SIC, in most cases under Service Agreements primarily with companies of the Royal Dutch/Shell Group and other companies receiving technical advice and servic
11、es from SIOP, SIEP or SIC. Consequently, three categories of users of DEPs can be distinguished: 1)Operating companies having a Service Agreement with SIOP, SIEP, SIC or other Service Company. The use of DEPs by these Operating companies is subject in all respects to the terms and conditions of the
12、relevant Service Agreement. 2)Other parties who are authorized to use DEPs subject to appropriate contractual arrangements. 3)Contractors/subcontractors and Manufacturers/Suppliers under a contract with users referred to under 1) or 2) which requires that tenders for projects, materials supplied or
13、- generally - work performed on behalf of the said users comply with the relevant standards. Subject to any particular terms and conditions as may be set forth in specific agreements with users, SIOP, SIEP and SIC disclaim any liability of whatsoever nature for any damage (including injury or death)
14、 suffered by any company or person whomsoever as a result of or in connection with the use, application or implementation of any DEP, combination of DEPs or any part thereof. The benefit of this disclaimer shall inure in all respects to SIOP, SIEP, SIC and/or any company affiliated to these companie
15、s that may issue DEPs or require the use of DEPs. Without prejudice to any specific terms in respect of confidentiality under relevant contractual arrangements, DEPs shall not, without the prior written consent of SIOP and SIEP, be disclosed by users to any company or person whomsoever and the DEPs
16、shall be used exclusively for the purpose for which they have been provided to the user. They shall be returned after use, including any copies which shall only be made by users with the express prior written consent of SIOP and SIEP. The copyright of DEPs vests in SIOP and SIEP. Users shall arrange
17、 for DEPs to be held in safe custody and SIOP or SIEP may at any time require information satisfactory to them in order to ascertain how users implement this requirement. All administrative queries should be directed to the DEP Administrator in SIOP. NOTE: In addition to DEP publications there are S
18、tandard Specifications and Draft DEPs for Development (DDDs). DDDs generally introduce new procedures or techniques that will probably need updating as further experience develops during their use. The above requirements for distribution and use of DEPs are also applicable to Standard Specifications
19、 and DDDs. Standard Specifications and DDDs will gradually be replaced by DEPs. DEP 70.10.80.11-Gen. January 1998 Page 2 PDF created with pdfFactory Pro trial version TABLE OF CONTENTS 1.INTRODUCTION .5 1.1SCOPE 5 1.2DISTRIBUTION, INTENDED USE AND REGULATORY CONSIDERATIONS5 1.3DEFINITIONS 5 1.4CROS
20、S-REFERENCES 5 2.FOULING 6 2.1INORGANIC DEPOSITS .6 2.2ORGANIC DEPOSITS.6 2.3MIXED INORGANIC/ORGANIC DEPOSITS .6 2.4POLYTHIONIC ACID STRESS CORROSION CRACKING. 7 3.CHEMICAL CLEANING 8 3.1GENERAL8 3.2SURFACTANTS 10 3.3ADVANTAGES AND LIMITATIONS OF CHEMICAL CLEANING 11 3.4CLEANING AGENTS.12 3.5INHIBIT
21、ORS 14 3.6EFFECTS OF CLEANING AGENTS ON CONSTRUCTION MATERIALS 15 3.7METHODS, EQUIPMENT AND FACILITIES FOR CHEMICAL CLEANING18 3.8SAFETY AND ENVIRONMENTAL PROTECTION 20 4.MECHANICAL/PHYSICAL CLEANING 22 4.1CONVENTIONAL METHODS22 4.2STEAM CLEANING .22 4.3SHOT JET CLEANING 22 4.4HIGH-PRESSURE WATER JE
22、T CLEANING 23 4.5INDUCED WAVE TECHNOLOGIES .26 4.6SPONGEJET CLEANING26 5.PRACTICAL CLEANING METHODS27 5.1GENERAL27 5.2CLEANING OF COLUMNS, VESSELS, REACTORS . 27 5.3CLEANING OF SHELL-AND-TUBE HEAT EXCHANGERS 28 5.4CLEANING OF BOILERS 29 5.5CLEANING OF PROCESS FURNACE TUBES.29 5.6CLEANING OF PIPING S
23、YSTEMS .30 6.DESLUDGING OF CRUDE OIL TANKS.33 6.1GENERAL33 6.2METHODS.33 7.DISPOSAL OF EFFLUENTS AND SLUDGE35 8.REFERENCES 36 9.BIBLIOGRAPHY .37 APPENDICES APPENDIX 1PROCEDURE FOR THE CLEANING OF BOILERS ON THE STEAM/WATER SIDE38 APPENDIX 2DETAILED PROCEDURE FOR CLEANING AND NEUTRALISING THE FLUE GA
24、S SIDE OF A BOILER USING AMMONIA . 41 APPENDIX 3EXAMPLES OF CLEANING OF SHELL-AND-TUBE HEAT EXCHANGERS.44 DEP 70.10.80.11-Gen. January 1998 Page 3 PDF created with pdfFactory Pro trial version APPENDIX 4FURNACE TUBE CLEANING.45 APPENDIX 5HIGH-PRESSURE WATER JET DATA47 DEP 70.10.80.11-Gen. January 1
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