CN100494135C - Methyl heptol desulfurizing process - Google Patents
Methyl heptol desulfurizing process Download PDFInfo
- Publication number
- CN100494135C CN100494135C CNB2005101366726A CN200510136672A CN100494135C CN 100494135 C CN100494135 C CN 100494135C CN B2005101366726 A CNB2005101366726 A CN B2005101366726A CN 200510136672 A CN200510136672 A CN 200510136672A CN 100494135 C CN100494135 C CN 100494135C
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- Prior art keywords
- heptol
- methyl
- enanthol
- sulfide
- desulfurizing
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Abstract
The present invention relates to chemical technology, and is especially methyl heptol desulfurizing process. At normal temperature and normal pressure, methyl heptol is countercurrent input into a desulfurizing tower filled with SN-3 type active carbon to eliminate sulfide and to reach the sulfide content below 2 ppm. The process can provide the subsequent step with high purity material to reduce catalyst poisoning, raise product yield and raise production efficiency.
Description
Technical field:
The invention belongs to the method for a kind of methyl heptol desulfurizing of chemical field.
Background technology:
The method for preparing N.N-two-(1-methylheptyl) ethanamide is the by product first enanthol with sebacic acid ricinolic acid cracking workshop section
Be raw material, after simple distillation is anhydrated, come to lead under the nickel catalyzator catalysis hydrogen ammonia Ruan and separate into two-(1-methylheptyl) amine, carry out acetylization reaction with diacetyl oxide then, make product N.N-two-(1-methylheptyl) ethanamide through distillation.
Concrete chemical equation is as follows:
Because sebacic acid manufacturer uses the cresols or the creosote of sulfur compound (mercaptan, thioether etc.) to make the cracking reaction thinner, sulfide is except that with the resultant first enanthol effusion cracking still in the cracking reaction, remain in the first enanthol through cooling, sulfide content is 25-50PPm.Because the existence of sulfide in the first enanthol causes Ruan that ammonolysis reaction uses in preparation N.N-two-(1-methylheptyl) ethanamide process to come nickel catalyzator to poison, productive rate is low, the production cost height, and quality product does not reach standard, even can't prepare.
Summary of the invention:
The objective of the invention is to remove the sulfide in the raw material first enanthol, its content is reduced significantly, for subsequent production creates conditions smoothly.
The present invention increases the methyl heptol desulfurizing operation in preparation N.N-two-(1-methylheptyl) ethanamide technical process, at normal temperatures and pressures, the interior desulfurization of thionizer of SN-3 type activated carbon desulphurization agent is equipped with in the input of first enanthol, and the first enanthol sulfide content after desulfurization is lower than 2PPm.
The present invention reduces the sulfide in the raw material first enanthol, avoids the poisoning of catalyst of subsequent reactions, and the product yield significantly improves, and reduces production costs greatly, guarantees to produce normal operation.
Description of drawings:
Accompanying drawing 1 is seen in technical process of the present invention.
Embodiment:
As shown in Figure 1; the methyl heptol desulfurizing major equipment removes sulfide tower 1 for design voluntarily; it is a cylinder shape; two ends are round platform; 5～9 meters high; be built-in with 3.5～6 meters high SN-3 type activated carbon desulphurization agent layer 2 (Shanghai Chemical Research Inst's production); first enanthol after distillation dewaters is delivered to high-order basin with pump 3; first enanthol in the high-order basin is gone in the tower from tower bottom flow; behind the sweetening agent layer; it is standby to separate workshop section's first enanthol basin from the cat head upflow tube by valve 4 inflow ammonia, and the control rate of discharge makes first enanthol sulfur compound get final product less than 2PPm.
Methyl heptol desulfurizing and do not remove sulfide ammonolysis reaction synopsis (60 days mean number)
Methyl heptol desulfurizing participates in ammonolysis reaction first enanthol and does not remove sulfide participation ammonolysis reaction
(sulfide content 1PPm) (sulfide content 45PPm)
Every batch is dropped into first enanthol still 320kg 320kg
Every batch is dropped into Ruan and comes nickel catalyzator amount 50kg 50kg
Product yield 45% 82%
Quality product is defective qualified
The poisoning of catalyst operation in 5 days of poisoning situation is normal
Claims (1)
1, a kind of method of methyl heptol desulfurizing is characterized in that: at normal temperatures and pressures, the interior desulfurization of thionizer of SN-3 type activated carbon desulphurization agent is equipped with in the input of first enanthol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101366726A CN100494135C (en) | 2005-12-29 | 2005-12-29 | Methyl heptol desulfurizing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101366726A CN100494135C (en) | 2005-12-29 | 2005-12-29 | Methyl heptol desulfurizing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1810748A CN1810748A (en) | 2006-08-02 |
| CN100494135C true CN100494135C (en) | 2009-06-03 |
Family
ID=36843890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101366726A Expired - Fee Related CN100494135C (en) | 2005-12-29 | 2005-12-29 | Methyl heptol desulfurizing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100494135C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104437366A (en) * | 2014-11-13 | 2015-03-25 | 安徽凤凰滤清器股份有限公司 | Uneasily-disintegrated mixed active carbon desulfurizing agent and preparation method thereof |
| FR3029913B1 (en) * | 2014-12-16 | 2018-07-06 | Arkema France | 2-OCTANONE CUTTING PROCESS |
-
2005
- 2005-12-29 CN CNB2005101366726A patent/CN100494135C/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| S系列脱硫产品的特点及其应用. 吕正平等.小氮肥，第8期. 2000 |
| S系列脱硫产品的特点及其应用. 吕正平等.小氮肥，第8期. 2000 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1810748A (en) | 2006-08-02 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20191229 |
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| CF01 | Termination of patent right due to non-payment of annual fee |